<div dir="ltr">I am using CentOS 7.2... gstreamer is 1.4.5.<div><br></div><div>When I run this to view my C920 webcam it comes up but 1 frame a second</div><div><div>gst-launch-1.0  -vvvv v4l2src device=/dev/video0 ! decodebin ! videoconvert ! ximagesink</div></div><div><br></div><div>When I then run this command:</div><div>gst-launch-1.0  -vvvv v4l2src device=/dev/video0 ! video/x-h264, width=1920,height=1080,framerate=\(fraction\)30/1 ! decodebin ! videoconvert ! ximagesink<br></div><div><br></div><div>My window pops up but I never see a picture..</div><div><br></div><div>This is the output from GST_DEBUG=3</div><div><br></div><div><div>GST_DEBUG=3 gst-launch-1.0  -vvvv v4l2src device=/dev/video0 ! video/x-h264, width=1920,height=1080,framerate=\(fraction\)30/1 ! decodebin ! videoconvert ! ximagesink</div><div>Setting pipeline to PAUSED ...</div><div>Pipeline is live and does not need PREROLL ...</div><div>Setting pipeline to PLAYING ...</div><div>New clock: GstSystemClock</div><div>/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstH264Parse:h264parse0.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstH264Parse:h264parse0.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1\,\ parsed\=\(boolean\)true\,\ level\=\(string\)4\,\ profile\=\(string\)constrained-baseline"</div><div>0:00:00.535139262 24709      0x156ed90 WARN              fluh264dec fluh264dec.c:251:gst_fluh264dec_flush:<GstFluH264Dec@0x7f8850060000> we are not setup yet, can't flush</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstCapsFilter:capsfilter1.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1\,\ parsed\=\(boolean\)true\,\ level\=\(string\)4\,\ profile\=\(string\)constrained-baseline"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstFluH264Dec:fluh264dec0.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1\,\ parsed\=\(boolean\)true\,\ level\=\(string\)4\,\ profile\=\(string\)constrained-baseline"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstCapsFilter:capsfilter1.GstPad:sink: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)au\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ framerate\=\(fraction\)30/1\,\ parsed\=\(boolean\)true\,\ level\=\(string\)4\,\ profile\=\(string\)constrained-baseline"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstFluH264Dec:fluh264dec0.GstPad:src: caps = "video/x-raw\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ format\=\(string\)I420\,\ framerate\=\(fraction\)30/1\,\ rotation\=\(int\)0\,\ pixel-aspect-ratio\=\(fraction\)1/1"</div><div>/GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:src: caps = "video/x-raw\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ framerate\=\(fraction\)30/1\,\ rotation\=\(int\)0\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ format\=\(string\)BGRx"</div><div>/GstPipeline:pipeline0/GstXImageSink:ximagesink0.GstPad:sink: caps = "video/x-raw\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ framerate\=\(fraction\)30/1\,\ rotation\=\(int\)0\,\ pixel-aspect-ratio\=\(fraction\)1/1\,\ format\=\(string\)BGRx"</div><div>/GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:sink: caps = "video/x-raw\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ format\=\(string\)I420\,\ framerate\=\(fraction\)30/1\,\ rotation\=\(int\)0\,\ pixel-aspect-ratio\=\(fraction\)1/1"</div><div>/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad1: caps = "video/x-raw\,\ width\=\(int\)1920\,\ height\=\(int\)1080\,\ format\=\(string\)I420\,\ framerate\=\(fraction\)30/1\,\ rotation\=\(int\)0\,\ pixel-aspect-ratio\=\(fraction\)1/1"</div><div>^Chandling interrupt.</div></div><div><br></div><div><br></div><div>Why would this not be showing a picture at the 30 frames a second?</div><div><br></div><div>Thanks,</div><div><br></div><div>jerry</div><div><br></div></div>