Microsoft MPEG-4: Difference between revisions
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* | * FourCCs: MP43, DIV3, WMV7, WMV8, AP41 | ||
* Company: [[Microsoft]] | * Company: [[Microsoft]] | ||
* Technical Description: [http://www1.mplayerhq.hu/~michael/msmpeg4.txt http://www1.mplayerhq.hu/~michael/msmpeg4.txt] | * Technical Description: [http://www1.mplayerhq.hu/~michael/msmpeg4.txt http://www1.mplayerhq.hu/~michael/msmpeg4.txt] | ||
* Samples: | |||
** AngelPotion variation: [http://www.mplayerhq.hu/MPlayer/samples/V-codecs/AP41/ http://www.mplayerhq.hu/MPlayer/samples/V-codecs/AP41/] | |||
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: | 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: | ||
Revision as of 22:50, 15 March 2006
- FourCCs: MP43, DIV3, WMV7, WMV8, AP41
- Company: Microsoft
- Technical Description: http://www1.mplayerhq.hu/~michael/msmpeg4.txt
- Samples:
- AngelPotion variation: http://www.mplayerhq.hu/MPlayer/samples/V-codecs/AP41/
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 is missing one coding mode sometimes referred to as J-type frames, an alternate type of I-frames in the coding scheme.