Difference between revisions of "AMV"

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==AMV video origin and history==
 
==AMV video origin and history==
Little is known about the history of the '''AMV''' file format other than it been  used by [http://en.wikipedia.org/wiki/Chinese_MP4/MTV_Player '''Chinese-made portable MP3 players'''] and been suposedly created to allow video playback capabilities on inexpensive and low end equipment without increasing the cost of those players with the license royalties and more processor power needed for other more complex format/codec pairs.
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Little is known about the history of the '''AMV''' file format other than it been  used by [http://en.wikipedia.org/wiki/Chinese_MP4/MTV_Player '''Chinese-made portable MP3 players'''] and been supposedly created to allow video playback capabilities on inexpensive and low end equipment without increasing the cost of those players with the license royalties and more processor power needed for other more complex format/codec pairs.
  
 
==AMV Video File Format==
 
==AMV Video File Format==
 
AMV files contain a [[RIFF]] packed stream of video ([[Talk:AMV|video codec?]]) and [[MP3]] encoded audio.
 
AMV files contain a [[RIFF]] packed stream of video ([[Talk:AMV|video codec?]]) and [[MP3]] encoded audio.
  
When playing AMV formats, there is clearly some image de/compression taking place, as can be demonstrated by a simple calculation (see the [[MTV|MTV Video Format]] article). The image compression is, however, low by modern standards (around 4 pixels/byte, compared with over 10 pixels/byte in the [[MPEG-2]] DVD-Video standard). With a resolution of 128 x 96, and a frame rate of 12 fps, a 30 minute file will be around 80 MegaByte in size.
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There is a open source decoder (written in perl) for the format at [http://svn.rot13.org/index.cgi/amv]. According to its author [http://blog.rot13.org/2007/08/amv_free_decoder_works.html], the video codec is a modified version of [[Motion JPEG]] and audio is IMA ADPCM. The decoder actually cut the files into separated jpeg files and then use the ffmpeg binary to re-encode the video in other format.
  
 
==AMV and MTV encoding/transcoding information and utilities==
 
==AMV and MTV encoding/transcoding information and utilities==
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* [http://svn.rot13.org/index.cgi/amv Open source decoder]
 
* [http://www.s1mp3.org/wiki/index.php/Video_encoding AMV encoding tips]
 
* [http://www.s1mp3.org/wiki/index.php/Video_encoding AMV encoding tips]
 
* [http://www.mympxplayer.org/tools-dc10.html www.mympxplayer.org - MP4 resource site and support forum, with MTV conversion/transcoding tools and utilies, (plus sample downloads)]
 
* [http://www.mympxplayer.org/tools-dc10.html www.mympxplayer.org - MP4 resource site and support forum, with MTV conversion/transcoding tools and utilies, (plus sample downloads)]

Revision as of 22:29, 2 September 2007

  • Extension: amv
  • Samples: [1] and [2]

AMV video origin and history

Little is known about the history of the AMV file format other than it been used by Chinese-made portable MP3 players and been supposedly created to allow video playback capabilities on inexpensive and low end equipment without increasing the cost of those players with the license royalties and more processor power needed for other more complex format/codec pairs.

AMV Video File Format

AMV files contain a RIFF packed stream of video (video codec?) and MP3 encoded audio.

There is a open source decoder (written in perl) for the format at [3]. According to its author [4], the video codec is a modified version of Motion JPEG and audio is IMA ADPCM. The decoder actually cut the files into separated jpeg files and then use the ffmpeg binary to re-encode the video in other format.

AMV and MTV encoding/transcoding information and utilities

Software players that support AMV and MTV playback

  • Unknown

Hardware players that support AMV and MTV playback

Chinese-made portable MP3 players, also known as S1 MP3 Players.

External Links