<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Hi all,</div>
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<div>I'm using gstreamer 1.2.0 on gentoo linux, together with v4l2loopback 0.7.1 and would like to realize the following setup:</div>
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<div>The video of a DV camera (PAL, 50i or 25F) connected via firewire shall be pushed into v4l2loopback (presumably using v4l2sink?) so that other v4l2 programs can read the video, as if it was from a webcam.</div>
<div>In my case gst-launch-1.0 v4l2src ... and firefox (for WebRTC) should work for reading.</div>
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<div>For reading from /dev/video0 (for testing purposes) i use the following command:</div>
<div>$ gst-launch-1.0 v4l2src device=/dev/video0 ! xvimagesink</div>
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<div>When filling /dev/video0 using</div>
<div>$ gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video0</div>
<div>the viewing works, and i see the testvideo in the xvimagesink (using the v4l2loopback device!)</div>
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<div>Sending the dv stream to a xvimagesink without pushing it throught v4l2loopback using</div>
<div>$ gst-launch-1.0 dv1394src ! queue ! decodebin ! xvimagesink</div>
<div>works too. I get some warnings (<a href="http://dpaste.com/hold/1413173/" target="_blank">http://dpaste.com/hold/1413173/</a>) but i see the video from the camera.</div>
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<div>When running</div>
<div>$ gst-launch-1.0 dv1394src ! queue ! decodebin ! v4l2sink device=/dev/video0</div>
<div>I see the same warnings (<a href="http://dpaste.com/hold/1413174/" target="_blank">http://dpaste.com/hold/1413174/</a>) on the sender's side, however, reading from /dev/video0 using</div>
<div>$ gst-launch-1.0 v4l2src device=/dev/video0 ! xvimagesink</div>
<div>doesn't work anymore: I get an ERROR message: Device '/dev/video0' is not a capture device (<a href="http://dpaste.com/hold/1413175/" target="_blank">http://dpaste.com/hold/1413175/</a>).</div>
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<div>And indeed, it seems as if caps are different: <a href="http://dpaste.com/hold/1413176/" target="_blank">http://dpaste.com/hold/1413176/</a> for the dv sent to v4l2sink, and <a href="http://dpaste.com/hold/1413177/" target="_blank">http://dpaste.com/hold/1413177/</a> for the videotestsrc sent to v4l2sink.</div>
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<div>Thus it seems, as if i need to get the capture-caps somehow into the gst-pipe?</div>
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<div>Can anyone give me a hint how to do that / where to look for a solution?</div>
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<div>Thanks in advance!</div>
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<div>Regards,</div>
<div>SimAV</div>
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