Thanks. That explains why the two plugins can't speak to each other. I do have ffdec_dvvideo, but I can't get gst-launch-0.10 dshowvideosrc ! fakesink to work as this causes gst-launch to crash, again without anything useful being outputted on the command line, even with the -v option. If I recreate the pipeline in my application I get an integer division by zero exception sometime during the call to gst_element_link_many. I know that dshowvideosrc can find the camera because when I set the device-name property to be the wrong camera name the pipeline falls through without an exception being thrown. I've had a look at the other properties I could set on dshowvideosrc, but can't see anything that jumps out at me that I should configure. Is there anything else that you can think of that I could do? Phil <div class="gmail_quote">2009/6/25 Julien Isorce <<a href="mailto:julien.isorce@gmail.com">julien.isorce@gmail.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="gmail_quote"><div class="im">2009/6/25 Phil Rendell <<a href="mailto:philrendell@gmail.com" target="_blank">philrendell@gmail.com</a>> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="im">There is only one filter under the Video Capture Sources group: the Microsoft DV Camera and VCR. There are two output pins: DV A/V Out and DV Vid Out. All of the properties in DV A/V Out are disabled and are either empty or set to 'None', with the exception of the color space/compression (which is probably the one we're interested in) which is set to dvsd. The properties for DV Vid Out are the same as above, but without the color space/compression set. </div></blockquote></div> Then I think gst-launch-0.10 dshowvideosrc ! fakesink can play (I should ask you first) because dvsd is ok with the current implementation. But in this case I can see from the implementation that dshowvideosrc outputs video/x-dv You should see it using -v option. Anyway, ffmpegcolorspace doest not handle video/x-dv, that's why you got <div class="im"> "WARNING: erroneous pipeline: could not link dshowvideosrc0 to ffmpegcsp0" </div>Then you could try to insert a ffdec_dvvideo (if you have it) bettween dshowvideosrc and ffmpegcolorspace. (note that I do not know if gstreamer has a dv decoder that does not come from gst-ffmpeg) Sincerely Julien ------------------------------------------------------------------------------ _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div>