Failed delayed linking pad video of GstFlvDemux named demux to some pad of GstH264Parse named h264parse0

406769249 · January 27, 2022, 3:04am

I am using Jetson Xavier NX.
This is the pipeline I am using:
GST_DEBUG=3 gst-launch-1.0 rtmpsrc name=rtmpsrc do-timestamp=true location=“rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1” ! flvdemux name=demux demux.video ! h264parse ! video/x-h264 ! omxh264dec ! nvvidconv ! video/x-raw, format=I420 ! nv3dsink

This is the output:
0:00:00.095614794 30611 0x559292c6d0 WARN omx gstomx.c:2826:plugin_init: Failed to load configuration file: Valid key file could not be found in search dirs (searched in: /home/nephilim/.config:/etc/xdg/xdg-unity:/etc/xdg as per GST_OMX_CONFIG_DIR environment variable, the xdg user config directory (or XDG_CONFIG_HOME) and the system config directory (or XDG_CONFIG_DIRS)
Setting pipeline to PAUSED …
Pipeline is PREROLLING …
0:00:01.122327347 30611 0x559292ac50 WARN basesrc gstbasesrc.c:3055:gst_base_src_loop: error: Internal data stream error.
0:00:01.122444563 30611 0x559292ac50 WARN basesrc gstbasesrc.c:3055:gst_base_src_loop: error: streaming stopped, reason not-linked (-1)
0:00:01.122922390 30611 0x559292ac50 WARN default grammar.y:510:gst_parse_no_more_pads: warning: Delayed linking failed.
ERROR: from element /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc: Internal data stream error.
0:00:01.123015511 30611 0x559292ac50 WARN default grammar.y:510:gst_parse_no_more_pads: warning: failed delayed linking pad video of GstFlvDemux named demux to some pad of GstH264Parse named h264parse0
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc:
streaming stopped, reason not-linked (-1)
ERROR: pipeline doesn’t want to preroll.
Setting pipeline to NULL …
Freeing pipeline …

Pls suggest what’s wrong here?

Thanks.

DaneLLL · January 27, 2022, 4:51am

Hi,
Could you try uridecodebin like

gst-launch-1.0 uridecodebin uri="rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1" ! nvoverlaysink

406769249 · January 27, 2022, 4:53am

The output is :
Setting pipeline to PAUSED …
Pipeline is PREROLLING …
ERROR: from element /GstPipeline:pipeline0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstFaad:faad0: Could not decode stream.
Additional debug info:
gstfaad.c(781): gst_faad_handle_frame (): /GstPipeline:pipeline0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstFaad:faad0:
decoding error: Bitstream value not allowed by specification
ERROR: pipeline doesn’t want to preroll.
Setting pipeline to NULL …
Freeing pipeline …

DaneLLL · January 27, 2022, 7:00am

Hi,
It looks like uridecodebin cannot read the rtmp source. Woudl need to construct the pipeline manually. Please try

gst-launch-1.0 rtmpsrc name=rtmpsrc do-timestamp=true location=“rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1” ! flvdemux name=demux demux.video ! h264parse ! video/x-h264 ! nvv4l2decoder ! fakesink

We have deprecated omx plugins. Please try nvv4l2decoder plugin.

406769249 · January 28, 2022, 1:21am

I use this pipeline:

GST_DEBUG=2 gst-launch-1.0 rtmpsrc name=rtmpsrc do-timestamp=true location="rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1" ! flvdemux name=demux demux.video ! h264parse ! video/x-h264 ! nvv4l2decoder ! fakesink

It seems like the problem is between flvdemux and h264parse?I don’t get it…The out is:

Setting pipeline to PAUSED ...
Opening in BLOCKING MODE 
0:00:00.191721814 24289   0x55948ec160 WARN                    v4l2 gstv4l2object.c:4447:gst_v4l2_object_probe_caps:<nvv4l2decoder0:src> Failed to probe pixel aspect ratio with VIDIOC_CROPCAP: Unknown error -1
0:00:00.191825078 24289   0x55948ec160 WARN                    v4l2 gstv4l2object.c:2388:gst_v4l2_object_add_interlace_mode:0x55948d79f0 Failed to determine interlace mode
0:00:00.191899029 24289   0x55948ec160 WARN                    v4l2 gstv4l2object.c:2388:gst_v4l2_object_add_interlace_mode:0x55948d79f0 Failed to determine interlace mode
0:00:00.191960597 24289   0x55948ec160 WARN                    v4l2 gstv4l2object.c:2388:gst_v4l2_object_add_interlace_mode:0x55948d79f0 Failed to determine interlace mode
Pipeline is PREROLLING ...
0:00:01.528452997 24289   0x559487f590 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rtmpsrc> error: Internal data stream error.
0:00:01.528543140 24289   0x559487f590 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rtmpsrc> error: streaming stopped, reason not-linked (-1)
ERROR: from element /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc: Internal data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc:
streaming stopped, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
0:00:01.529694395 24289   0x559487f590 WARN                 default grammar.y:510:gst_parse_no_more_pads:<demux> warning: Delayed linking failed.
0:00:01.529866233 24289   0x559487f590 WARN                 default grammar.y:510:gst_parse_no_more_pads:<demux> warning: failed delayed linking pad  video of GstFlvDemux named demux to some pad of GstH264Parse named h264parse0
Freeing pipeline ...

DaneLLL · January 28, 2022, 1:44am

Hi,
Not sure if it help but please try decodebin as the commands in the topic:
Gstreamer issue with adding timeoverlay on RTMP stream

406769249 · January 28, 2022, 1:58am

I use decodebin like the topic, but it don’t work.
And i try this pipeline

GST_DEBUG=2 gst-launch-1.0 rtmpsrc name=rtmpsrc do-timestamp=true location="rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1"  ! flvdemux name=demux demux.video ! fakesink

the output is:

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
0:00:01.235423211 26059   0x55828a06d0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rtmpsrc> error: Internal data stream error.
0:00:01.235498892 26059   0x55828a06d0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rtmpsrc> error: streaming stopped, reason not-linked (-1)
0:00:01.235782829 26059   0x55828a06d0 WARN                 default grammar.y:510:gst_parse_no_more_pads:<demux> warning: Delayed linking failed.
0:00:01.235853614 26059   0x55828a06d0 WARN                 default grammar.y:510:gst_parse_no_more_pads:<demux> warning: failed delayed linking pad  video of GstFlvDemux named demux to some pad of GstFakeSink named fakesink0
ERROR: from element /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc: Internal data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc:
streaming stopped, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

it’s ok when i link rtmpsrc to fakesink

GST_DEBUG=2 gst-launch-1.0 rtmpsrc name=rtmpsrc do-timestamp=true location="rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1"   ! fakesink

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:03.056307217
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ..

Any ideas?

406769249 · January 28, 2022, 2:03am

This is the pipeline by using decodebin:

GST_DEBUG=2 gst-launch-1.0 -v rtmpsrc location="rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1" do-timestamp=true ! queue2 ! flvdemux name=demux flvmux name=mux demux.video ! queue ! decodebin ! nvvidconv ! 'video/x-raw, format=(string)I420' ! fakesink

the output is:

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
0:00:00.608450799 26665   0x5567b02cf0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rtmpsrc0> error: Internal data stream error.
0:00:00.608544464 26665   0x5567b02cf0 WARN                 basesrc gstbasesrc.c:3055:gst_base_src_loop:<rtmpsrc0> error: streaming stopped, reason not-linked (-1)
ERROR: from element /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc0: Internal data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstRTMPSrc:rtmpsrc0:
streaming stopped, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

DaneLLL · January 28, 2022, 6:25am

Hi,
For rtmp source, it shall work fine with flvdemux. A bit strange it fails in the simple command rtmpsrc ! flvdemux ! fakesink. You would need to work out a working gstreamer command first, or we are not able to suggest next.

Would see if other users can share experience about the failure.

Kangalow · January 28, 2022, 8:26pm

I believe that you have to also sink the audio (even if there isn’t any). Here’s the shortest pipeline I could get to work:

GST_DEBUG=1 gst-launch-1.0 -v rtmpsrc location="rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1" do-timestamp=true ! \
flvdemux name=demux  \
demux.video ! queue ! decodebin ! nvvidconv ! xvimagesink  \
demux.audio ! queue ! fakesink

The \ character on each line tells the Terminal that the line continues, no carriage return. Everything should be on the same line.

There appear to be other issues. After a first run, it may take several attempts at launch before working correctly again. The debug info shows what decodebin selects to connect the pipeline together.

Here’s an image:

Here’s the launch debug info:

jetsonhacks@jetsonhacks:~$ GST_DEBUG=1 gst-launch-1.0 -v rtmpsrc location="rtmp://121.43.126.231:12966/live/28de595627d6d45cc11e4d17cbf021ee4c947bbb8ba8ddbc live=1" do-timestamp=true ! \

flvdemux name=demux
demux.video ! queue ! decodebin ! nvvidconv ! xvimagesink
demux.audio ! queue ! fakesink
Setting pipeline to PAUSED …
Pipeline is PREROLLING …
/GstPipeline:pipeline0/GstQueue:queue1.GstPad:sink: caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true, stream-format=(string)raw, rate=(int)8000, channels=(int)1, codec_data=(buffer)1588
/GstPipeline:pipeline0/GstQueue:queue1.GstPad:sink: caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true, stream-format=(string)raw, rate=(int)8000, channels=(int)1, codec_data=(buffer)1588
/GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps = audio/mpeg, mpegversion=(int)4, framed=(boolean)true, stream-format=(string)raw, rate=(int)8000, channels=(int)1, codec_data=(buffer)1588
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:sink: caps = video/x-h264, stream-format=(string)avc, width=(int)2560, height=(int)1440, codec_data=(buffer)01640032ffe1002867640032ad84010c20086100430802184010c200843b5014005ad37010101400000fa000030d421001000468ee3cb0
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = video/x-h264, stream-format=(string)avc, width=(int)2560, height=(int)1440, codec_data=(buffer)01640032ffe1002867640032ad84010c20086100430802184010c200843b5014005ad37010101400000fa000030d421001000468ee3cb0
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = video/x-h264, stream-format=(string)avc, width=(int)2560, height=(int)1440, codec_data=(buffer)01640032ffe1002867640032ad84010c20086100430802184010c200843b5014005ad37010101400000fa000030d421001000468ee3cb0
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = video/x-h264, stream-format=(string)avc, width=(int)2560, height=(int)1440, codec_data=(buffer)01640032ffe1002867640032ad84010c20086100430802184010c200843b5014005ad37010101400000fa000030d421001000468ee3cb0
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstH264Parse:h264parse0.GstPad:sink: caps = video/x-h264, stream-format=(string)avc, width=(int)2560, height=(int)1440, codec_data=(buffer)01640032ffe1002867640032ad84010c20086100430802184010c200843b5014005ad37010101400000fa000030d421001000468ee3cb0
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:sink: caps = video/x-h264, stream-format=(string)avc, width=(int)2560, height=(int)1440, codec_data=(buffer)01640032ffe1002867640032ad84010c20086100430802184010c200843b5014005ad37010101400000fa000030d421001000468ee3cb0
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstGhostPad:sink: caps = video/x-h264, stream-format=(string)avc, width=(int)2560, height=(int)1440, codec_data=(buffer)01640032ffe1002867640032ad84010c20086100430802184010c200843b5014005ad37010101400000fa000030d421001000468ee3cb0
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstH264Parse:h264parse0.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, width=(int)2560, height=(int)1440, framerate=(fraction)25/1, interlace-mode=(string)progressive, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, alignment=(string)au, profile=(string)high, level=(string)5
Opening in BLOCKING MODE
NvMMLiteOpen : Block : BlockType = 261
NVMEDIA: Reading vendor.tegra.display-size : status: 6
NvMMLiteBlockCreate : Block : BlockType = 261
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/nvv4l2decoder:nvv4l2decoder0.GstPad:sink: caps = video/x-h264, stream-format=(string)byte-stream, width=(int)2560, height=(int)1440, framerate=(fraction)25/1, interlace-mode=(string)progressive, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, alignment=(string)au, profile=(string)high, level=(string)5
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-h264, stream-format=(string)byte-stream, width=(int)2560, height=(int)1440, framerate=(fraction)25/1, interlace-mode=(string)progressive, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, alignment=(string)au, profile=(string)high, level=(string)5
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-h264, stream-format=(string)byte-stream, width=(int)2560, height=(int)1440, framerate=(fraction)25/1, interlace-mode=(string)progressive, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, alignment=(string)au, profile=(string)high, level=(string)5
/GstPipeline:pipeline0/GstDecodeBin:decodebin0/nvv4l2decoder:nvv4l2decoder0.GstPad:src: caps = video/x-raw(memory:NVMM), format=(string)NV12, width=(int)2560, height=(int)1440, 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)25/1
/GstPipeline:pipeline0/Gstnvvconv:nvvconv0.GstPad:src: caps = video/x-raw, width=(int)2560, height=(int)1440, 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, framerate=(fraction)25/1, format=(string)YUY2
/GstPipeline:pipeline0/GstXvImageSink:xvimagesink0.GstPad:sink: caps = video/x-raw, width=(int)2560, height=(int)1440, 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, framerate=(fraction)25/1, format=(string)YUY2
/GstPipeline:pipeline0/Gstnvvconv:nvvconv0.GstPad:sink: caps = video/x-raw(memory:NVMM), format=(string)NV12, width=(int)2560, height=(int)1440, 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)25/1
/GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad1: caps = video/x-raw(memory:NVMM), format=(string)NV12, width=(int)2560, height=(int)1440, 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)25/1
Pipeline is PREROLLED …
Setting pipeline to PLAYING …
New clock: GstSystemClock

Hope this helps.

406769249 · February 7, 2022, 1:47am

wow! it works ! THANKS!!!
I will continue to study the implementation on deepstream

system · March 2, 2022, 4:12am

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Failed delayed linking pad video of GstFlvDemux named demux to some pad of GstH264Parse named h264parse0

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