Microsoft MPEG-4: Difference between revisions
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* FOURCCs: MP43, DIV3, WMV7, WMV8 | * FOURCCs: MP43, DIV3, WMV7, WMV8 | ||
* Company: [[Microsoft]] | |||
* Technical Description: [http://www1.mplayerhq.hu/~michael/msmpeg4.txt http://www1.mplayerhq.hu/~michael/msmpeg4.txt] | |||
WMV8 | The Microsoft MPEG-4 codecs are similar to the [[ISO MPEG-4]] coding standard but with various modifications to specifics such as Huffman tables and prediction methods. These are the different codecs covered under the umbrella of Microsoft's version of MPEG-4: | ||
* Microsoft MPEG-4 version 1 | |||
* Microsoft MPEG-4 version 2 | |||
* Microsoft MPEG-4 version 3 | |||
* Microsoft Windows Media Video v1/v7 (WMV7) | |||
* Microsoft Windows Media Video v2/v8 (WMV2/WMV8) | |||
The full line of Microsoft MPEG-4 codecs is supported by [[FFmpeg]] with one current caveat: WMV8 support in is missing one coding mode sometimes referred to as J-type frames, an alternate type of I-frames in the coding scheme. | |||
[[Category:Incomplete Video Codecs]] | [[Category:Incomplete Video Codecs]] | ||
[[Category:Video Codecs]] | [[Category:Video Codecs]] | ||
Revision as of 11:49, 9 February 2006
- FOURCCs: MP43, DIV3, WMV7, WMV8
- Company: Microsoft
- Technical Description: http://www1.mplayerhq.hu/~michael/msmpeg4.txt
The Microsoft MPEG-4 codecs are similar to the ISO MPEG-4 coding standard but with various modifications to specifics such as Huffman tables and prediction methods. These are the different codecs covered under the umbrella of Microsoft's version of MPEG-4:
- Microsoft MPEG-4 version 1
- Microsoft MPEG-4 version 2
- Microsoft MPEG-4 version 3
- Microsoft Windows Media Video v1/v7 (WMV7)
- Microsoft Windows Media Video v2/v8 (WMV2/WMV8)
The full line of Microsoft MPEG-4 codecs is supported by FFmpeg with one current caveat: WMV8 support in is missing one coding mode sometimes referred to as J-type frames, an alternate type of I-frames in the coding scheme.