MSV

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Revision as of 16:17, 16 March 2009 by Multimedia Mike (talk | contribs) (general edits)
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MSV files are Sony's Memory Stick Compressed Voice format. MSV files apparently come in 2 versions:

The first version is called MSV (ADPCM) which is, according to Sony, a "special version of ADPCM". <ref name="msv-adpcm">http://web.archive.org/web/20011208011229/http://www.sel.sony.com/SEL/consumer/icrecorder/flash/faq_capability.html#3</ref>

The second version is called MSV (LPEC) and uses a proprietary Sony codec called Long-term Predicted Excitation Coding. <ref name="msv-lpec">Wikipedia entry for LPEC</ref> This codec is apparently also used in another file format called Digital Voice File (extension .dvf).

File Format

The file is made of 1024-byte packets that each begin with:

 00 xbyte 00 0A 04 00 0E 30 81 cbyte

where xbyte is variable and cbyte increases every 4 packets except the first packet which starts with "MS_VOICE" (in the single file we have now ...)

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