Microsoft MPEG-4: Difference between revisions

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* FourCCs: MP43, DIV3, WMV7, WMV8, AP41, COL1
* FourCCs: MPG4, MP41, MP42, MP43, DIV3, WMV7, WMV8, AP41, COL1
* Company: [[Microsoft]]
* Company: [[Microsoft]]
* Technical Description: [http://www1.mplayerhq.hu/~michael/msmpeg4.txt http://www1.mplayerhq.hu/~michael/msmpeg4.txt]
* Technical Description: http://ffmpeg.org/~michael/msmpeg4.txt
* Samples:
* Samples:
** AngelPotion variation: [http://www.mplayerhq.hu/MPlayer/samples/V-codecs/AP41/ http://www.mplayerhq.hu/MPlayer/samples/V-codecs/AP41/]
** AngelPotion variation: [http://samples.mplayerhq.hu/V-codecs/AP41/ http://samples.mplayerhq.hu/V-codecs/AP41/]
** COL1: [http://www.mplayerhq.hu/MPlayer/samples/V-codecs/COL1/ http://www.mplayerhq.hu/MPlayer/samples/V-codecs/COL1/]
** COL1: [http://samples.mplayerhq.hu/V-codecs/COL1/ http://samples.mplayerhq.hu/V-codecs/COL1/]
** MP43: [http://www.mplayerhq.hu/MPlayer/samples/V-codecs/MP43/ http://www.mplayerhq.hu/MPlayer/samples/V-codecs/MP43/]
** MPG4: http://samples.mplayerhq.hu/testsuite/mpg4.avi
** WMV1/7: [http://www.mplayerhq.hu/MPlayer/samples/V-codecs/WMV1/ http://www.mplayerhq.hu/MPlayer/samples/V-codecs/WMV1/]
** MP43: [http://samples.mplayerhq.hu/V-codecs/MP43/ http://samples.mplayerhq.hu/V-codecs/MP43/]
** WMV2/8: [http://www.mplayerhq.hu/MPlayer/samples/V-codecs/WMV8/ http://www.mplayerhq.hu/MPlayer/samples/V-codecs/WMV8/]
** WMV1/7: [http://samples.mplayerhq.hu/V-codecs/WMV1/ http://samples.mplayerhq.hu/V-codecs/WMV1/]
** 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:
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* Microsoft Windows Media Video v2/v8 (WMV2/WMV8)
* 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.
The full line of Microsoft MPEG-4 codecs is supported by [[FFmpeg]], including [[XINTRA8]] frames.


[[Category:Incomplete Video Codecs]]
[[Category:Video Codecs]]
[[Category:Video Codecs]]
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Latest revision as of 23:50, 5 January 2013

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, including XINTRA8 frames.