Besides VC- 1 and H.264, there are other high-definition codes. What do they mean?

The most commonly used encoding formats for high-definition video are MPEG-2-TS, WMV-HD, H.264 and VC- 1, among which MPEG-2 has been basically eliminated because of its small compression ratio and large video space. At present, the WMV-HD promoted by Microsoft has been gradually replaced by the new standard VC- 1, and there are few videos using this algorithm in the latest HD sources. So at present, the most popular coding methods are only H.264 and VC- 1. H.264 H.264 is a high compression digital video coding and decoding standard proposed by Joint Video Group (JVT) composed of ITU-T Video Coding Expert Group (VCEG) and ISO/IEC Moving Picture Expert Group (MPEG). H.264 standard of ITU-T and ISO/iempeg-4 Part 10 (formally known as ISO/IEC 14496- 10) are the same in coding and decoding technology, which is also called AVC, that is, advanced video coding. H.264 is one of ITU-T standards named after H.26x series, and AVC is the name of ISO/IEC MPEG. This standard is usually called H.264/AVC (or AVC/H.264 or H.264/MPEG-4 AVC or MPEG-4/H.264 AVC), which clearly indicates its two developers. This standard originated from the development of ITU-T project and is called H.26L. Although the name H.26L is not common, it has been used all the time. Sometimes this standard is also called "JVT codec" because it was developed by JVT organization (it is not unprecedented for two organizations to jointly develop the same standard, and the previous video coding standard MPEG-2 was also jointly developed by MPEG and ITU-T-so MPEG-2 is called H.262 in ITU-T naming specification). Generally speaking, the suffix of H.264 format is ".avi". Mkv "and" ts”。 VC- 1 It was not until the beginning of last year that the Society of Motion Picture and Television Engineers (SMPTE) officially promulgated the video coding standard VC- 1 proposed and developed by Microsoft, paving the way for the application of this format in the next generation of DVD. After VC- 1 is promulgated as a standard, SMPTE will still charge a license fee, and Microsoft can get a certain commission from the patent. Microsoft submitted the VC- 1 encoding format (development code Corona) in September 2003, which has been adopted by many companies such as MovieBeam and Modeo, including HD DVD and Blu-ray, including Warner and Universal. VC- 1 Based on Microsoft Windows Media Video 9(WMV9) format, WMV9 format has now become the actual implementation part of VC- 1 standard. VC- 1 is the last recognized high-definition coding format, but because of the background of Microsoft, this coding format can not be ignored. Compared with MPEG2-2, the compression ratio of VC- 1 is higher, but compared with H.264, the computation of encoding and decoding is slightly less. At present, VC- 1 may be a good balance, and with the support of Microsoft, it should be a force to be reckoned with. Generally speaking, VC- 1 is in the majority. " Wmv "suffix, but this is not absolute, and the specific encoding format still needs software query. Generally speaking, the compression ratio of H.264 is higher than that of VC- 1, that is, for the same video, the video capacity compressed by H.264 coding algorithm is smaller than that of VC- 1, but the decoding calculation of VC- 1 format video is smaller, and general high-definition video can be watched smoothly through high-performance CPU. I believe this is also the main reason why NVIDIA Geforce 8 series graphics cards can't completely decode VC- 1 video.