Microsoft MPEG-4: Difference between revisions
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* 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: | * Samples: | ||
** AngelPotion variation: [http:// | ** AngelPotion variation: [http://samples.mplayerhq.hu/V-codecs/AP41/ http://samples.mplayerhq.hu/V-codecs/AP41/] | ||
** COL1: [http:// | ** COL1: [http://samples.mplayerhq.hu/V-codecs/COL1/ http://samples.mplayerhq.hu/V-codecs/COL1/] | ||
** MP43: [http:// | ** MP43: [http://samples.mplayerhq.hu/V-codecs/MP43/ http://samples.mplayerhq.hu/V-codecs/MP43/] | ||
** WMV1/7: [http:// | ** WMV1/7: [http://samples.mplayerhq.hu/V-codecs/WMV1/ http://samples.mplayerhq.hu/V-codecs/WMV1/] | ||
** WMV2/8: [http:// | ** WMV2/8: [http://samples.mplayerhq.hu/V-codecs/WMV8/ http://samples.mplayerhq.hu/V-codecs/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: | 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 13:45, 17 August 2006
- FourCCs: MP43, DIV3, WMV7, WMV8, AP41, COL1
- Company: Microsoft
- Technical Description: http://www1.mplayerhq.hu/~michael/msmpeg4.txt
- Samples:
- AngelPotion variation: http://samples.mplayerhq.hu/V-codecs/AP41/
- COL1: http://samples.mplayerhq.hu/V-codecs/COL1/
- MP43: http://samples.mplayerhq.hu/V-codecs/MP43/
- WMV1/7: http://samples.mplayerhq.hu/V-codecs/WMV1/
- WMV2/8: http://samples.mplayerhq.hu/V-codecs/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 is missing one coding mode sometimes referred to as J-type frames, an alternate type of I-frames in the coding scheme.