Le 8 nov. 2016 2:05 AM, "Eric-Stone" <<a href="mailto:somedude114@gmail.com">somedude114@gmail.com</a>> a écrit : > > Hi, > > I'm trying to stream two synchronized side-by-side webcams compressed in > h264 over the network. Right now, I have the output saved to a file (because > it simplifies testing) using the command: > > gst-launch-1.0 \ > v4l2src device=/dev/video0 do-timestamp=true ! \ > image/jpeg, width=$WIDTH, height=$HEIGHT, framerate=$FPS/1 ! \ > jpegparse ! jpegdec ! \ > videorate ! \ > alpha alpha=1.0 ! \ > videobox border-alpha=0 left=-$WIDTH ! \ > videomixer name=mix ! \ > videoconvert ! \ > queue ! \ > queue ! omxh264enc ! matroskamux ! filesink location=output/out.mkv \ > $v4l2src device=/dev/video1 do-timestamp=true ! \ > image/jpeg, width=$WIDTH, height=$HEIGHT, framerate=$FPS/1 ! \ > jpegparse ! jpegdec ! \ > videorate ! \ > queue ! \ > mix. > > This works, but unfortunately the two views are out of sync. I imagine that > I need to add "sync=true" to some element before the encoder, but I'm unsure > as where that should go. Does anyone have any suggestions on how to > synchronize these two inputs? > First avoid do-timestamp, this will break a/v sync. Then replace videomixer with the new element compositor. The new one supports live streams. It's a drop-in replacement. You should probably use the compositor pad properties instead of videobox, performance will be better. > > -- > View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Stream-Synchronized-Webcams-tp4680531.html">http://gstreamer-devel.966125.n4.nabble.com/Stream-Synchronized-Webcams-tp4680531.html</a> > Sent from the GStreamer-devel mailing list archive at Nabble.com. > _______________________________________________ > gstreamer-devel mailing list > <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> > <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a>