https://wiki.multimedia.cx/api.php?action=feedcontributions&feedformat=atom&user=BjyQrlMultimediaWiki - User contributions [en]2026-09-28T17:06:40ZUser contributionsMediaWiki 1.39.5https://wiki.multimedia.cx/index.php?title=Winnow_Video&diff=7618Winnow Video2007-04-10T21:18:39Z<p>BjyQrl: </p>
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<div>* FourCC: WINX, WNV1<br />
* Samples: <br />
** WINX: http://samples.mplayerhq.hu/V-codecs/WINX/<br />
** WNV1: http://samples.mplayerhq.hu/V-codecs/WNV1/<br />
<br />
== Winnov Video 1 (FOURCC: WNV1) ==<br />
<br />
Another hardware codec like [[ATI VCR1]], [[Indeo 2]] or [[Video XL]]. It uses YUYV format and stores deltas with static code.<br />
<br />
Codes used really are simple unary codes with following sign bit and 11111111 code used as escape.<br />
<br />
Each component may be decoded this way:<br />
<br />
code = get_code();<br />
if(code == ESCAPE)<br />
newval = code;<br />
else<br />
newval = oldval (code << SHIFT);<br />
<br />
SHIFT = 6 (may be another, but no samples with another value are known), ESCAPE = 15 (code for ESCAPE is mentioned above)<br />
<br />
== Winnov Video 2 (FOURCC: WINX) ==<br />
<br />
This one is yet undiscovered, seems to be another [[MPEG]] or [[H.261]] variant.<br />
<br />
[[Category:Video Codecs]]<br />
[[Category:Undiscovered Video Codecs]]</div>BjyQrl