CN103561279B - Method and system for playing multi-media file and cloud transcoding service device - Google Patents
Method and system for playing multi-media file and cloud transcoding service device Download PDFInfo
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- CN103561279B CN103561279B CN201310470406.1A CN201310470406A CN103561279B CN 103561279 B CN103561279 B CN 103561279B CN 201310470406 A CN201310470406 A CN 201310470406A CN 103561279 B CN103561279 B CN 103561279B
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- 238000010168 coupling process Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a method for playing a multi-media file. The method comprises the steps that a terminal device sends the decoding capability and the bandwidth attribute of itself and requests a video service, after transcoding of the multi-media file is determined according to the decoding capability and the bandwidth attribute of the terminal device, a cloud transcoding service device transcodes the multi-media file and sends the transcoded multi-media file to the terminal device, and the terminal device decodes and plays the transcoded multi-media file. The invention further discloses a multi-media file playing system and the cloud transcoding service device. By means of the method for playing the multi-media file, the multi-media file playing system and the cloud transcoding service device, the terminal device reaching a low-end protocol standard can smoothly play the multi-media file reaching a high-end encoding protocol standard, the cost of the terminal device is saved, meanwhile, the multi-media file can be smoothly played, and image distortion is reduced.
Description
Technical field
The present invention relates to multimedia file play-back technology, more particularly, to one kind realize multimedia file by cloud transcoding playing
Method, system and cloud transcoding service equipment.
Background technology
, always in continuous evolution, the consensus standard based on h.265 encoding and decoding is for the consensus standard of multimedia file encoding and decoding
Quietly emerge.But, existing terminal unit major part is merely able to support to play based on h.264 encoding and decoding consensus standard or lower
The multimedia file of encoding and decoding consensus standard.These terminal units mostly are embedded architecture, are cost-effective, reduce power consumption, embedding
The terminal unit entering formula framework is decoded using based on the hardware of specific decoding chip, therefore, by the decoding energy of decoding chip
Power restriction, a kind of terminal unit of model can only support the multimedia file of specific encoding and decoding consensus standard, such as h.264,
Mpeg2, h.263 etc..
How easily to realize supporting that the terminal unit of low side encoding and decoding consensus standard plays high-end encoding and decoding consensus standard
Multimedia file, and ensure smooth playing multimedia file, the distortion reducing multimedia file image is current urgent need to resolve
Problem.
Content of the invention
In view of this, the main purpose of the embodiment of the present invention be to provide a kind of method for broadcasting multimedia file and system,
Cloud transcoding service equipment, makes terminal unit need not support that multiple encoding and decoding consensus standards just can play high-end encoding and decoding consensus standard
Multimedia file, and can guarantee that smooth playing multimedia file, reduce the distortion of multimedia file image.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
Embodiments provide a kind of method that multimedia file is play, comprising:
Terminal unit sends itself decoding capability and bandwidth attribute and asks Video service；Decoding according to terminal unit
Ability and bandwidth attribute determination need to carry out after transcoding to multimedia file, and cloud transcoding service equipment carries out to multimedia file turning
Code, and send multimedia file after transcoding to terminal unit；Terminal unit decodes to multimedia file after transcoding and plays.
Preferably, methods described also includes: in multimedia file playing process after transcoding, detection terminal equipment and cloud transcoding
Bandwidth between service equipment or terminal unit and video server, and made according to testing result adjustment broadcasting multimedia file
Bandwidth.
Preferably, the decoding capability of itself and bandwidth attribute are sent to video server by described terminal unit；
The described decoding capability according to terminal unit and bandwidth attribute determine to be needed to carry out transcoding to multimedia file to include:
After described video server receives decoding capability and the bandwidth attribute of terminal unit transmission, judge the encoding and decoding of multimedia file
Whether the encoding and decoding consensus standard that consensus standard is supported with terminal unit mates, and when judged result is to mismatch, determines that needs are right
Multimedia file carries out transcoding, and video server sends the request of multimedia file transcoding to cloud transcoding service equipment.
Preferably, the decoding capability of itself and bandwidth attribute are sent to video server by described terminal unit；
The described decoding capability according to terminal unit and bandwidth attribute determine to be needed to carry out transcoding to multimedia file to include:
After described video server receives decoding capability and the bandwidth attribute of terminal unit transmission, judge the encoding and decoding of multimedia file
Whether the encoding and decoding consensus standard that consensus standard is supported with terminal unit mates, and when judged result is to mismatch, determines that needs are right
Multimedia file carries out transcoding；Described video server notifies described terminal unit, and described terminal unit takes to described cloud transcoding
Business equipment sends the request of multimedia file transcoding.
Preferably, described cloud transcoding service equipment carries out transcoding to multimedia file and includes: cloud transcoding service equipment according to
The decoding capability, bandwidth attribute and the video data parameter that obtain terminal unit are calculated transcoding parameter, and multimedia file is entered
Row transcoding.
The embodiment of the present invention additionally provides a kind of cloud transcoding service equipment, comprising: data reception module, parameter matching computation
Module, transcoding module and release module；Wherein,
Data reception module, for receiving decoding capability and the bandwidth attribute of multimedia file data and terminal unit；
Parameter matching computation module, for the decoding capability of the terminal unit according to acquisition, bandwidth attribute and video data
Parameter calculates transcoding parameter；
Transcoding module, for carrying out transcoding according to described transcoding parameter to multimedia file；
Release module, for issuing the multimedia file data after transcoding.
The embodiment of the present invention additionally provides a kind of multimedia file playing system, comprising: terminal unit, video server and
Cloud transcoding service equipment；Wherein,
Terminal unit, for sending itself decoding capability and the network bandwidth and asking Video service；After receiving transcoding
Multimedia file decodes and plays；
Video server, determines the need for multimedia literary composition for the decoding capability according to terminal unit and bandwidth attribute
Part carries out transcoding, and sends the request of multimedia file transcoding to cloud transcoding service equipment；Or receive the many of cloud transcoding service equipment
Media file transcoding solicited message, provides multimedia file to cloud transcoding service equipment；
Cloud transcoding service equipment, for transcoding is carried out to multimedia file, and by the multimedia file after transcoding send to
Terminal unit.
Preferably, described system also includes: bandwidth detection equipment, in multimedia file playing process after transcoding,
Bandwidth between detection terminal equipment and cloud transcoding service equipment or terminal unit and video server, and according to testing result
The bandwidth that multimedia file uses is play in adjustment.
Preferably, described terminal unit, for being sent to video server by the decoding capability of itself, bandwidth attribute；
Described video server, the decoding capability sending for receiving terminal apparatus and bandwidth attribute, judge multimedia literary composition
Whether the encoding and decoding consensus standard that the encoding and decoding consensus standard of part is supported with terminal unit mates, and is to mismatch in judged result
When, determining needs to carry out transcoding to multimedia file, sends the request of multimedia file transcoding to cloud transcoding service equipment；
Described cloud transcoding service equipment, is additionally operable to receive the request of multimedia file transcoding.
Preferably, described terminal unit, for being sent to video server by the decoding capability of itself, bandwidth attribute；Also
For receiving the notice of video server transmission, and send the request of multimedia file transcoding to described cloud transcoding service equipment；
Described video server, the decoding capability sending for receiving terminal apparatus and bandwidth attribute, judge multimedia literary composition
Whether the encoding and decoding consensus standard that the encoding and decoding consensus standard of part is supported with terminal unit mates, and is to mismatch in judged result
When, determine and need multimedia file is carried out transcoding, notify terminal unit；
Described cloud transcoding service equipment, is additionally operable to receive the request of multimedia file transcoding.
Preferably, described cloud transcoding service equipment carries out transcoding to multimedia file and includes:
Described cloud transcoding service equipment is according to decoding capability, bandwidth attribute and the video data parameter meter obtaining terminal unit
Calculation obtains transcoding parameter and carries out transcoding to multimedia file.
Method and system that multimedia file that the embodiment of the present invention is provided is play, cloud transcoding service equipment, terminal sets
Preparation is given itself decoding capability and bandwidth attribute and is asked Video service, the decoding capability according to terminal unit and bandwidth attribute
Determining needs to carry out after transcoding to multimedia file, and cloud transcoding service equipment carries out transcoding to multimedia file, and by after transcoding
Multimedia file be sent to terminal unit be decoded play, the terminal of support low side encoding and decoding consensus standard so, can be made
The multimedia file of device plays high-end encoding and decoding consensus standard.
In the embodiment of the present invention, the decoder in terminal unit need not support that multiple encoding and decoding consensus standards just can play height
The multimedia file of end encoding and decoding consensus standard, so, can save terminal unit cost to greatest extent, reduce terminal unit
Power consumption；Cloud transcoding service equipment adjusts the transcoding parameter of multimedia file according to the bandwidth attribute of terminal unit, is ensureing many matchmakers
Reduce the distortion of multimedia file image while body file smooth playing.
In addition, in order to solve in prior art due to asking that the code check and frame per second playing multimedia file is fixed and led to
Topic: when the network bandwidth is very low, multimedia file is play situations such as interim card, flower screen；When the network bandwidth is very high, multimedia file
The unserviceable situation of redundant mesh bandwidth in broadcasting；The embodiment of the present invention can be play multimedia file further after transcoding
During, bandwidth between detection terminal equipment and cloud transcoding service equipment, and adjusted according to testing result and play multimedia literary composition
The bandwidth that part uses；So, the network bandwidth can be made full use of, the video allowing users to enjoy with the network bandwidth is adapted is clear
Degree and fluency.
Brief description
The basic handling schematic flow sheet of the method that Fig. 1 plays for embodiment of the present invention multimedia file；
Fig. 2 implements schematic flow sheet for the method for the embodiment of the present invention 1 multimedia file broadcasting；
Fig. 3 is that the flow process that implements of the embodiment of the present invention 1 method for broadcasting multimedia file after adjustment arranges bandwidth is illustrated
Figure；
Fig. 4 is the composition structural representation of the system that the embodiment of the present invention 1 multimedia file is play；
Fig. 5 implements schematic flow sheet for the method for the embodiment of the present invention 2 multimedia file broadcasting；
Fig. 6 is that the flow process that implements of the embodiment of the present invention 2 method for broadcasting multimedia file after adjustment arranges bandwidth is illustrated
Figure；
Fig. 7 is the composition structural representation of the system that the embodiment of the present invention 2 multimedia file is play；
Fig. 8 is the composition structural representation of embodiment of the present invention cloud transcoding service equipment.
Specific embodiment
The basic thought of the embodiment of the present invention is: terminal unit sends itself decoding capability and bandwidth attribute and asks to regard
Be taken in small doses at short intervals business, and the decoding capability according to terminal unit and bandwidth attribute determination need to carry out after transcoding to multimedia file, cloud transcoding
Service equipment carries out transcoding to multimedia file, and the multimedia file after transcoding is sent to terminal unit, terminal unit pair
After transcoding, multimedia file decodes and plays.
Further, in multimedia file playing process after transcoding, can by bandwidth detection equipment detection terminal equipment with
Bandwidth between cloud transcoding service equipment or terminal unit and video server, and broadcasting multimedia is adjusted according to testing result
The bandwidth that file uses.
Here, terminal unit sends itself decoding capability and bandwidth attribute to video server and asks Video service；
When itself decoding capability and bandwidth attribute are sent to video server by terminal unit, accordingly, described basis
The decoding capability of terminal unit and bandwidth attribute determine to be needed to carry out transcoding to multimedia file to include: described video server connects
After receiving decoding capability and the bandwidth attribute of terminal unit transmission, judge that the encoding and decoding consensus standard of multimedia file is set with terminal
Whether the standby encoding and decoding consensus standard supported mates, and when judged result is to mismatch, determines and needs multimedia file to be carried out turn
Code, video server sends the request of multimedia file transcoding to cloud transcoding service equipment, and cloud transcoding service equipment receives many matchmakers
After the request of body file transcoding, transcoding is carried out to multimedia file；
Wherein, it is also possible to not taken from video server to cloud transcoding after determination needs to carry out transcoding to multimedia file
Business equipment sends the request of multimedia file transcoding, but notifies terminal unit by video server, from terminal unit to cloud transcoding
Service equipment sends the request of multimedia file transcoding.
Described cloud transcoding service equipment carries out transcoding to multimedia file and includes: cloud transcoding service equipment is from video server
Obtain multimedia file, transcoding parameter be calculated according to the decoding capability of terminal unit, bandwidth attribute and video data parameter,
And multimedia file after transcoding is sent to terminal unit decodes and play.
Here, described video data parameter and transcoding parameter all include code check, frame per second, resolution, code/decode format, i frame
Interval, the ratio of width to height, scan type and frame coding/field coding etc..
Transcoding parameter is calculated according to the decoding capability of terminal unit, bandwidth attribute and video data parameter particularly as follows:
Setting calculates the excellent of the decoding capability of terminal unit, bandwidth attribute and the video data parameter using during transcoding parameter
, it may be assumed that the decoding capability of setting terminal unit is the first priority, the coding parameter that terminal unit is supported is as the volume using for first level
Code parameter.
Setting bandwidth attribute is the second priority, adjusts code check and the frame per second size of multimedia file according to bandwidth attribute,
Specific: when the network bandwidth is low, the higher encoded attributes of compression ratio to be adopted according to coded format, reach adjustment code check and frame per second is big
Little purpose；When the network bandwidth is sufficient, suitably increase code check and frame per second, increase definition and the fluency of multimedia file, with
Improve Consumer's Experience.
Setting video data parameter is third priority, when not having coded format conversion, only need to consider terminal unit
The modification of the video data parameter that decoding capability and bandwidth attribute lead to, other video data parameters keep constant.
It should be noted that the terminal unit described in the embodiment of the present invention is not limited only to Set Top Box, every have many matchmakers
The terminal unit of body file playing function may be suitable for the method that the multimedia file of the present invention is play, and all should belong to this
In the range of bright terminal unit to be protected.
The basic handling flow process of the method that embodiment of the present invention multimedia file is play is as shown in figure 1, comprise the following steps:
Step 101, terminal unit sends itself decoding capability and bandwidth attribute and asks Video service；
Here, terminal unit sends itself decoding capability and bandwidth attribute to video server and asks Video service.
Step 102, the decoding capability according to terminal unit and bandwidth attribute determine to be needed to carry out transcoding to multimedia file
Afterwards, cloud transcoding service equipment is to multimedia file transcoding, and the multimedia file after transcoding is sent to terminal unit；
Here, the described decoding capability according to terminal unit and bandwidth attribute determination need to carry out transcoding to multimedia file
Including:
Itself decoding capability and bandwidth attribute are sent to video server by terminal unit, and video server receives terminal
After the decoding capability of equipment transmission and bandwidth attribute, judge encoding and decoding consensus standard and the terminal unit support of multimedia file
Whether encoding and decoding consensus standard mates, and when judged result is to mismatch, determines and needs multimedia file is carried out transcoding, video takes
Business device sends the request of multimedia file transcoding to cloud transcoding server, and cloud transcoding service equipment receives multimedia file transcoding please
After asking, transcoding is carried out to multimedia file；When judged result is coupling, terminal unit is directly provided to be asked by video server
Video service, terminal unit decodes and plays multimedia file, terminate currently processed flow process；
Wherein, cloud transcoding service equipment carries out transcoding to multimedia file and includes: cloud transcoding service equipment is from Video service
Device obtains multimedia file, is calculated transcoding ginseng according to the decoding capability of terminal unit, bandwidth attribute and video data parameter
Number, carries out transcoding to multimedia file；And multimedia file after transcoding is sent to terminal unit decodes and play；
Here, described video data parameter and transcoding parameter all include code check, frame per second, resolution, code/decode format, i frame
Interval, the ratio of width to height, scan type and frame coding/field coding etc..
Specifically, when the network bandwidth of terminal unit is low, suitably reduce the resolution of multimedia file, high using compression ratio
Transcoding parameter, to ensure that terminal unit can play multimedia file glibly；When the network bandwidth of terminal unit is sufficient, adopt
With the low transcoding parameter of compression ratio, to ensure terminal unit while smooth playing multimedia file, reduce the distortion of image.
Step 103, terminal unit decodes to the multimedia file after transcoding and plays.
After step 103, the method for the embodiment of the present invention can also include step 104: multimedia file after transcoding
In playing process, bandwidth between detection terminal equipment and cloud transcoding service equipment, and adjusted according to bandwidth detection result and play
The bandwidth that multimedia file uses.
The technical solution of the present invention is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
The method that the embodiment of the present invention 1 multimedia file is play implement flow process as shown in Fig. 2 in the present embodiment,
The decoding capability of itself and bandwidth attribute are sent to video server by terminal unit, comprise the following steps:
Step 201, terminal unit sends itself decoding capability and bandwidth attribute to video server and asks video to take
Business.
Step 202～203, video server judges encoding and decoding consensus standard and the terminal unit support of multimedia file
Whether encoding and decoding consensus standard mates, and when judged result is coupling, video server directly provides what terminal unit asked to regard
Be taken in small doses at short intervals business, and terminal unit decodes and play multimedia file, terminates currently processed flow process；When judged result is to mismatch, execution
Step 204.
Step 204, video server sends the request of multimedia file transcoding to cloud transcoding service equipment；
Specifically, video server, to during the transmission multimedia file transcoding request of cloud transcoding service equipment, takes to cloud transcoding
URL (url, the uniform of data after the decoding capability of business equipment offer terminal unit, bandwidth attribute and transcoding
Resource locator) address.
Step 205, cloud transcoding service equipment carries out transcoding to multimedia file, and the multimedia file after transcoding is sent
To the url address specified；
Specifically, cloud transcoding service equipment obtains multimedia file from video server, according to the decoding energy of terminal unit
Power, bandwidth attribute and video data parameter are calculated transcoding parameter, and multimedia file is carried out with transcoding, and by the number after transcoding
According to being sent to the url address specified；
Here, when the network bandwidth of terminal unit is low, suitably reduce the resolution of multimedia file, high using compression ratio
Transcoding parameter, to ensure that terminal unit can play multimedia file glibly；When the network bandwidth of terminal unit is sufficient,
Using the low transcoding parameter of compression ratio, to ensure terminal unit while smooth playing multimedia file, reduce the mistake of image
Very.
Step 206, video server sends url address to terminal unit；
Here, video server can be with video server to cloud transcoding service equipment to terminal unit transmission url address
Request transcoding is carried out simultaneously that is to say, that step 206 and step 204 can synchronously execute.
Step 207, after terminal unit obtains url address, multimedia file after url address acquisition transcoding decoding is broadcast
Put.
After step 207, the method for the embodiment of the present invention 1 also includes step 208: after transcoding, multimedia file is play
During, bandwidth between detection terminal equipment and video server, and multimedia literary composition is play according to testing result real-time adjustment
The bandwidth that part uses；
Here, detection bandwidth can be completed by bandwidth detection equipment；Bandwidth detection equipment can be integrated in respectively terminal unit and
Exist inside video server or as independent equipment；
Specifically, real network bandwidth is detected to wish to play the bandwidth using during video less than user setup, increase sets
The bandwidth put；Or ignore the bandwidth of user setup, using the bandwidth match of the actual network bandwidth and user setup, prevent user
When the band of setting is wider than the bandwidth of reality, occur because the parameter of transmission mistake leads to video playback abnormal situation；
Real network band is detected and be wider than the bandwidth that user setup wishes to use during broadcasting video, reduce the band of setting
Width, makes the bandwidth match of real network bandwidth and user setup, so that unnecessary network when effectively utilizes multimedia file is play
Bandwidth.
After the bandwidth of adjustment setting, the embodiment of the present invention 1 method for broadcasting multimedia file implements flow process such as Fig. 3 institute
Show, comprise the following steps:
Step 301, terminal unit sends, to video server, the bandwidth that user updates.
Step 302～303, video server judge transcoding parameter and update bandwidth whether mate, judged result be
Timing, video server directly provides the Video service that terminal unit is asked, and terminal unit decodes and plays multimedia file,
Terminate currently processed flow process；When judged result is to mismatch, execution step 204.
Step 304, transcoding parameter readjusted by transcoding service equipment；
Specifically, described transcoding parameter of readjusting is code check and the frame per second adjusting transcoding parameter, cloud transcoding service equipment
Can need to select image sharpness (code check) priority principle or picture fluency (frame per second) priority principle according to user；Select
During image sharpness priority principle, then the bandwidth to mate setting for the code check of adjustment multimedia parameter；Select picture fluency excellent
During first principle, then the frame per second by adjusting multimedia parameter mates the bandwidth of setting.
Step 305～307, process operation is identical with step 205～207, repeats no more here.
For realizing the method that above-mentioned multimedia file is play, the group of the system that the embodiment of the present invention 1 multimedia file is play
Become structure as shown in figure 4, this system includes: terminal unit 10, video server 20 and cloud transcoding service equipment 30；Wherein,
Terminal unit 10, for sending itself decoding capability and the network bandwidth to video server 20 and asking video to take
Business；Receive the multimedia file after transcoding and decode broadcasting；
Video server 20, the decoding capability sending for receiving terminal apparatus 10 and bandwidth attribute；Judge multimedia literary composition
Whether the encoding and decoding consensus standard that the encoding and decoding consensus standard of part is supported with terminal unit mates, and is to mismatch in judged result
When, send, to cloud transcoding service equipment 30, the decoding capability comprising terminal unit and the multimedia file transcoding of the network bandwidth please
Ask；
Video server 20, is additionally operable to send the url address of multimedia file after transcoding to terminal unit 10；
Cloud transcoding service equipment 30, for receiving the multimedia file transcoding request of video server 20 transmission, to many matchmakers
Body file carries out transcoding, and the multimedia file after transcoding is sent to terminal unit 10；
The system that the embodiment of the present invention 1 multimedia file is play further includes: bandwidth detection equipment, for after transcoding
In multimedia file playing process, bandwidth between detection terminal equipment and video server, and broadcast according to testing result adjustment
Put the bandwidth of multimedia file use；
Bandwidth detection equipment can be integrated in inside terminal unit and video server respectively or deposit as independent equipment
?.
In the present embodiment, the multimedia file after described broadcasting transcoding can be that terminal unit 10 is directly play；Can also
Play using special display device, decoded result is sent to by display device by terminal unit 10, is play by display device.
The method that the embodiment of the present invention 2 multimedia file is play implement flow process as shown in figure 5, in the present embodiment,
The decoding capability of itself and bandwidth attribute are sent to video server by terminal unit, comprise the following steps:
Step 501, terminal unit sends itself decoding capability and bandwidth attribute to video server and asks video to take
Business.
Step 502～503, video server judges encoding and decoding consensus standard and the terminal unit support of multimedia file
Whether encoding and decoding consensus standard mates, and when judged result is coupling, video server directly provides what terminal unit asked to regard
Be taken in small doses at short intervals business, and terminal unit decodes and play multimedia file, terminates currently processed flow process；When judged result is to mismatch, execution
Step 504.
Step 504, video server sends encoding and decoding consensus standard and the terminal unit of multimedia file to terminal unit
The url address of data after the unmatched judged result of encoding and decoding consensus standard supported and transcoding.
Step 505, terminal unit sends the request of multimedia file transcoding to cloud transcoding service equipment；
Specifically, when terminal unit is to cloud transcoding service equipment request transcoding, terminal is provided to set to cloud transcoding service equipment
The url address of data after standby decoding capability, bandwidth attribute and transcoding.
Step 506, after cloud transcoding service equipment receives the request of multimedia file transcoding, carries out transcoding to multimedia file,
And send the multimedia file after transcoding to terminal unit；
Specifically, cloud transcoding service equipment obtains multimedia file from video server, according to the decoding energy of terminal unit
Power, bandwidth attribute and the calculated transcoding parameter of video data parameter, carry out transcoding to multimedia file, and to terminal unit
Send the multimedia file after transcoding；
Here, when the network bandwidth of terminal unit is low, suitably reduce the resolution of multimedia file, high using compression ratio
Transcoding parameter it is ensured that the low terminal unit of the network bandwidth is capable of smooth broadcasting multimedia file；Network when terminal unit
When bandwidth is sufficient, using the low transcoding parameter of compression ratio it is ensured that while smooth playing multimedia file, reducing the mistake of image
Very.
Step 507, the multimedia file after terminal unit acquisition transcoding simultaneously decodes broadcasting.
After step 507, the method for the embodiment of the present invention 2 also includes step 508: after transcoding, multimedia file is play
During, bandwidth between detection terminal equipment and cloud transcoding service equipment, and play according to bandwidth detection result real-time adjustment
The bandwidth that multimedia file uses；
Here, detection bandwidth can be completed by bandwidth detection equipment；Bandwidth detection equipment can be integrated in respectively terminal unit and
Inside cloud transcoding service equipment, or exist as independent equipment；
Specifically, real network bandwidth is detected to wish to play the bandwidth using during video less than user setup, increase sets
The bandwidth put；Or ignore the bandwidth of user setup, using the bandwidth match of the actual network bandwidth and user setup, prevent user
When the band of setting is wider than the bandwidth of reality, occur because the parameter of transmission mistake leads to video playback abnormal situation；
Real network band is detected and be wider than the bandwidth that user setup wishes to use during broadcasting video, reduce the band of setting
Width, makes the bandwidth match of real network bandwidth value and user setup, so that unnecessary net when effectively utilizes multimedia file is play
Network bandwidth.
After the bandwidth of adjustment setting, the embodiment of the present invention 2 method for broadcasting multimedia file implements flow process such as Fig. 6 institute
Show, comprise the following steps:
Step 601, terminal unit sends, to video server, the bandwidth that user updates.
Step 602, transcoding parameter readjusted by transcoding service equipment；
Specifically, described transcoding parameter of readjusting is code check and the frame per second adjusting transcoding parameter, cloud transcoding service equipment
Can need to select image sharpness (code check) priority principle or picture fluency (frame per second) priority principle according to user；Select
During image sharpness priority principle, then the bandwidth to mate setting for the code check of adjustment multimedia parameter；Select picture fluency excellent
During first principle, then the frame per second by adjusting multimedia parameter mates the bandwidth of setting.
Step 603～604, process operation is identical with step 506～507, repeats no more here..
For realizing the method that above-mentioned multimedia file is play, the embodiment of the present invention additionally provides a kind of multimedia file and plays
System, as shown in figure 5, this system includes: terminal unit 10, video server 20 and cloud transcoding service equipment 30；Wherein,
Terminal unit 10, for sending itself decoding capability and the network bandwidth to video server 20 and asking video to take
Business；Receive the multimedia file after transcoding and decode broadcasting；
Terminal unit 10, is additionally operable to receive the encoding and decoding that the encoding and decoding consensus standard of multimedia file is supported with terminal unit
The url address of data after the unmatched judged result of consensus standard and transcoding；Send to cloud transcoding service equipment 30 and comprise terminal
The multimedia file transcoding request of the url address of data after the decoding capability of equipment, bandwidth attribute and transcoding；
Video server 20, the decoding capability sending for receiving terminal apparatus 10 and bandwidth attribute；Judge multimedia literary composition
Whether the encoding and decoding consensus standard that the encoding and decoding consensus standard of part is supported with terminal unit mates, and is to mismatch in judged result
When, the url address of data after matching result and transcoding is sent to terminal unit 10；
Cloud transcoding service equipment 30, for receiving the multimedia file transcoding request of video server 20 transmission, to many matchmakers
Body file transcoding, and the multimedia file after transcoding is sent to terminal unit 10；
The system that the embodiment of the present invention 2 multimedia file is play further includes: bandwidth detection equipment, for after transcoding
In multimedia file playing process, bandwidth between detection terminal equipment and cloud transcoding service equipment, and adjusted according to testing result
The whole bandwidth playing multimedia file use；
Bandwidth detection equipment can be integrated in inside terminal unit and cloud transcoding service equipment or as independent equipment respectively
Exist.
In the present embodiment, the multimedia file after described broadcasting transcoding can be that terminal unit 10 is directly play；Can also
Play using special display device, decoded result is sent to by display device by terminal unit 10, is play by display device.
The embodiment of the present invention provides a kind of composition structure of cloud transcoding service equipment to show as shown in Figure 8, comprising: data receiver
Module 81, parameter matching computation module 82, transcoding module 83 and release module 84；Wherein,
Data reception module 81, for receiving decoding capability and the bandwidth attribute of multimedia file data and terminal unit；
Parameter matching computation module 82, for the decoding capability of the terminal unit according to acquisition, bandwidth attribute and video counts
Calculate transcoding parameter according to parameter；
Transcoding module 83, for carrying out transcoding according to described transcoding parameter to multimedia file；
Release module 84, for issuing the multimedia file data after transcoding.
Above-mentioned data reception module 81, the function of parameter matching computation module 82, transcoding module 83 and release module 84 exist
In practical application, can be by the central processing unit (cpu) in cloud transcoding service equipment or microprocessor (mpu) or digital signal
Reason device (dsp) or programmable gate array (fpga) complete.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
Claims (7)
1. a kind of method that multimedia file is play is it is characterised in that methods described includes:
Terminal unit sends itself decoding capability and bandwidth attribute to video server and asks Video service；Set according to terminal
Standby decoding capability and bandwidth attribute determination need to carry out after transcoding to multimedia file, and cloud transcoding service equipment sets according to terminal
The video data parameter of standby decoding capability, bandwidth attribute and described Video service carries out transcoding to multimedia file, and to end
End equipment sends multimedia file after transcoding；Terminal unit decodes to multimedia file after transcoding and plays；
Wherein, cloud transcoding service equipment carries out transcoding to multimedia file and includes: cloud transcoding service equipment obtains from video server
Take multimedia file, transcoding parameter, root are calculated according to the decoding capability of terminal unit, bandwidth attribute and video data parameter
According to transcoding parameter, transcoding is carried out to multimedia file；
In multimedia file playing process after transcoding, detection terminal equipment and cloud transcoding service equipment or terminal unit and video
Bandwidth between server, and the bandwidth playing multimedia file use is adjusted according to testing result.
2. the method that multimedia file is play according to claim 1 is it is characterised in that described terminal unit is by the solution of itself
Code ability and bandwidth attribute are sent to video server；
The described decoding capability according to terminal unit and bandwidth attribute determine to be needed to carry out transcoding to multimedia file to include: described
After video server receives decoding capability and the bandwidth attribute of terminal unit transmission, judge the encoding and decoding agreement of multimedia file
Whether the encoding and decoding consensus standard that standard is supported with terminal unit mates, and when judged result is to mismatch, determines and needs to many matchmakers
Body file carries out transcoding, and video server sends the request of multimedia file transcoding to cloud transcoding service equipment.
3. the method that multimedia file is play according to claim 1 is it is characterised in that described terminal unit is by the solution of itself
Code ability and bandwidth attribute are sent to video server；
The described decoding capability according to terminal unit and bandwidth attribute determine to be needed to carry out transcoding to multimedia file to include: described
After video server receives decoding capability and the bandwidth attribute of terminal unit transmission, judge the encoding and decoding agreement of multimedia file
Whether the encoding and decoding consensus standard that standard is supported with terminal unit mates, and when judged result is to mismatch, determines and needs to many matchmakers
Body file carries out transcoding；Described video server notifies described terminal unit, and described terminal unit sets to described cloud transcoding service
Preparation send multimedia file transcoding to ask.
4. a kind of cloud transcoding service equipment is it is characterised in that described cloud transcoding service equipment includes: data reception module, parameter
Matching primitives module, transcoding module and release module；Wherein,
Data reception module, for receiving decoding capability and the bandwidth attribute of multimedia file data and terminal unit；
Parameter matching computation module, for the decoding capability of the terminal unit according to acquisition, bandwidth attribute and video data parameter
Calculate transcoding parameter；
Transcoding module, for carrying out transcoding according to described transcoding parameter to multimedia file；
Release module, for issuing the multimedia file data after transcoding.
5. a kind of multimedia file playing system is it is characterised in that described system includes: terminal unit, video server and cloud
Transcoding service equipment；Wherein,
Terminal unit, for sending itself decoding capability and the network bandwidth and asking Video service；Receive the many matchmakers after transcoding
Body file decoding is simultaneously play；
Video server, determines the need for multimedia file is entered for the decoding capability according to terminal unit and bandwidth attribute
Row transcoding, and send the request of multimedia file transcoding to cloud transcoding service equipment；Or receive the multimedia of cloud transcoding service equipment
File transcoding solicited message, provides multimedia file to cloud transcoding service equipment；
Cloud transcoding service equipment, for the video counts of decoding capability, bandwidth attribute and described Video service according to terminal unit
According to parameter, transcoding is carried out to multimedia file, and the multimedia file after transcoding is sent to terminal unit；
Described cloud transcoding service equipment, specifically for obtaining multimedia file from video server, according to the decoding of terminal unit
Ability, bandwidth attribute and video data parameter are calculated transcoding parameter, carry out transcoding according to transcoding parameter to multimedia file.
Bandwidth detection equipment, for, in multimedia file playing process after transcoding, detection terminal equipment is set with cloud transcoding service
Bandwidth between standby or terminal unit and video server, and adjusted according to testing result and play the band that multimedia file uses
Wide.
6. according to claim 5 multimedia file playing system it is characterised in that
Described terminal unit, for being sent to video server by the decoding capability of itself, bandwidth attribute；
Described video server, the decoding capability sending for receiving terminal apparatus and bandwidth attribute, judge multimedia file
Whether the encoding and decoding consensus standard that encoding and decoding consensus standard is supported with terminal unit mates, and when judged result is to mismatch,
Determining needs to carry out transcoding to multimedia file, sends the request of multimedia file transcoding to cloud transcoding service equipment；
Described cloud transcoding service equipment, is additionally operable to receive the request of multimedia file transcoding.
7. according to claim 5 multimedia file playing system it is characterised in that
Described terminal unit, for being sent to video server by the decoding capability of itself, bandwidth attribute；It is additionally operable to receive video
The notice that server sends, and send the request of multimedia file transcoding to described cloud transcoding service equipment；
Described video server, the decoding capability sending for receiving terminal apparatus and bandwidth attribute, judge multimedia file
Whether the encoding and decoding consensus standard that encoding and decoding consensus standard is supported with terminal unit mates, and when judged result is to mismatch,
Determine and need multimedia file is carried out transcoding, notify terminal unit；
Described cloud transcoding service equipment, is additionally operable to receive the request of multimedia file transcoding.
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| CN201310470406.1A CN103561279B (en) | 2013-10-10 | 2013-10-10 | Method and system for playing multi-media file and cloud transcoding service device |
| PCT/CN2014/088298 WO2015051755A1 (en) | 2013-10-10 | 2014-10-10 | Multimedia file playing method and system, cloud transcoding server device and storage medium |
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| CN201310470406.1A CN103561279B (en) | 2013-10-10 | 2013-10-10 | Method and system for playing multi-media file and cloud transcoding service device |
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| WO2015051755A1 (en) | 2015-04-16 |
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