CN112532991A - Hardware decoding method for RMFF format file - Google Patents
Hardware decoding method for RMFF format file Download PDFInfo
- Publication number
- CN112532991A CN112532991A CN202011169288.7A CN202011169288A CN112532991A CN 112532991 A CN112532991 A CN 112532991A CN 202011169288 A CN202011169288 A CN 202011169288A CN 112532991 A CN112532991 A CN 112532991A
- Authority
- CN
- China
- Prior art keywords
- information
- file
- decoding
- frame
- video
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- WAXHXZWOUQTVQZ-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-n-propylpropan-2-amine;hydrochloride Chemical compound Cl.CCCNC(C)CC1=CC=C2OCOC2=C1 WAXHXZWOUQTVQZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 abstract description 5
- 230000003139 buffering effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
-
- 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
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/43—Hardware specially adapted for motion estimation or compensation
-
- 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
- H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention relates to the technical field of video processing, and provides a hardware decoding method for an RMFF format file, which is characterized in that at the beginning of decoding, decoding information of a target decoding file is acquired in advance, decoding parameters of a register of a related hard decoder are configured, namely the hard decoder is initialized in advance according to the characteristics of the target decoding file; and then, obtaining an original AVpacket file after demultiplexing the target decoding file and before decoding, analyzing to obtain a corresponding AVStream video stream, performing data analysis on each frame of video frame, further obtaining detailed frame information of each video frame, and directly analyzing by a hard decoder to obtain a corresponding video image, so that a CPU (central processing unit) can be released from heavy decoding operation, and the running smoothness and the playing compatibility of the system are further improved.
Description
Technical Field
The invention relates to the technical field of video processing, in particular to a hardware decoding method for RMFF format files.
Background
The rmff (real media File format) format is a File packaging format invented by real media corporation, and is currently decoded by using a soft decoding method.
Soft decoding is literally understood to be decoding in software. But in practice hardware support is required. This hardware is the CPU. In the soft decoding process, a large amount of video information needs to be calculated, so that the requirement on the performance of a CPU is very high. Especially for high-definition large-code-rate videos, the problems of low conversion efficiency, high heat productivity and the like are caused by huge calculation amount.
However, since the compression rate of the video in the RMFF format is very high, when the video in the RMVB format is decoded by soft decoding, the data calculation amount of the CPU is much larger than that of other formats, and when the video in the RMVB format with high definition (equal to or exceeding 720P) is encountered, the decoding calculation workload of the CPU is increased by times, which causes the pause phenomenon of the played video.
Disclosure of Invention
The invention provides a hardware decoding method acting on a file with an RMFF format, which solves the technical problem.
In order to solve the above technical problems, the present invention provides a hardware decoding method for RMFF format files, comprising the steps of:
s1, reading the target decoding file and acquiring corresponding decoding information;
s2, configuring the decoding parameters of the register of the hard decoder according to the decoding information;
s3, reading an original AVpacket file in the target decoding file, analyzing an AVStream video stream in the original AVpacket file, and acquiring frame information of all video frames;
and S4, the hard decoder acquires the frame information, decodes the frame information and outputs a video image.
In the basic scheme, at the beginning of decoding, decoding information of a target decoding file is acquired in advance, decoding parameters of a register of a related hard decoder are configured, namely the hard decoder is initialized in advance according to the characteristics of the target decoding file; and then, obtaining an original AVpacket file after demultiplexing the target decoding file and before decoding, analyzing to obtain a corresponding AVStream video stream, performing data analysis on each frame of video frame, further obtaining detailed frame information of each video frame, and directly analyzing by a hard decoder to obtain a corresponding video image, so that a CPU (central processing unit) can be released from heavy decoding operation, and the running smoothness and the playing compatibility of the system are further improved.
In a further embodiment, in the step S1, the acquiring corresponding decoding information includes: and reading the information length, the PROP information, the MDPR information and the version of the current RV video coding format of the target decoding file through a parser.
In further embodiments, the step S2 includes:
s21, storing the decoding information into a configuration buffer of a hard decoder;
and S22, controlling the hard decoder to configure the decoding parameters of the corresponding register according to the decoding information.
In a further embodiment, in the step S3, the acquiring the frame information of all the video frames comprises:
s31, sequentially acquiring the total number of slices in each video frame and caching the slices in a temporary data cache region;
s32, sequentially acquiring the serial number of each Slice and the offset position of the Slice in the corresponding video frame, and caching the serial number and the offset position in the temporary data cache region;
and S33, acquiring the corresponding coded content of the video frame according to the offset position, and caching the coded content in the temporary data cache region.
According to the scheme, the minimum unit Slice (Slice) forming the video frames in the RMFF format is used as a basic analysis unit, the total number of slices, the serial number, the offset position and the coding content of each Slice are sequentially obtained according to each video frame, and data analysis can be performed in a targeted manner, so that the data are comprehensive, detailed and accurate.
In further embodiments, the step S4 includes:
s41, writing the frame information in the temporary data buffer area into a frame data buffer area of the hard decoder;
and S42, the hard decoder decodes the frame information and outputs a video image.
In a further embodiment, in the step S31, the sequentially acquiring the total number of slices in each of the video frames includes:
directly reading the AVCodecContext in the avcodec.h file corresponding to the video frame to obtain the total number of the Slice;
or reading data of the 2 nd byte from the starting position of the cache in the AVCodecContext, wherein the value of the data is the total number of the Slice.
In a further embodiment, in the step S32, the offset position is obtained in the following manner,
directly reading the AVCodecContext in the avcodec.h file corresponding to the video frame, and acquiring the offset position of the Slice in the corresponding video frame;
or reading the offset position of n × 8-4 after the cache start position in the AVCodecContext:
if the Offset position is 1, reading according to the small-end data mode, that is, the Offset value Offset is AV _ RL32(buf + n 8);
otherwise, read in the big-end data mode, i.e., Offset is AV _ RB32(buf + n × 8):
wherein n is the current index ID of slice, AV _ RL32 represents the 32-bit integer value calculated according to the small-end data mode, and AV _ RB32 represents the 32-bit integer value calculated according to the large-end data mode.
In a further implementation, in the step S33, the obtaining the encoded content of the corresponding video frame according to the offset position includes:
s331, acquiring corresponding SliceInfo information according to the offset position;
s332, acquiring the corresponding slice type, frame width and height information according to the SliceInfo information.
According to the scheme, two paths of acquisition means are preset for acquiring Slice frame information, firstly, related information is directly read from AVCodecContext, and the acquisition means is simple and convenient; and secondly, sequentially calculating the total number of slices and the value of the offset position according to the cache data in the AVCodecContext file, and further acquiring the offset value according to the value of the offset position value to obtain the actual offset position, wherein the data acquired by the acquiring means is detailed and accurate. The two ways of acquisition means are mutually assisted, and the stability of data acquisition is guaranteed.
In further embodiments, in said step S1:
the target decoding file is a RMFF format file;
the parser is an FFMPEG parser or a MediaPlayerExtractor parser.
In the step S2: the register is a Config register.
Drawings
Fig. 1 is a flowchart of a hardware decoding method applied to an RMFF format file according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which are given solely for the purpose of illustration and are not to be construed as limitations of the invention, including the drawings which are incorporated herein by reference and for illustration only and are not to be construed as limitations of the invention, since many variations thereof are possible without departing from the spirit and scope of the invention.
As shown in fig. 1, the hardware decoding method applied to the RMFF format file according to the embodiment of the present invention includes steps S1 to S4:
and S1, reading the target decoding file and acquiring corresponding decoding information.
The target decoding file is a file in an RMFF format, and when the header information of the file is identified to contain a character of RMF, the file format is indicated to be in the RMFF format.
Acquiring the corresponding decoding information includes: and reading the information length, the PROP information, the MDPR information and the version of the current RV video coding format of the target decoding file through a parser.
Wherein, PROP is used to describe the conventional attributes of RealMedia files; MDPR is information for describing attributes of RealMedia streams.
S2, configuring the decoding parameters of the register of the hard decoder according to the decoding information, including steps S21-S22:
s21, storing the decoding information into the configuration buffer area of the hard decoder;
and S22, controlling the hard decoder to configure the decoding parameters of the corresponding register according to the decoding information.
Wherein, the register is a Config register.
S3, reading an original AVpacket file in the target decoding file, and analyzing an AVStream video stream in the original AVpacket file through a parser to obtain frame information of all video frames.
Wherein the acquiring of the frame information of all the video frames comprises:
and S31, sequentially acquiring the total number of slices in each video frame and buffering the slices in a temporary data buffer area.
Wherein, the sequentially obtaining the total number of slices in each video frame comprises:
directly reading the AVCodecContext in the avcodec.h file corresponding to the video frame to obtain the total number of slices; and a variable Slice _ count in the AVCodecContext records the number of slices, and the variable Slice _ count can be directly read, and if the read value is 0, the variable does not record the number of slices.
Or reading the data of the 2 nd byte from the starting position of the cache in the AVCodecContext, wherein the value of the data is the total number of slices.
And S32, sequentially acquiring the serial number of each Slice and the offset position of each Slice in the corresponding video frame, and buffering the serial number and the offset position to a temporary data buffer area.
Wherein, the offset position is obtained in the following manner,
directly reading the AVCodecContext in the avcodec.h file corresponding to the video frame, and acquiring the offset position of Slice in the corresponding video frame;
or reading the offset position of n × 8-4 after the cache start position in the AVCodecContext:
if the Offset position is 1, reading the Offset value according to the small-end data mode, i.e., the Offset value Offset is AV _ RL32(buf + n 8);
otherwise, read in the big-end data mode, i.e., Offset is AV _ RB32(buf + n × 8):
where n is the index ID of the current slice, AV _ RL32 represents the 32-bit integer value calculated according to the small-end data mode, and AV _ RB32 represents the 32-bit integer value calculated according to the large-end data mode.
Specifically, the small-end data mode means that data is stored in the direction of memory increase, i.e., the low order bits are before the high order bits, and the large-end data mode is opposite.
And S33, acquiring the coding content of the corresponding video frame according to the offset position, and buffering the coding content to the temporary data buffer area.
Wherein, acquiring the coding content of the corresponding video frame according to the offset position comprises:
s331, acquiring corresponding SliceInfo information according to the offset position;
s332, acquiring the type of the corresponding slice, the width and the height information of the frame according to the SliceInfo information.
The slice type includes an interlaced data type and a progressive data type.
In this embodiment:
the method comprises the steps of taking the minimum unit Slice (Slice) forming the video frame in the RMFF format as a basic analysis unit, sequentially obtaining the total number of slices, the serial number, the offset position and the coding content of each Slice according to each video frame, and performing data analysis in a targeted manner, so that data is comprehensive, detailed and accurate.
Two paths of acquisition means are preset for acquiring Slice frame information, firstly, related information is directly read from AVCodecContext, and the acquisition means is simple and convenient; and secondly, sequentially calculating the total number of slices and the value of the offset position according to the cache data in the AVCodecContext file, and further acquiring the offset value according to the value of the offset position value to obtain the actual offset position, wherein the data acquired by the acquiring means is detailed and accurate. The two ways of acquisition means are mutually assisted, and the stability of data acquisition is guaranteed.
S4, the hard decoder obtains the frame information to decode and then outputs the video image, including the steps S41-S42:
s41, writing the frame information in the temporary data buffer area into a frame data buffer area of a hard decoder;
and S42, decoding the frame information by the hard decoder and outputting a video image.
In this embodiment, the parser includes, but is not limited to, an FFMPEG parser, a MediaPlayerExtractor parser.
At the beginning of decoding, the embodiment of the invention acquires the decoding information of a target decoding file in advance, configures the decoding parameters of a register of a relevant hard decoder, namely initializes the hard decoder in advance according to the characteristics of the target decoding file; and then, obtaining an original AVpacket file after demultiplexing the target decoding file and before decoding, analyzing to obtain a corresponding AVStream video stream, performing data analysis on each frame of video frame, further obtaining detailed frame information of each video frame, and directly analyzing by a hard decoder to obtain a corresponding video image, so that a CPU (central processing unit) can be released from heavy decoding operation, and the running smoothness and the playing compatibility of the system are further improved.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A hardware decoding method for a RMFF format file, comprising the steps of:
s1, reading the target decoding file and acquiring corresponding decoding information;
s2, configuring the decoding parameters of the register of the hard decoder according to the decoding information;
s3, reading an original AVpacket file in the target decoding file, analyzing an AVStream video stream in the original AVpacket file, and acquiring frame information of all video frames;
and S4, the hard decoder acquires the frame information, decodes the frame information and outputs a video image.
2. The hardware decoding method applied to the RMFF format file as claimed in claim 1, wherein in the step S1, the obtaining of the corresponding decoding information comprises: and reading the information length, the PROP information, the MDPR information and the version of the current RV video coding format of the target decoding file through a parser.
3. The hardware decoding method for RMFF-formatted files according to claim 1, wherein the step S2 comprises:
s21, storing the decoding information into a configuration buffer of a hard decoder;
and S22, controlling the hard decoder to configure the decoding parameters of the corresponding register according to the decoding information.
4. The hardware decoding method applied to the RMFF-format file as claimed in claim 1, wherein the acquiring of the frame information of all the video frames in step S3 comprises:
s31, sequentially acquiring the total number of slices in each video frame and caching the slices in a temporary data cache region;
s32, sequentially acquiring the serial number of each Slice and the offset position of the Slice in the corresponding video frame, and caching the serial number and the offset position in the temporary data cache region;
and S33, acquiring the corresponding coded content of the video frame according to the offset position, and caching the coded content in the temporary data cache region.
5. The hardware decoding method for RMFF-formatted files according to claim 4, wherein the step S4 comprises:
s41, writing the frame information in the temporary data buffer area into a frame data buffer area of the hard decoder;
and S42, the hard decoder decodes the frame information and outputs a video image.
6. The hardware decoding method as claimed in claim 4, wherein in said step S31, said sequentially obtaining the total number of slices in each of said video frames comprises:
directly reading the AVCodecContext in the avcodec.h file corresponding to the video frame to obtain the total number of the Slice;
or reading data of the 2 nd byte from the starting position of the cache in the AVCodecContext, wherein the value of the data is the total number of the Slice.
7. The hardware decoding method for an RMFF format file according to claim 4, wherein in said step S32, said offset position is obtained as follows,
directly reading the AVCodecContext in the avcodec.h file corresponding to the video frame, and acquiring the offset position of the Slice in the corresponding video frame;
or reading the offset position of n × 8-4 after the cache start position in the AVCodecContext:
if the Offset position is 1, reading according to the small-end data mode, that is, the Offset value Offset is AV _ RL32(buf + n 8);
otherwise, read in the big-end data mode, i.e., Offset is AV _ RB32(buf + n × 8):
wherein n is the current index ID of slice, AV _ RL32 represents the 32-bit integer value calculated according to the small-end data mode, and AV _ RB32 represents the 32-bit integer value calculated according to the large-end data mode.
8. The hardware decoding method as claimed in claim 4, wherein in said step S33, said obtaining the corresponding encoded content of said video frame according to said offset position comprises:
s331, acquiring corresponding SliceInfo information according to the offset position;
s332, acquiring the corresponding slice type, frame width and height information according to the SliceInfo information.
9. The hardware decoding method for RMFF-formatted files according to claim 2, wherein in said step S1:
the target decoding file is a RMFF format file;
the parser is an FFMPEG parser or a MediaPlayerExtractor parser.
10. The hardware decoding method for RMFF-formatted files according to claim 1, wherein in said step S2: the register is a Config register.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011169288.7A CN112532991B (en) | 2020-10-28 | 2020-10-28 | Hardware decoding method for RMFF format file |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011169288.7A CN112532991B (en) | 2020-10-28 | 2020-10-28 | Hardware decoding method for RMFF format file |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112532991A true CN112532991A (en) | 2021-03-19 |
| CN112532991B CN112532991B (en) | 2023-04-14 |
Family
ID=74979008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011169288.7A Active CN112532991B (en) | 2020-10-28 | 2020-10-28 | Hardware decoding method for RMFF format file |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112532991B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113645467A (en) * | 2021-06-23 | 2021-11-12 | 天津津航计算技术研究所 | Soft and hard combined video decoding method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070133692A1 (en) * | 2005-12-09 | 2007-06-14 | Reddy Harikrishna M | Hardware multi-stream multi-standard video decoder device |
| CN101212679A (en) * | 2006-12-30 | 2008-07-02 | 凌阳科技股份有限公司 | AV synchronization method and device for switching multi-channel audio streams during playing of AVI files |
| CN101237575A (en) * | 2007-01-30 | 2008-08-06 | 夏新电子股份有限公司 | A TV and method for playing Real format stream media |
| CN102811380A (en) * | 2011-06-03 | 2012-12-05 | 三星电子（中国）研发中心 | Demultiplexing method and demultiplexing device for audio and video data in multimedia files |
| CN105898496A (en) * | 2015-11-18 | 2016-08-24 | 乐视网信息技术（北京）股份有限公司 | HLS stream hardware decoding method based on Android device and device |
| CN106339249A (en) * | 2016-08-23 | 2017-01-18 | 上海创景计算机系统有限公司 | Dynamical allocation and programming method |
| CN110662084A (en) * | 2019-10-15 | 2020-01-07 | 北京齐尔布莱特科技有限公司 | MP4 file stream live broadcasting method, mobile terminal and storage medium |
-
2020
- 2020-10-28 CN CN202011169288.7A patent/CN112532991B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070133692A1 (en) * | 2005-12-09 | 2007-06-14 | Reddy Harikrishna M | Hardware multi-stream multi-standard video decoder device |
| CN101212679A (en) * | 2006-12-30 | 2008-07-02 | 凌阳科技股份有限公司 | AV synchronization method and device for switching multi-channel audio streams during playing of AVI files |
| CN101237575A (en) * | 2007-01-30 | 2008-08-06 | 夏新电子股份有限公司 | A TV and method for playing Real format stream media |
| CN102811380A (en) * | 2011-06-03 | 2012-12-05 | 三星电子（中国）研发中心 | Demultiplexing method and demultiplexing device for audio and video data in multimedia files |
| CN105898496A (en) * | 2015-11-18 | 2016-08-24 | 乐视网信息技术（北京）股份有限公司 | HLS stream hardware decoding method based on Android device and device |
| CN106339249A (en) * | 2016-08-23 | 2017-01-18 | 上海创景计算机系统有限公司 | Dynamical allocation and programming method |
| CN110662084A (en) * | 2019-10-15 | 2020-01-07 | 北京齐尔布莱特科技有限公司 | MP4 file stream live broadcasting method, mobile terminal and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 罗锐: "基于Blackfin平台的嵌入式播放器的研究与实现", 《信息科技辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113645467A (en) * | 2021-06-23 | 2021-11-12 | 天津津航计算技术研究所 | Soft and hard combined video decoding method |
| CN113645467B (en) * | 2021-06-23 | 2024-04-23 | 天津津航计算技术研究所 | Soft and hard combined video decoding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112532991B (en) | 2023-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7725593B2 (en) | Scalable video coding (SVC) file format | |
| TWI643502B (en) | Content reproduction system, content reproduction apparatus, program, content reproduction method, and providing content server | |
| US10819994B2 (en) | Image encoding and decoding methods and devices thereof | |
| Quinlan et al. | Datasets for AVC (H. 264) and HEVC (H. 265) evaluation of dynamic adaptive streaming over HTTP (DASH) | |
| CN109168083B (en) | Streaming media real-time playing method and device | |
| CN1295932C (en) | Transcoder and imaging apparatus for converting an encoding system of video signal | |
| CN113596518B (en) | Video access method for improving double-speed playing performance | |
| US20140204107A1 (en) | Video processor with frame buffer compression and methods for use therewith | |
| CN110830838A (en) | Security protection high-definition video reverse broadcasting method and device | |
| JP5156655B2 (en) | Image processing device | |
| US7421129B2 (en) | Image compression and synthesis for video effects | |
| CN112653904B (en) | Rapid video clipping method based on PTS and DTS modification | |
| US20100098161A1 (en) | Video encoding apparatus and video encoding method | |
| JP5170708B2 (en) | Moving picture stream processing method and apparatus, moving picture reproduction apparatus and moving picture distribution apparatus using the same | |
| CN112532991B (en) | Hardware decoding method for RMFF format file | |
| CN114363648A (en) | Method, equipment and storage medium for audio and video alignment in mixed flow process of live broadcast system | |
| US9712848B2 (en) | Frame buffer compression using separate aggregation of fixed-length and variable-length components of codewords | |
| US20240040147A1 (en) | Data processing method and apparatus, computer device, and storage medium | |
| WO2024098836A1 (en) | Video alignment method and apparatus | |
| CN112437325A (en) | 8KSDI signal generator implementation method | |
| JP2008271546A (en) | Decoding device and decoding method, and information processing apparatus and information processing method | |
| CN113873176B (en) | Media file merging method and device | |
| US20140205017A1 (en) | Video processor with reduced memory bandwidth and methods for use therewith | |
| US7664373B2 (en) | Program, data processing method, and system of same | |
| JP4589709B2 (en) | Video playback device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |