WO2012075968A1 - Method, system and device for acquiring parameter set value of video code stream in transcoding service - Google Patents
Method, system and device for acquiring parameter set value of video code stream in transcoding service Download PDFInfo
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- WO2012075968A1 WO2012075968A1 PCT/CN2011/083825 CN2011083825W WO2012075968A1 WO 2012075968 A1 WO2012075968 A1 WO 2012075968A1 CN 2011083825 W CN2011083825 W CN 2011083825W WO 2012075968 A1 WO2012075968 A1 WO 2012075968A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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- FIG. 6 is a schematic diagram of a process of obtaining a parameter set value in a transcoding service and returning a target code stream to a receiving end by using an RTSP as an example according to an embodiment of the present invention.
- S504 determining whether the corresponding information in the SDP information of the video code stream returned by the source end is the same as the coding format information and the video parameter information of the target code stream to be received by the receiving end, and when the judgment is the same, performing S506, otherwise, proceed to S505.
Abstract
A method, system and device for acquiring a parameter set value of a video code stream in a transcoding service are disclosed, so as to solve the problem in the prior art that, incapable of acquiring the parameter set value of a video code stream, a receiving end in a transcoding service has an error in decoding the video code stream and fails to play same. In the method, when video parameter information and encoding format information in a code stream request sent from a receiving end is acquired through parsing, and it is judged that corresponding information in code stream description information in a video code stream to be sent by a source end is different from the above information, the parameter set value corresponding to the video parameter information and the encoding format information is determined, and the determined parameter set value is sent to the receiving end. In the embodiment of the present invention, a code stream conversion device determines corresponding parameter set information thereof according to video parameter information and encoding format information of a target code stream required by the receiving end, and provides the corresponding parameter set information to the receiving end, so that the receiving end may decode the received video code stream according to the parameter set value, thereby increasing the success rate of video code stream decoding.
Description
转码业务中获取视频码流的参数集值的方法、 系统及装置 技术领域 Method, system and device for obtaining parameter set value of video code stream in transcoding service
本发明涉及通信技术领域， 尤其涉及一种转码业务中获取视频码流的 参数集值的方法、 系统及装置。 背景技术 The present invention relates to the field of communications technologies, and in particular, to a method, system, and apparatus for obtaining a parameter set value of a video code stream in a transcoding service. Background technique
H.264视频编码标准中使用了参数集的概念， 参数集包括： 顺序参数集 ( Sequence Parameter Set, SPS )和图像参数集 ( Picture Parameter Set, PPS )。 其中 SPS和 PPS中包括如图像大小、 采用的可选的编码模式、 宏块到片段 组映射等信息。 一个活动 SPS在一个编码视频序列中保持不变， 一个活动 SPS在一个编码图像中保持不变。 这两个参数集的值， 是在会话建立的初 始阶段， 作为码流描述信息会话描述协议 ( Session Description Protocol, SDP )中媒体描述的一个属性值， 由媒体的源端发送给媒体的接收端， 使媒 体的接收端能够根据 SDP信息正常解析后续接收到的码流。 The concept of parameter sets is used in the H.264 video coding standard. The parameter set includes: Sequence Parameter Set (SPS) and Picture Parameter Set (PSS). Among them, SPS and PPS include information such as image size, optional coding mode, macroblock to segment group mapping. An active SPS remains unchanged in an encoded video sequence, and an active SPS remains unchanged in an encoded image. The values of the two parameter sets are in the initial stage of session establishment, and are an attribute value of the media description in the Session Description Protocol (SDP), which is sent by the source end of the media to the receiving end of the media. The receiving end of the media can normally parse the subsequently received code stream according to the SDP information.
一般情况下， SDP信息中携带的参数集的值， 需要源端通过读取已编 码的码流的信息的方式获取， 这种方法对于预先编码、 之后当源端和接收 端建立了会话并进行 SDP信息交互的情况比较适用。 但是涉及码流的转码 业务时， 由于源端与接收端对码流的码率、 分辨率等视频参数的要求是不 同的， 源端发送过来的码流， 需要经过码流转换装置的转换， 从而得到接 收端所需的目标码流， 因此在该过程中将无法获取到参数集值。 In general, the value of the parameter set carried in the SDP information needs to be obtained by the source end by reading the information of the encoded code stream. This method is used for pre-coding, and then the source and the receiving end establish a session and perform the session. The situation of SDP information interaction is more applicable. However, when the transcoding service of the code stream is involved, since the requirements of the video parameters such as the code rate and the resolution of the code stream at the source end and the receiving end are different, the code stream sent from the source end needs to be converted by the code stream conversion device. Therefore, the target code stream required by the receiving end is obtained, so the parameter set value cannot be obtained in the process.
例如， 在移动视频监控业务中， 虽然移动网络已经实现了第三代（3rd Generation, 3G )通信技术 /第四代 ( 4th Generation, 4G )通信技术等新一 代的移动网络技术， 但是其带宽相对固网而言还是比较低的， 对于在固网 中比较容易实现的 512Kbps、 通用中间格式（ Common Intermedia Format,
CIF )的视频码流， 在移动网络中还是无法接受的， 只能通过减低码流、 分 辨率等方式对码流进行转码后再发送到移动网络中。 For example, in the mobile video surveillance service, although the mobile network has implemented a new generation of mobile network technologies such as 3rd Generation (3G) communication technology/4th Generation (4G) communication technology, its bandwidth is relatively Fixed network is still relatively low, for the 512Kbps, common intermediate format (Common Intermedia Format, which is relatively easy to implement in the fixed network). The CIF video stream is still unacceptable in the mobile network. The code stream can only be transcoded by reducing the stream, resolution, etc. and then sent to the mobile network.
图 1 为现有技术中转码业务中获取视频码流的实现过程， 该过程包括 以下步驟： FIG. 1 is a process for obtaining a video code stream in a transcoding service in the prior art, and the process includes the following steps:
S101 : 接收端向码流转换装置发送码流请求， 其中该码流请求中携带 其待接收的目标码流的视频参数信息。 S101: The receiving end sends a code stream request to the code stream converting apparatus, where the code stream request carries video parameter information of the target code stream to be received.
S102: 码流转换装置接收到该码流请求后， 向源端请求输入码流。 S102: After receiving the code stream request, the code stream converting apparatus requests an input code stream from the source end.
S103: 根据接收到的接收端发送的视频参数信息， 将输入码流进行转 换， 得到满足接收端要求的目标码流， 将转换后的目标码流发送到接收端。 S103: Convert the input code stream according to the received video parameter information sent by the receiving end, obtain a target code stream that meets the requirements of the receiving end, and send the converted target code stream to the receiving end.
S104: 接收端根据接收到的目标码流的参数信息初始化自身的解码器。 由上述过程可以看到， 接收终端在与码流转换装置进行交互时， 即在 获取码流转换装置发送的视频码流之前， 就应该获取发送给自身的视频码 流的参数集值， 以便对自身的解码器初始化， 但是实际上由于码流转换装 置对获取的视频码流进行了转码， 该码流的参数或者编码的格式已经发生 了变化， 即该源端提供的码流的参数集的值已经发生了变化， 因此此时码 流转换装置无法获取发送给接收端的目标码流的参数集值， 从而可能导致 接收端对接收到的目标码流进行解码播放时出现误差， 甚至导致接收端无 法对接收到的目标码流进行解码播放。 发明内容 S104: The receiving end initializes its own decoder according to the parameter information of the received target code stream. It can be seen from the above process that when the receiving terminal interacts with the code stream converting device, that is, before acquiring the video code stream sent by the code stream converting device, the parameter set value of the video bit stream sent to itself should be obtained, so as to The decoder of the own is initialized, but in fact, since the code stream conversion device transcodes the obtained video code stream, the parameter or the format of the code stream has changed, that is, the parameter set of the code stream provided by the source end. The value has changed. Therefore, the code stream conversion device cannot obtain the parameter set value of the target code stream sent to the receiving end, which may cause errors in the decoding and playback of the received target code stream by the receiving end, and even cause reception. The terminal cannot decode and play the received target stream. Summary of the invention
有鉴于此， 本发明实施例提供一种转码业务中获取视频码流的参数集 值的方法、 系统及装置， 用以解决现有转码业务中接收端无法获取视频码 流的参数集值， 导致对视频码流解码误差， 无法播放的问题。 In view of the above, the embodiments of the present invention provide a method, a system, and a device for acquiring a parameter set value of a video code stream in a transcoding service, which are used to solve a parameter set value in which a receiving end cannot obtain a video code stream in an existing transcoding service. , causing a problem of decoding errors in the video stream and being unable to play.
本发明实施例提供的一种转码业务中获取视频码流的参数集值的方 法， 包括： The method for obtaining the parameter set value of the video code stream in the transcoding service provided by the embodiment of the present invention includes:
码流转换装置解析获得接收端发送的该码流请求中携带的视频参数信
息及编码格式信息； The code stream conversion device parses and obtains the video parameter letter carried in the code stream request sent by the receiving end Information and coding format information;
根据获取的源端发送的待发送的视频码流的码流描述信息， 判断解析 获得视频参数信息及编码格式信息是否与该码流描述信息中的对应信息相 同； And determining, according to the obtained code stream description information of the video code stream to be sent sent by the source end, whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information;
当确定不相同时， 确定该解析获得的视频参数信息及编码格式信息对 应的参数集值； When the determination is not the same, determining the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing;
将确定的所述参数集值发送到接收端， 完成与所述接收端的会话交互 本发明实施例提供的一种转码业务中获取视频码流的参数集值的系统， 包 括： And sending the determined parameter set value to the receiving end, and completing the session interaction with the receiving end. The system for obtaining the parameter set value of the video code stream in a transcoding service provided by the embodiment of the present invention includes:
接收端， 用于发送码流请求， 其中该码流请求中携带视频参数信息及 编码格式信息， 并接收码流转换装置发送的参数集值； The receiving end is configured to send a code stream request, where the code stream request carries video parameter information and encoding format information, and receives a parameter set value sent by the code stream converting device;
码流转换装置， 用于接收接收端发送的码流请求， 解析获取该码流请 求中携带的视频参数信息及编码格式信息， 根据获取的源端发送的待发送 的视频码流的码流描述信息， 判断解析获得视频参数信息及编码格式信息 是否与该码流描述信息中的对应信息相同， 当确定不相同时， 确定该解析 获得的视频参数信息及编码格式信息对应的参数集值， 将确定的所述参数 集值发送到接收端， 完成与所述接收端的会话交互； The code stream conversion device is configured to receive a code stream request sent by the receiving end, parse and obtain the video parameter information and the encoding format information carried in the code stream request, and describe the code stream of the video code stream to be sent sent by the source end according to the obtained source stream Determining whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information. When the determination is not the same, determining the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing, The determined parameter set value is sent to the receiving end, and the session interaction with the receiving end is completed;
源端， 用于向码流转换装置发送待发送的视频码流的码流描述信息。 本发明实施例提供的一种转码业务中获取参数视频码流的集值的装 置， 包括： The source end is configured to send code stream description information of the video code stream to be sent to the code stream converting apparatus. The device for obtaining the set value of the parameter video code stream in the transcoding service provided by the embodiment of the present invention includes:
接收解析模块， 用于接收接收端发送的码流请求， 解析获得该码流请 求中携带的视频参数信息及编码格式信息； a receiving parsing module, configured to receive a code stream request sent by the receiving end, and parse and obtain video parameter information and encoding format information carried in the code stream request;
判断模块， 用于根据获取的源端发送的待发送的视频码流的码流描述 信息， 判断解析获得视频参数信息及编码格式信息是否与该码流描述信息 中的对应信息相同；
参数集生成模块， 用于当判断模块判断不相同时， 确定该解析获得的 视频参数信息及编码格式信息对应的参数集值； a determining module, configured to determine, according to the obtained code stream description information of the video code stream to be sent sent by the source end, whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information; a parameter set generating module, configured to: when the determining module determines that the determination is different, determining a parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing;
发送模块， 用于将确定的所述参数集值发送到接收端， 完成与所述接 收端的会话交互。 And a sending module, configured to send the determined parameter set value to the receiving end to complete a session interaction with the receiving end.
本发明实施例提供了一种转码业务中获取视频码流的参数集值的方 法、 系统及装置， 该方案中当码流转换装置获取了接收端发送的码流请求 后， 解析获取该码流请求中对应的视频参数信息及编码格式信息， 并在判 断源端待发送的视频码流的码流描述信息中的相应信息与解析获得的视频 参数信息及编码格式信息不相同时， 确定该与该视频参数信息及编码格式 信息对应的参数集值， 将确定的参数集值发送到接收端。 由于在本发明实 施例中码流转换装置根据接收端所需求的目标码流的视频参数信息及编码 格式信息， 确定了其对应的参数集信息， 并提供给接收端， 使接收端可以 根据该参数集值对接收到的视频码流解码， 从而提高对视频码流解码的成 功率。 附图说明 The embodiment of the invention provides a method, a system and a device for acquiring a parameter set value of a video code stream in a transcoding service. In the solution, after the code stream conversion device acquires the code stream request sent by the receiving end, the code stream is parsed and obtained. Corresponding video parameter information and encoding format information in the stream request, and determining that the corresponding information in the code stream description information of the video code stream to be sent by the source end is different from the parsed video parameter information and the encoding format information, And the parameter set value corresponding to the video parameter information and the encoding format information, and the determined parameter set value is sent to the receiving end. In the embodiment of the present invention, the code stream converting device determines the corresponding parameter set information according to the video parameter information and the encoding format information of the target code stream required by the receiving end, and provides the corresponding parameter set information to the receiving end, so that the receiving end can The parameter set value decodes the received video stream to improve the success rate of decoding the video stream. DRAWINGS
此处所说明的附图用来提供对本发明的进一步理解， 构成本发明的一 部分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发 明的不当限定。 在附图中： The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:
图 1为现有技术中转码业务中获取视频码流的实现过程示意图； 图 2 为本发明实施例提供的转码业务中获取视频码流的参数集值的过 程示意图； 1 is a schematic diagram of an implementation process of acquiring a video code stream in a transcoding service in the prior art; FIG. 2 is a schematic diagram of a process of obtaining a parameter set value of a video code stream in a transcoding service according to an embodiment of the present invention;
图 3 为本发明实施例提供的转码业务中获取视频码流的参数集值的系 统的结构示意图； FIG. 3 is a schematic structural diagram of a system for acquiring a parameter set value of a video code stream in a transcoding service according to an embodiment of the present disclosure;
图 4为本发明实施例提供的一种转码业务中获取视频码流参数集值的 装置的结构示意图；
图 5为本发明实施例提供的结合图 4所示的装置对转码业务中获取视 频码流的参数集值， 及获取视频码流的过程示意图； FIG. 4 is a schematic structural diagram of an apparatus for acquiring a video code stream parameter set value in a transcoding service according to an embodiment of the present disclosure; FIG. 5 is a schematic diagram of a process of acquiring a parameter set value of a video code stream in a transcoding service, and acquiring a video code stream according to the apparatus shown in FIG. 4 according to an embodiment of the present disclosure;
图 6为本发明实施例提供的以 RTSP为例，对转码业务中获取参数集值， 及向接收端返回目标码流的过程示意图。 具体实施方式 FIG. 6 is a schematic diagram of a process of obtaining a parameter set value in a transcoding service and returning a target code stream to a receiving end by using an RTSP as an example according to an embodiment of the present invention. detailed description
本发明实施例为了提高转码业务中对视频码流解码的成功率， 提供了 一种转码业务中获取视频码流参数集值的方法、 系统及装置， 由于在本发 明实施例中码流转换装置根据接收端所需求的目标码流的视频参数信息及 编码格式信息， 确定了其对应的参数集信息， 并提供给接收端， 使接收端 可以根据该参数集值对接收到的视频码流解码， 从而提高对视频码流解码 的成功率。 In the embodiment of the present invention, in order to improve the success rate of decoding a video code stream in a transcoding service, a method, a system, and a device for acquiring a video code stream parameter set value in a transcoding service are provided, because the code stream in the embodiment of the present invention The conversion device determines the corresponding parameter set information according to the video parameter information and the encoding format information of the target code stream required by the receiving end, and provides the corresponding parameter set information to the receiving end, so that the receiving end can pair the received video code according to the parameter set value. Stream decoding, thereby increasing the success rate of decoding the video stream.
为了使本发明所要解决的技术问题、 技术方案及有益效果更加清楚、 明白， 以下结合附图和实施例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅用以解释本发明， 并不用于限定本发明。 The present invention will be further described in detail below with reference to the accompanying drawings and embodiments in order to make the present invention. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
图 2 为本发明实施例提供的转码业务中获取视频码流的参数集值的过 程， 该过程包括以下步驟： 2 is a process of obtaining a parameter set value of a video code stream in a transcoding service according to an embodiment of the present invention, where the process includes the following steps:
S201 : 码流转换装置接收接收端发送的码流请求， 解析获得该码流请 求中携带的视频参数信息及编码格式信息。 S201: The code stream conversion device receives the code stream request sent by the receiving end, and parses and obtains the video parameter information and the encoding format information carried in the code stream request.
在涉及视频码流的转码业务中， 当接收端需要获取视频码流时， 需要 向码流转换装置发送码流请求， 其中该码流请求中携带该接收端待接收的 目标码流的视频参数信息及编码格式信息。 In a transcoding service involving a video code stream, when the receiving end needs to obtain a video code stream, the code stream request device needs to send a code stream request, where the code stream request carries a video of the target code stream to be received by the receiving end. Parameter information and encoding format information.
其中该视频参数信息包括： 分辨率信息、 码率信息及帧频信息。 The video parameter information includes: resolution information, code rate information, and frame rate information.
S202: 根据获取的源端发送的待发送的视频码流的码流描述信息， 判 断解析获得视频参数信息及编码格式信息是否与该码流描述信息中的对应 信息相同。
码流转换装置接收到接收端发送的码流请求后， 向源端请求响应内容 的视频码流， 但该视频码流的视频参数信息和编码格式信息可以与接收端 请求的不同。 当源端接收到码流转换装置的请求后， 将相应的视频码流的S202: Determine, according to the obtained code stream description information of the video code stream to be sent sent by the source end, whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information. After receiving the code stream request sent by the receiving end, the code stream converting device requests the video code stream of the response content to the source end, but the video parameter information and the encoding format information of the video code stream may be different from the request of the receiving end. After the source receives the request from the code stream conversion device, the corresponding video stream is
SDP信息发送给码流转换装置。 The SDP information is sent to the code stream conversion device.
S203 : 当确定不相同时， 确定该解析获得的视频参数信息及编码格式 信息对应的参数集值。 S203: When the determination is not the same, determining the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing.
具体在确定与该视频参数信息及编码格式信息对应的参数集值时包 括： 根据解析获得的视频参数信息及编码格式信息， 在自身保存的参数集 值的典型值信息中查找， 获取与所述视频参数信息及编码格式信息最接近 的典型值对应的参数集值。 Specifically, when determining the parameter set value corresponding to the video parameter information and the encoding format information, the method includes: searching, acquiring, and searching in the typical value information of the parameter set value saved by the image parameter information and the encoding format information obtained by the parsing The parameter set value corresponding to the typical value of the video parameter information and the encoding format information.
更进一步具体在本发明实施例中当码流转换装置根据解析获得的视频 参数信息和编码格式信息， 获得该视频参数信息及编码格式信息对应的参 数集值时， 该码流转换装置按照分辨率-码率-帧频的优先级顺序， 在自身保 存的参数集值的典型值信息中， 查找与该参数集中吻合度较高的参数集典 型值， 并获取该典型值对应的参数集值， 即 SPS值和 PPS值。 Further, in the embodiment of the present invention, when the code stream converting device obtains the parameter set value corresponding to the video parameter information and the encoding format information according to the video parameter information and the encoding format information obtained by the parsing, the code stream converting device according to the resolution - the priority order of the code rate-frame rate, in the typical value information of the parameter set value saved by itself, searching for the typical value of the parameter set with high degree of agreement with the parameter set, and obtaining the parameter set value corresponding to the typical value, That is, the SPS value and the PPS value.
S204: 将确定的所述参数集值发送到接收端， 完成与所述接收端的会 话交互。 S204: Send the determined parameter set value to the receiving end to complete a session interaction with the receiving end.
当码流转换装置将确定的参数集值发送到接收端后， 接收端、 码流转 换装置与源端建立链接， 当接收端根据接收到的参数集值对自身的解码器 初始化后， 向码流转换装置发送获取视频码流的信息， 该码流转换装置从 源端获取相应的视频码流， 并根据向接收端提供的参数集值， 将从源端获 取的视频码流进行转码， 得到对应的目标码流后， 将该目标码流发送到接 收端。 After the code stream converting device sends the determined parameter set value to the receiving end, the receiving end, the code stream converting device establishes a link with the source end, and when the receiving end initializes its own decoder according to the received parameter set value, the code is The stream switching device sends the information of the video stream, and the code stream converting device acquires the corresponding video stream from the source, and transcodes the video stream obtained from the source according to the parameter set value provided to the receiving end. After obtaining the corresponding target code stream, the target code stream is sent to the receiving end.
由于在本发明实施例中当码流转换装置接收到接收端发送的码流请求 后， 解析获取的该码流请求中携带的视频参数信息和编码格式信息， 当判
断源端待发送的视频码流的码流描述信息中的相应信息与解析获得的视频 参数信息及编码格式信息不同时， 确定该解析获得的视频参数信息及编码 格式信息对应的参数集值， 并将确定的参数集值发送到接收端， 以便接收 到接收到转码后的视频码流后， 可以根据接收到的参数集值， 对该接收到 的视频码流进行正确的解码并播放。 In the embodiment of the present invention, when the code stream conversion device receives the code stream request sent by the receiving end, and parses the obtained video parameter information and the encoding format information carried in the code stream request, Determining the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing when the corresponding information in the code stream description information of the video code stream to be sent by the source end is different from the parsed video parameter information and the encoding format information, And sending the determined parameter set value to the receiving end, so that after receiving the transcoded video code stream, the received video code stream can be correctly decoded and played according to the received parameter set value.
图 3 为本发明实施例提供的转码业务中获取视频码流的参数集值的系 统的结构示意图， 该系统包括： 接收端 31 , 码流转换装置 32以及源端 33。 其中， FIG. 3 is a schematic structural diagram of a system for acquiring a parameter set value of a video code stream in a transcoding service according to an embodiment of the present invention. The system includes: a receiving end 31, a code stream converting device 32, and a source end 33. among them,
接收端 31 , 用于发送码流请求， 其中该码流请求中携带视频参数信息 及编码格式信息， 并接收码流转换装置发送的参数集值； The receiving end 31 is configured to send a code stream request, where the code stream request carries video parameter information and encoding format information, and receives a parameter set value sent by the code stream converting apparatus;
码流转换装置 32 , 用于接收接收端 31发送的码流请求，解析获取该码 流请求中携带的视频参数信息及编码格式信息， 根据获取的源端发送的待 发送的视频码流的码流描述信息， 判断解析获得视频参数信息及编码格式 信息是否与该码流描述信息中的对应信息相同， 当确定不相同时， 确定该 解析获得的视频参数信息及编码格式信息对应的参数集值， 将确定的所述 参数集值发送到接收端， 完成与所述接收端的会话交互； The code stream conversion device 32 is configured to receive the code stream request sent by the receiving end 31, and parse and obtain the video parameter information and the encoding format information carried in the code stream request, according to the obtained code of the video stream to be sent sent by the source end. Flow description information, determining whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information, and when the determination is not the same, determining the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing Sending the determined parameter set value to the receiving end to complete a session interaction with the receiving end;
源端 33 ,用于向码流转换装置 32发送待发送的视频码流的码流描述信 所述系统中， a source 33, a code stream description message for transmitting a video code stream to be transmitted to the code stream converting device 32, in the system,
所述码流转换装置 32还用于： 接收源端 33发送的视频码流， 根据发 送给接收端 31的参数集值， 将接收到的所述视频码流转换为目标码流， 将 转换后的目标码流发送到接收端 31 ; The code stream conversion device 32 is further configured to: receive the video code stream sent by the source end 33, convert the received video code stream into a target code stream according to a parameter set value sent to the receiving end 31, and convert the video code stream into a target code stream. The target code stream is sent to the receiving end 31;
所述源端 33还用于： 向码流转换装置 32发送视频码流； The source end 33 is further configured to: send a video code stream to the code stream converting device 32;
所述接收端 31还用于： 接收码流转换装置 32转码后的目标码流。 具体的上述转码业务中获取视频码流的参数集值的系统为移动视频监
控系统时， 该接收端即为移动终端， 该码流转换装置即为视频接入单元The receiving end 31 is further configured to: receive the target code stream after the transcoding by the code stream converting device 32. The specific system for obtaining the parameter set value of the video code stream in the above transcoding service is a mobile video monitor. When the system is controlled, the receiving end is a mobile terminal, and the code stream converting device is a video access unit.
( Video Access Unit, VAU ), 该源端即为视频监控前端或者流媒体服务器 等。 (Video Access Unit, VAU), the source end is the video surveillance front end or streaming media server.
图 4为本发明实施例提供的一种转码业务中获取视频码流参数集值的 装置、 即码流转换装置的结构示意图， 该装置包括： FIG. 4 is a schematic structural diagram of a device for acquiring a video code stream parameter set value in a transcoding service according to an embodiment of the present invention, that is, a code stream conversion device, where the device includes:
接收解析模块 41 , 用于接收接收端发送的码流请求， 解析获得该码流 请求中携带的视频参数信息及编码格式信息； The receiving parsing module 41 is configured to receive a code stream request sent by the receiving end, and parse and obtain video parameter information and encoding format information carried in the code stream request;
判断模块 42, 用于根据获取的源端发送的待发送的视频码流的码流描 述信息， 判断解析获得视频参数信息及编码格式信息是否与该码流描述信 息中的对应信息相同； The determining module 42 is configured to determine, according to the obtained code stream description information of the video code stream to be sent sent by the source end, whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information;
参数集生成模块 43 , 用于当判断模块 42判断不相同时，确定该解析获 得的视频参数信息及编码格式信息对应的参数集值； The parameter set generating module 43 is configured to: when the determining module 42 determines that the difference is not the same, determine the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing;
发送模块 44, 用于将确定的所述参数集值发送到接收端， 完成与所述 接收端的会话交互。 The sending module 44 is configured to send the determined parameter set value to the receiving end to complete a session interaction with the receiving end.
具体的该参数集生成模块 43包括： 存储单元 431和确定单元 432, 其 中， The specific parameter set generating module 43 includes: a storage unit 431 and a determining unit 432, wherein
存储单元 431 , 用于保存参数集值的典型值信息； a storage unit 431, configured to save typical value information of the parameter set value;
确定单元 432, 用于根据解析获得的视频参数信息及编码格式信息， 在 自身保存的参数集值的典型值信息中查找， 获取与所述视频参数信息及编 码格式信息最接近的典型值对应的参数集值。 The determining unit 432 is configured to search, according to the video parameter information and the encoding format information obtained by the parsing, the typical value information of the parameter set value saved by itself, and obtain a typical value that is closest to the video parameter information and the encoding format information. Parameter set value.
参数集生成模块 43根据一些典型的视频码流的视频参数信息及编码格 式信息， 以及自身所在的装置的编码器的参数信息， 生成包含多个参数集 值的集合， 其中每个参数集值包括一个码流的 SPS值和一个 PPS值。 因此 当接收解析模块获取了接收端待接收的目的码流的视频参数信息及编码格 式信息后， 根据自身保存的参数集值的集合， 在其中选择一个最接近的参
数集值， 即选择一组最接近的 SPS值和 PPS值， 用于之后的转码操作， 并 与接收端建立会话交互。 The parameter set generating module 43 generates a set including a plurality of parameter set values according to the video parameter information and the encoding format information of some typical video code streams and the parameter information of the encoder of the device in which the device is located, wherein each parameter set value includes The SPS value of a code stream and a PPS value. Therefore, after the receiving parsing module acquires the video parameter information and the encoding format information of the destination code stream to be received by the receiving end, according to the set of the parameter set values saved by itself, select one of the closest parameters. The set value, that is, selects a set of the closest SPS value and PPS value, is used for subsequent transcoding operations, and establishes a session interaction with the receiving end.
所述装置中， In the device,
所述接收解析模块 41还用于： 接收源端发送的视频码流； The receiving parsing module 41 is further configured to: receive a video code stream sent by the source end;
所述装置还包括： The device also includes:
转码模块 45 , 用于根据发送给接收端的参数集值， 将接收到的所述视 频码流转换为目标码流； a transcoding module 45, configured to convert the received video code stream into a target code stream according to a parameter set value sent to the receiving end;
所述发送模块 44还用于： 将转换后的目标码流发送到接收端。 The sending module 44 is further configured to: send the converted target code stream to the receiving end.
图 5为本发明实施例提供的结合图 4所示的装置对转码业务中获取视 频码流的参数集值， 及获取视频码流的过程进行详细说明， 该过程包括： FIG. 5 is a detailed description of the process of obtaining a parameter set value of a video code stream in a transcoding service and acquiring a video code stream according to the apparatus shown in FIG. 4 according to the embodiment of the present invention, where the process includes:
S501 : 接收端向码流转换装置发送码流请求， 其中该码流请求中携带 视频参数信息及编码格式信息。 S501: The receiving end sends a code stream request to the code stream converting apparatus, where the code stream request carries video parameter information and encoding format information.
S502: 码流转换装置接收码流请求， 解析获得该码流请求中携带的该 接收端待接收的目标码流的编码格式信息、 及视频参数信息。 S502: The code stream converting apparatus receives the code stream request, and parses and obtains the encoding format information and the video parameter information of the target code stream to be received by the receiving end carried in the code stream request.
S503 : 码流转换装置向源端请求视频码流信息， 并接收源端返回的视 频码流的 SDP信息。 S503: The code stream converting apparatus requests the video code stream information from the source end, and receives the SDP information of the video code stream returned by the source end.
S504: 判断该源端返回的视频码流的 SDP信息中的相应信息， 是否与 自身解析的该接收端待接收的目标码流的编码格式信息和视频参数信息对 应相同， 当判断相同时， 进行 S506 , 否则， 进行 S505。 S504: determining whether the corresponding information in the SDP information of the video code stream returned by the source end is the same as the coding format information and the video parameter information of the target code stream to be received by the receiving end, and when the judgment is the same, performing S506, otherwise, proceed to S505.
S505 : 确定解析的该接收端待接收的目标码流的编码格式信息和视频 参数信息， 对应的参数集值。 S505: Determine encoding format information and video parameter information of the target code stream to be received by the receiving end, and corresponding parameter set values.
即确定该接收端待接收的目标码流的编码格式信息和视频参数信息， 对应的 SPS值和 PPS值。 That is, the coding format information and the video parameter information of the target code stream to be received by the receiving end, the corresponding SPS value and the PPS value are determined.
S506: 获取源端发送的视频码流的参数集值。 S506: Obtain a parameter set value of the video code stream sent by the source end.
S507: 码流转换装置将该参数集值发送到接收端， 与接收端完成会话
交互。 S507: The code stream conversion device sends the parameter set value to the receiving end, and completes the session with the receiving end. Interaction.
S508: 码流转换装置接收源端发送的视频码流， 根据发送给接收端的 参数集值， 将接收到的视频码流转换为目标码流。 S508: The code stream converting apparatus receives the video code stream sent by the source end, and converts the received video code stream into a target code stream according to the parameter set value sent to the receiving end.
S509: 将转换后的目标码流发送到接收端。 S509: Send the converted target code stream to the receiving end.
在上述实施例中， 码流转换装置与接收端完成会话交互前， 根据接收 端发送的其待接收到的目标码流的视频参数信息及编码格式信息， 获取了 对应的参数集值， 因此在该会话交互过程中会将接收端待接收的目标码流 的参数集值发送到接收端， 以便接收端接收到码流转换装置发送的目标码 流后， 可以根据该参数集值对该目标码流解码并播放。 采用本发明实施例 提供的方案， 可以有效的保证接收端对接收到的目标码流的正确解码， 从 而保证码流业务的正常进行。 并且， 该实现方案使接收端在应用时不再局 限于特定的解码器， 可以向码流转换装置发送其所需的视频参数信息和编 码格式信息， 码流转换装置会根据接收端的不同要求， 灵活获取其所需的 视频码流， 从而提高了视频码流的业务的应用范围。 In the above embodiment, before the completion of the session interaction between the receiving end and the receiving end, the code stream converting device obtains the corresponding parameter set value according to the video parameter information and the encoding format information of the target code stream to be received by the receiving end, so During the session interaction, the parameter set value of the target code stream to be received by the receiving end is sent to the receiving end, so that after receiving the target code stream sent by the code stream converting device, the receiving end may, according to the parameter set value, the target code. The stream is decoded and played. With the solution provided by the embodiment of the present invention, the receiving end can correctly ensure the correct decoding of the received target code stream, thereby ensuring the normal operation of the code stream service. Moreover, the implementation scheme enables the receiving end to be no longer limited to a specific decoder when applying, and can send the required video parameter information and encoding format information to the code stream converting device, and the code stream converting device according to different requirements of the receiving end, Flexible access to the video stream required by it, thereby increasing the application range of the video stream service.
当码流转换装置可以支持任何参数集值的视频码流时， 该码流转换装 置判断源端待发送的视频码流的 SDP信息的相应信息， 与接收端待接收的 目标码流的视频参数信息和编码格式信息不同时， 可以直接根据解析获得 的该接收端待接收的目标码流的视频参数信息和编码格式信息， 确定其对 应的参数集值， 并将该确定的参数集值在会话交互过程中发送到接收端。 When the code stream converting device can support the video code stream of any parameter set value, the code stream converting device determines the corresponding information of the SDP information of the video code stream to be sent by the source end, and the video parameter of the target code stream to be received by the receiving end. When the information and the encoding format information are different, the video parameter information and the encoding format information of the target code stream to be received by the receiving end may be directly determined according to the parsing, and the corresponding parameter set value is determined, and the determined parameter set value is in the session. Sent to the receiving end during the interaction.
图 6 为本发明实施例提供的以实时传送流媒体协议 ( Real-Time FIG. 6 is a real-time transport streaming protocol according to an embodiment of the present invention (Real-Time)
Streaming Protocol, RTSP ) 为例， 对转码业务中获取参数集值， 及向接收 端返回目标码流的过程进行说明， 该过程包括以下步驟： The Streaming Protocol (RTSP) is used as an example to describe the process of obtaining the parameter set value in the transcoding service and returning the target code stream to the receiving end. The process includes the following steps:
S601 :接收端通过描述（ Describle )请求向码流转换装置发送码流请求， 其中 Describle请求中携带其待接收的目标码流的视频参数信息。 S601: The receiving end sends a code stream request to the code stream converting apparatus by using a Describle request, where the Describle request carries the video parameter information of the target code stream to be received.
S602: 码流转换装置接收到接收端发送的 Describle请求， 根据接收端
请求的码流的内容， 向源端发送 Describle请求， 请求内容相同但相应的视 频参数信息和编码格式信息可以不同的视频码流。 S602: The code stream converting apparatus receives the Describle request sent by the receiving end, according to the receiving end. The content of the requested code stream is sent to the source end by a Describle request, and the video stream with the same content but corresponding video parameter information and encoding format information may be different.
S603: 源端接收到码流转换装置发送的 Describle请求后， 获取相应视 频码流的 SDP信息， 将携带 SDP信息的 Describle响应信息发送到码流转 换装置。 S603: After receiving the Describle request sent by the code stream converting apparatus, the source end acquires the SDP information of the corresponding video code stream, and sends the Describle response information carrying the SDP information to the code stream converting apparatus.
S604: 码流转换装置判断解析获得的接收端待接收的目标码流的视频 参数信息和编码格式信息，与该 Describle响应信息中携带的 SDP信息中对 应信息是否相同， 当判断结果为否时， 进行 S605 , 否则， 进行 S607。 S604: The code stream conversion device determines whether the video parameter information and the encoding format information of the target code stream to be received by the receiving end are the same as the corresponding information in the SDP information carried in the Describle response information, and when the determination result is no, S605 is performed, otherwise, S607 is performed.
S605: 根据解析的该接收端待接收的目标码流的编码格式信息和视频 参数信息， 及自身保存的参数集值的典型值信息， 获取与所述视频参数信 息最接近的典型值对应的 SPS值和 PPS值。 S605: Acquire an SPS corresponding to a typical value closest to the video parameter information according to the parsed format information and video parameter information of the target code stream to be received by the receiving end, and the typical value information of the parameter set value saved by the receiving end. Value and PPS value.
S606: 根据获取的 SPS值和 PPS值， 及该 Describle响应信息中携带的 SDP信息， 生成与该获取的 SPS值和 PPS值对应的 SDP信息。 S606: Generate SDP information corresponding to the acquired SPS value and the PPS value according to the obtained SPS value and the PPS value, and the SDP information carried in the Describle response information.
S607: 将 SDP信息携带在 Describle响应信息中， 发送到接收端。 S607: The SDP information is carried in the Describle response message and sent to the receiving end.
S608: 码流转换装置与接收端和源端， 分别通过 Setup信令交互， 完成 S608: the code stream conversion device interacts with the receiving end and the source end by using Setup signaling, respectively.
RTSP的链接建立操作。 RTSP link establishment operation.
S609: 接收端根据接收到的 SDP信息， 对自身的解码器初始化后发送 Play请求到码流转换装置， 并由码流转换装置将该 Play请求转发到源端。 S609: The receiving end initializes its own decoder according to the received SDP information, and then sends a Play request to the code stream converting device, and the code stream converting device forwards the Play request to the source end.
S610:源端向码流转换装置输出源码流，码流转换装置根据确定的 SDP 信息， 将其转换成对应的目标码流并将其发送到接收端。 S610: The source end outputs a source stream to the code stream converting device, and the code stream converting device converts the corresponding source code stream into a corresponding target code stream according to the determined SDP information and sends the source code stream to the receiving end.
S611 :接收端根据接收到的 SDP信息，对接收到的目标码流解码播放。 本发明实施例提供了一种转码业务中获取视频码流的参数集值的方 法、 系统及装置， 该方案中当码流转换装置获取了接收端发送的码流请求 后， 解析获取该码流请求中对应的视频参数信息及编码格式信息， 并在判 断源端待发送的视频码流的码流描述信息中的相应信息与解析获得的视频
参数信息及编码格式信息不相同时， 确定该与该视频参数信息及编码格式 信息对应的参数集值， 将确定的参数集值发送到接收端。 由于在本发明实 施例中码流转换装置根据接收端所需求的目标码流的视频参数信息及编码 格式信息， 确定了其对应的参数集信息， 并提供给接收端， 使接收端可以 根据该参数集值对接收到的视频码流解码， 从而提高对视频码流解码的成 功率。 S611: The receiving end decodes and plays the received target code stream according to the received SDP information. The embodiment of the invention provides a method, a system and a device for acquiring a parameter set value of a video code stream in a transcoding service. In the solution, after the code stream conversion device acquires the code stream request sent by the receiving end, the code stream is parsed and obtained. Corresponding video parameter information and encoding format information in the stream request, and determining corresponding information in the code stream description information of the video stream to be sent at the source end and the video obtained by parsing When the parameter information and the encoding format information are different, the parameter set value corresponding to the video parameter information and the encoding format information is determined, and the determined parameter set value is sent to the receiving end. In the embodiment of the present invention, the code stream converting device determines the corresponding parameter set information according to the video parameter information and the encoding format information of the target code stream required by the receiving end, and provides the corresponding parameter set information to the receiving end, so that the receiving end can The parameter set value decodes the received video stream to improve the success rate of decoding the video stream.
上述说明示出并描述了本发明的优选实施例， 但如前所述， 应当理解 本发明并非局限于本文所披露的形式， 不应看作是对其他实施例的排除， 而可用于各种其他组合、 修改和环境， 并能够在本文所述发明构想范围内， 通过上述教导或相关领域的技术或知识进行改动。 而本领域人员所进行的 改动和变化不脱离本发明的精神和范围， 则都应在本发明所附权力要求的 保护范围内。
The above description shows and describes a preferred embodiment of the present invention, but as described above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be construed as being Other combinations, modifications, and environments are possible and can be modified by the teachings of the above teachings or related art within the scope of the inventive concept described herein. The modifications and variations made by those skilled in the art are intended to be within the scope of the appended claims.
Claims
1、 一种转码业务中获取视频码流的参数集值的方法， 其特征在于， 包 括： A method for obtaining a parameter set value of a video code stream in a transcoding service, characterized in that:
码流转换装置接收接收端发送的码流请求 , 解析获得该码流请求中携 带的视频参数信息及编码格式信息； The code stream conversion device receives the code stream request sent by the receiving end, and parses and obtains the video parameter information and the encoding format information carried in the code stream request;
根据获取的源端发送的待发送的视频码流的码流描述信息， 判断解析 获得视频参数信息及编码格式信息是否与该码流描述信息中的对应信息相 同； And determining, according to the obtained code stream description information of the video code stream to be sent sent by the source end, whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information;
当确定不相同时， 确定该解析获得的视频参数信息及编码格式信息对 应的参数集值； When the determination is not the same, determining the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing;
将确定的所述参数集值发送到接收端， 完成与所述接收端的会话交互。 Sending the determined parameter set value to the receiving end to complete a session interaction with the receiving end.
2、 如权利要求 1所述的方法， 其特征在于， 所述确定该解析获取的视 频参数信息对应的参数集值包括： The method according to claim 1, wherein the determining the parameter set value corresponding to the video parameter information obtained by the parsing comprises:
根据解析获得的视频参数信息及编码格式信息， 在自身保存的参数集 值的典型值信息中查找， 获取与所述视频参数信息及编码格式信息最接近 的典型值对应的参数集值。 The video parameter information and the encoding format information obtained by the parsing are searched for in the typical value information of the parameter set value saved by itself, and the parameter set value corresponding to the typical value closest to the video parameter information and the encoding format information is obtained.
3、 如权利要求 1所述的方法， 其特征在于， 所述视频参数信息包括： 分辨率信息、 码率信息及帧频信息。 3. The method according to claim 1, wherein the video parameter information comprises: resolution information, code rate information, and frame rate information.
4、 如权利要求 1所述的方法， 其特征在于， 所述参数集值包括： 顺序参数集值和图像参数集值。 4. The method according to claim 1, wherein the parameter set value comprises: a sequence parameter set value and an image parameter set value.
5、 如权利要求 1或 2所述的方法， 其特征在于， 所述方法还包括： 接收源端发送的视频码流； The method according to claim 1 or 2, wherein the method further comprises: receiving a video code stream sent by the source end;
根据发送给接收端的参数集值， 将接收到的所述视频码流转换为目标 码流； Converting the received video code stream into a target code stream according to a parameter set value sent to the receiving end;
将转换后的目标码流发送到接收端。 The converted target code stream is sent to the receiving end.
6、 一种转码业务中获取视频码流的参数集值的系统， 其特征在于， 包 括： A system for obtaining a parameter set value of a video code stream in a transcoding service, characterized in that:
接收端， 用于发送码流请求， 其中该码流请求中携带视频参数信息及 编码格式信息， 并接收码流转换装置发送的参数集值； The receiving end is configured to send a code stream request, where the code stream request carries video parameter information and encoding format information, and receives a parameter set value sent by the code stream converting device;
码流转换装置， 用于接收接收端发送的码流请求， 解析获取该码流请 求中携带的视频参数信息及编码格式信息， 根据获取的源端发送的待发送 的视频码流的码流描述信息， 判断解析获得视频参数信息及编码格式信息 是否与该码流描述信息中的对应信息相同， 当确定不相同时， 确定该解析 获得的视频参数信息及编码格式信息对应的参数集值， 将确定的所述参数 集值发送到接收端， 完成与所述接收端的会话交互； The code stream conversion device is configured to receive a code stream request sent by the receiving end, parse and obtain the video parameter information and the encoding format information carried in the code stream request, and describe the code stream of the video code stream to be sent sent by the source end according to the obtained source stream Determining whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information. When the determination is not the same, determining the parameter set value corresponding to the video parameter information and the encoding format information obtained by the parsing, The determined parameter set value is sent to the receiving end, and the session interaction with the receiving end is completed;
源端， 用于向码流转换装置发送待发送的视频码流的码流描述信息。 The source end is configured to send code stream description information of the video code stream to be sent to the code stream converting apparatus.
7、 如权利要求 6所述的系统， 其特征在于， 所述系统中， 7. The system of claim 6 wherein: in the system,
所述码流转换装置还用于： 接收源端发送的视频码流， 根据发送给接 收端的参数集值， 将接收到的所述视频码流转换为目标码流， 将转换后的 目标码流发送到接收端； The code stream converting apparatus is further configured to: receive a video code stream sent by the source end, convert the received video code stream into a target code stream according to a parameter set value sent to the receiving end, and convert the converted target code stream Send to the receiving end;
所述源端还用于： 向码流转换装置发送视频码流； The source is further configured to: send a video code stream to the code stream converting device;
所述接收端还用于： 接收码流转换装置转码后的目标码流。 The receiving end is further configured to: receive a target code stream after transcoding by the code stream converting device.
8、 一种转码业务中获取视频码流的参数集值的装置， 其特征在于， 包 括： 8. A device for obtaining a parameter set value of a video code stream in a transcoding service, characterized in that:
接收解析模块， 用于接收接收端发送的码流请求， 解析获得该码流请 求中携带的视频参数信息及编码格式信息； a receiving parsing module, configured to receive a code stream request sent by the receiving end, and parse and obtain video parameter information and encoding format information carried in the code stream request;
判断模块， 用于根据获取的源端发送的待发送的视频码流的码流描述 信息， 判断解析获得视频参数信息及编码格式信息是否与该码流描述信息 中的对应信息相同； a determining module, configured to determine, according to the obtained code stream description information of the video code stream to be sent sent by the source end, whether the video parameter information and the encoding format information obtained by the parsing are the same as the corresponding information in the code stream description information;
参数集生成模块， 用于当判断模块判断不相同时， 确定该解析获得的 视频参数信息及编码格式信息对应的参数集值； a parameter set generating module, configured to determine, when the determining module determines that the difference is not the same, Video parameter information and parameter set values corresponding to the encoding format information;
发送模块， 用于将确定的所述参数集值发送到接收端， 完成与所述接 收端的会话交互。 And a sending module, configured to send the determined parameter set value to the receiving end to complete a session interaction with the receiving end.
9、如权利要求 8所述的装置， 其特征在于， 所述参数集生成模块包括： 存储单元， 用于保存的参数集值的典型值信息； The device according to claim 8, wherein the parameter set generating module comprises: a storage unit, and typical value information of the saved parameter set value;
确定单元， 用于根据解析获得的视频参数信息及编码格式信息， 在自 身保存的参数集值的典型值信息中查找， 获取与所述视频参数信息及编码 格式信息最接近的典型值对应的参数集值。 a determining unit, configured to search, according to the video parameter information and the encoding format information obtained by the parsing, in a typical value information of the parameter set value saved by itself, and obtain a parameter corresponding to a typical value closest to the video parameter information and the encoding format information Set value.
10、 如权利要求 8或 9所述的装置， 其特征在于， 所述装置中， 所述接收解析模块还用于， 接收源端发送的视频码流； The device according to claim 8 or 9, wherein the receiving and analyzing module is further configured to: receive a video code stream sent by the source end;
所述装置还包括： The device also includes:
转码模块， 用于根据发送给接收端的参数集值， 将接收到的所述视频 码流转换为目标码流； a transcoding module, configured to convert the received video code stream into a target code stream according to a parameter set value sent to the receiving end;
所述发送模块还用于， 将转换后的目标码流发送到接收端。 The sending module is further configured to send the converted target code stream to the receiving end.
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| CN102014284B (en) | 2014-09-10 |
| CN102014284A (en) | 2011-04-13 |
| RU2540776C1 (en) | 2015-02-10 |
| RU2013131755A (en) | 2015-01-20 |
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