MSV: Difference between revisions
(Mention the two different versions of the format) |
(general edits) |
||
Line 1: | Line 1: | ||
* Extension: MSV | |||
* Company: [[Sony]] | * Company: [[Sony]] | ||
* Samples: http://samples.mplayerhq.hu/A-codecs/MSV/ | * Samples: http://samples.mplayerhq.hu/A-codecs/MSV/ (alternately, perform a Google search for "filetype:MSV SONY") | ||
MSV files are Sony's Memory Stick Compressed Voice format. | 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> | |||
according to Sony [http://web.archive.org/web/20011208011229/http://www.sel.sony.com/SEL/consumer/icrecorder/flash/faq_capability.html#3 | |||
The second version called MSV (LPEC) uses a proprietary Sony codec called [[Long-term Predicted Excitation Coding]] [http://en.wikipedia.org/wiki/Long-term_Predicted_Excitation_Coding] | The second version is called MSV (LPEC) and uses a proprietary Sony codec called [[Long-term Predicted Excitation Coding]]. <ref name="msv-lpec">[http://en.wikipedia.org/wiki/Long-term_Predicted_Excitation_Coding Wikipedia entry for LPEC]</ref> This codec is apparently also used in another file format called Digital Voice File (extension .dvf). | ||
== File Format == | == File Format == | ||
The file is made of 1024 byte packets | The file is made of 1024-byte packets that each begin with: | ||
00 xbyte 00 0A 04 00 0E 30 81 cbyte | 00 xbyte 00 0A 04 00 0E 30 81 cbyte | ||
where xbyte is variable and cbyte increases every 4 packets | 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 ...) | ||
except the first packet which starts with "MS_VOICE" | |||
(in the single file we have now ...) | <references/> | ||
[[Category:Container Formats]] | [[Category:Container Formats]] |
Revision as of 16:17, 16 March 2009
- Extension: MSV
- Company: Sony
- Samples: http://samples.mplayerhq.hu/A-codecs/MSV/ (alternately, perform a Google search for "filetype:MSV SONY")
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 ...)
<references/>