Hi,<div><br></div><div>GStreamer ffmpeg decoders/encoders for wmv and vc1 use this mime type: &quot;video/x-wmv&quot;</div><div>and in caps with have 2 fields (+ usual width/heigh/framerate fields):</div><div>wmvversion = {1,2,3} </div>
<div>format = (fourcc)WVC1</div><div><br></div><div>format field is only set for VC1 streams to distinguish them from wmv3 streams</div><div><br></div><div>To summarize:</div><div>wmv1 = &quot;video/x-wmv, wmvversion=1&quot;</div>
<div>wmv2 = &quot;video/x-wmv, wmvversion=2&quot;</div><div>wmv3 = &quot;video/x-wmv, wmvversion=3&quot;</div><div>vc1 = &quot;video/x-wmv, wmvversion=3, format=(fourcc)WVC1&quot;</div><div><br></div><div>Benjamin <br><div>
<div><br><div class="gmail_quote">2011/5/31 Rob Clark <span dir="ltr">&lt;<a href="mailto:rob.clark@linaro.org">rob.clark@linaro.org</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
All,<br>
<br>
In context of a vc1 parser, I&#39;ve posted the Annex L section from the<br>
vc-1 spec.  This describes the format that is used by TI vc-1 decoder<br>
for simple and main profile.<br>
<br>
<a href="https://docs.google.com/a/linaro.org/viewer?a=v&amp;pid=explorer&amp;chrome=true&amp;srcid=0B8Vp3bFd4_71NGFkMTkzZjktOGI0Ni00NTQ5LTk0OTgtZGZiMDNjYWFiYTA4&amp;hl=en_US" target="_blank">https://docs.google.com/a/linaro.org/viewer?a=v&amp;pid=explorer&amp;chrome=true&amp;srcid=0B8Vp3bFd4_71NGFkMTkzZjktOGI0Ni00NTQ5LTk0OTgtZGZiMDNjYWFiYTA4&amp;hl=en_US</a><br>

<br>
Advanced profile is something different... just a start code.  I&#39;m not<br>
entirely sure offhand the name for the format used for<br>
advanced-profile, but it is different from simple/main profile.<br>
<br>
Also, here is the relevant code from the GStreamer plugin for TI VC-1 decoder:<br>
<br>
<a href="https://github.com/robclark/gst-ducati/blob/master/src/gstducativc1dec.c#L125" target="_blank">https://github.com/robclark/gst-ducati/blob/master/src/gstducativc1dec.c#L125</a><br>
<br>
<br>
We need to somehow:<br>
<br>
a) identify if there are any other possible formats that decoders expect<br>
b) choose caps field name(s) and values to uniquely identify the<br>
different formats, so a vc1parser element could do the necessary<br>
conversion<br>
<br>
<br>
BR,<br>
-R<br>
<br>
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</blockquote></div><br></div></div></div>