Here is new output with -v: gst-launch -v filesrc location=1.MPG ! decodebin ! video/x-raw-yuv, width=640,height=480,framerate=5/1 ! ffmpegcolorspace ! jpegenc ! multipartmux ! tcpserversink host=192.168.2.1 port=5000 (gst-launch-0.10:10915): GLib-WARNING **: g_set_prgname() called multiple times Setting pipeline to PAUSED ... /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = video/mpeg, systemstream=(boolean)true, mpegversion=(int)2 Pipeline is PREROLLING ... /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpegPSDemux:mpegpsdemux0.GstPad:sink: caps = video/mpeg, systemstream=(boolean)true, mpegversion=(int)2 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue0.GstPad:sink: caps = video/mpeg, mpegversion=(int)2, systemstream=(boolean)false /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue0.GstPad:src: caps = video/mpeg, mpegversion=(int)2, systemstream=(boolean)false /GstPipeline:pipeline0/GstDecodeBin:decodebin0/MpegVideoParse:mpegvideoparse0.GstPad:sink: caps = video/mpeg, mpegversion=(int)2, systemstream=(boolean)false /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue1.GstPad:sink: caps = audio/mpeg, mpegversion=(int)1 /GstPipeline:pipeline0/GstCapsFilter:capsfilter1: caps = video/x-raw-yuv, width=(int)640, height=(int)480, framerate=(fraction)5/1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/MpegVideoParse:mpegvideoparse0.GstPad:src: caps = video/mpeg, systemstream=(boolean)false, parsed=(boolean)true, mpegversion=(int)2, width=(int)640, height=(int)480, framerate=(fraction)25/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false, codec_data=(buffer)000001b32801e013ffffe090000001b5148a00010000 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue1.GstPad:src: caps = audio/mpeg, mpegversion=(int)1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg2dec:mpeg2dec0.GstPad:sink: caps = video/mpeg, systemstream=(boolean)false, parsed=(boolean)true, mpegversion=(int)2, width=(int)640, height=(int)480, framerate=(fraction)25/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false, codec_data=(buffer)000001b32801e013ffffe090000001b5148a00010000 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg2dec:mpeg2dec0.GstPad:sink: caps = video/mpeg, systemstream=(boolean)false, parsed=(boolean)true, mpegversion=(int)2, width=(int)640, height=(int)480, framerate=(fraction)25/1, pixel-aspect-ratio=(fraction)1/1, interlaced=(boolean)false, codec_data=(buffer)000001b32801e013ffffe090000001b5148a00010000 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue0: max-size-bytes = 20240 /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0: caps = video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)25/1, interlaced=(boolean)false /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg2dec:mpeg2dec0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)25/1, interlaced=(boolean)false ERROR: from element /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpegPSDemux:mpegpsdemux0: Internal data stream error. Additional debug info: gstmpegdemux.c(2734): gst_flups_demux_loop (): /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpegPSDemux:mpegpsdemux0: stream stopped, reason not-negotiated ERROR: pipeline doesn't want to preroll. Setting pipeline to NULL ... /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:src0: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMPEGAudioParse:mpegaudioparse0.GstPad:src: caps = audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3, rate=(int)44100, channels=(int)2, parsed=(boolean)true /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMPEGAudioParse:mpegaudioparse0.GstPad:src: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMPEGAudioParse:mpegaudioparse0.GstPad:sink: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue1.GstPad:src: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue1.GstPad:sink: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg2dec:mpeg2dec0.GstPad:src: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg2dec:mpeg2dec0.GstPad:sink: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/MpegVideoParse:mpegvideoparse0.GstPad:src: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/MpegVideoParse:mpegvideoparse0.GstPad:sink: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue0.GstPad:src: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstQueue:queue0.GstPad:sink: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpegPSDemux:mpegpsdemux0.GstPad:audio_c0: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpegPSDemux:mpegpsdemux0.GstPad:video_e0: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpegPSDemux:mpegpsdemux0.GstPad:sink: caps = NULL /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = NULL Freeing pipeline ... Thanks!!! <div class="gmail_quote">On Sun, Feb 20, 2011 at 1:48 PM, Tim-Philipp Müller <<a href="mailto:t.i.m@zen.co.uk">t.i.m@zen.co.uk</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">On Sun, 2011-02-20 at 13:37 -0600, Tom wrote: > gst-launch filesrc "location=1.MPG" ! decodebin ! video/x-raw-yuv, > width=640,height=480,framerate=5/1 ! ffmpegcolorspace ! jpegenc ! > multipartmux ! tcpserversink host=192.168.2.1 port=5000 > > and then got an error: </div>> .. <div class="im">> stream stopped, reason not-negotiated </div><div class="im">> .. > I don't know why..... </div>This usually means there's a problem with caps somewhere. My first guess would be that your input video 1.MPG does not have a resolution of 640x480. If you want to scale the input video to this resolution, put a videoscale element between decodebin and the caps filter. (If that's not it, maybe you could provide the output of also passing -v to gst-launch.) Cheers -Tim _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>