this command work fine:
gst-launch-1.0 -v --gst-debug-level=2 udpsrc port=1234 ! decodebin ! video/x-raw,format=I420 ! autovideosink
this command not work:
gst-launch-1.0 -v --gst-debug-level=2 udpsrc port=1234 ! decodebin ! video/x-raw,format=I420 ! videoconvert ! video/x-raw,format=RGB ! autovideosink
error:
failed delayed linking some pad of GstDecodeBin named decodebin0 to some pad of GstVideoConvert named videoconvert0
what is wrong?
importance log:
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/avdec_mpeg4:avdec_mpeg4-0.GstPad:src: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right-flopped/half-aspect/mixed-mono, pixel-aspect-ratio=(fraction)1/1, chroma-site=(string)mpeg2, colorimetry=(string)bt709, framerate=(fraction)10/1
all log:
Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Setting pipeline to PLAYING ... New clock: GstSystemClock /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = video/mpegts, systemstream=(boolean)true, packetsize=(int)188 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTSDemux:tsdemux0.GstPad:sink: caps = video/mpegts, systemstream=(boolean)true, packetsize=(int)188 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0.GstPad:src_0: caps = video/mpeg, mpegversion=(int)4, systemstream=(boolean)false /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg4VParse:mpeg4vparse0.GstPad:sink: caps = video/mpeg, mpegversion=(int)4, systemstream=(boolean)false /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-buffers = 5 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-time = 0 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-bytes = 2097152 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0.GstMultiQueuePad:sink_0: caps = video/mpeg, mpegversion=(int)4, systemstream=(boolean)false /GstPipeline:pipeline0/GstDecodeBin:decodebin0/avdec_mpeg4:avdec_mpeg4-0.GstPad:sink: caps = video/mpeg, mpegversion=(int)4, systemstream=(boolean)false, parsed=(boolean)true /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg4VParse:mpeg4vparse0.GstPad:src: caps = video/mpeg, mpegversion=(int)4, systemstream=(boolean)false, parsed=(boolean)true /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstMpeg4VParse:mpeg4vparse0.GstPad:src: caps = video/mpeg, mpegversion=(int)4, systemstream=(boolean)false, parsed=(boolean)true, profile=(string)simple, level=(string)1, codec_data=(buffer)000001b001000001b58913000001000000012000c48d8800553c04871443, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/avdec_mpeg4:avdec_mpeg4-0.GstPad:sink: caps = video/mpeg, mpegversion=(int)4, systemstream=(boolean)false, parsed=(boolean)true, profile=(string)simple, level=(string)1, codec_data=(buffer)000001b001000001b58913000001000000012000c48d8800553c04871443, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/avdec_mpeg4:avdec_mpeg4-0.GstPad:src: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right-flopped/half-aspect/mixed-mono, pixel-aspect-ratio=(fraction)1/1, chroma-site=(string)mpeg2, colorimetry=(string)bt709, framerate=(fraction)10/1 /GstCapsFilter:capsfilter2: caps = video/x-raw, format=(string)I420 0:00:01.480704357 3721 0x7f3f9809a230 WARN default grammar.y:510:gst_parse_no_more_pads: warning: Delayed linking failed. 0:00:01.480728456 3721 0x7f3f9809a230 WARN default grammar.y:510:gst_parse_no_more_pads: warning: failed delayed linking some pad of GstDecodeBin named decodebin0 to some pad of GstVideoConvert named videoconvert0 WARNING: from element /GstPipeline:pipeline0/GstDecodeBin:decodebin0: Delayed linking failed. Additional debug info: ./grammar.y(510): gst_parse_no_more_pads (): /GstPipeline:pipeline0/GstDecodeBin:decodebin0: failed delayed linking some pad of GstDecodeBin named decodebin0 to some pad of GstVideoConvert named videoconvert0 /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad3: caps = video/x-raw, format=(string)I420, width=(int)1920, height=(int)1080, interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right-flopped/half-aspect/mixed-mono, pixel-aspect-ratio=(fraction)1/1, chroma-site=(string)mpeg2, colorimetry=(string)bt709, framerate=(fraction)10/1 Redistribute latency... 0:00:01.564689538 3721 0x5644dfac2f70 WARN basesrc gstbasesrc.c:3055:gst_base_src_loop: error: Internal data stream error. 0:00:01.564741097 3721 0x5644dfac2f70 WARN basesrc gstbasesrc.c:3055:gst_base_src_loop: error: streaming stopped, reason not-linked (-1) ERROR: from element /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: Internal data stream error. Additional debug info: gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: streaming stopped, reason not-linked (-1) Execution ended after 0:00:01.516699193 Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ...
