Hi all, I'm trying to pipeline a v4l2src to a qmlglsink. I already crawled the internet for days and couldn't find any useful hint. I also started to dig into the plugin source code, but this is a larger project.. First: If I just pipeline the v4l2src to some autovideosink, then everything is fine. My (code)pipeline is: v4l2src device=/dev/video0 ! video/x-raw, format=YUY2, width=320, height=240 ! videoconvert ! glupload ! qmlglsink If I run this, this problem occurs: basetransform gstbasetransform.c:1210:gst_base_transform_find_transform:<gluploadelement0> transform could not transform video/x-raw, format=(string)YUY2, width=(int)320, height=(int)240, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)2:4:5:1, interlace-mode=(string)progressive in anything we support According to gst-inspect (or at least to my understanding) the videoconvert should be able to handle YUY2 as well as RGBA to provide to glupload. Any hints here are appreciated on why this isn't working. Can this be a image size problem? Like the imagesize has to be in factors of 2 or something? I also tried this: gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw, width=320, height=240, format=YUY2 ! videoconvert ! glupload ! gldownload ! autovideosink --gst-debug-level=4 Which is basically telling me the same problem: WARN basetransform gstbasetransform.c:1364:gst_base_transform_setcaps:<gluploadelement0> transform could not transform video/x-raw, width=(int)320, height=(int)240, format=(string)YUY2, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)2:4:5:1, interlace-mode=(string)progressive in anything we support INFO basesrc gstbasesrc.c:2962:gst_base_src_loop:<v4l2src0> marking pending DISCONT WARN basetransform gstbasetransform.c:1364:gst_base_transform_setcaps:<gluploadelement0> transform could not transform video/x-raw, width=(int)320, height=(int)240, format=(string)YUY2, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)2:4:5:1, interlace-mode=(string)progressive in anything we support WARN basesrc gstbasesrc.c:3072:gst_base_src_loop:<v4l2src0> error: Internal data stream error. WARN basesrc gstbasesrc.c:3072:gst_base_src_loop:<v4l2src0> error: streaming stopped, reason not-negotiated (-4) INFO GST_ERROR_SYSTEM gstelement.c:2141:gst_element_message_full_with_details:<v4l2src0> posting message: Internal data stream error. INFO GST_ERROR_SYSTEM gstelement.c:2168:gst_element_message_full_with_details:<v4l2src0> posted error message: Internal data stream error. Thanks for any enlightment into this issue. I added some HTML-breaks as the preview looked horrible without. Hopefully this is displayed properly to you. Best, Bodo <hr align="left" width="300" /> Sent from the <a href="http://gstreamer-devel.966125.n4.nabble.com/">GStreamer-devel mailing list archive</a> at Nabble.com.