tsdemux: Delayed linking failed

[jmz]

Hi,


Tim Müller wrote
> On Tue, 2017-07-25 at 16:59 -0700, quang_openstack wrote:
>> *Decoder*
>> gst-launch-1.0 udpsrc port=5000 ! tsdemux ! fdkaacdec ! ...
>> 
> 
> Try adding an aacparse before the decoder.

I got the similar error when converting M2TS file (H.264 + AAC) to MP4 file.
The pipeline does not work:

  gst-launch-1.0 filesrc location=src.ts ! typefind ! tsdemux name=demux !
video/x-h264 ! queue ! h264parse ! mp4mux name=mux ! filesink
location=sink.mp4 demux. ! audio/mpeg ! queue ! aacparse ! mux.

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
WARNING: from element /GstPipeline:pipeline0/GstTSDemux:demux: Delayed
linking failed.
Additional debug info:
./grammar.y(506): gst_parse_no_more_pads ():
/GstPipeline:pipeline0/GstTSDemux:demux:
failed delayed linking some pad of GstTSDemux named demux to some pad of
GstQueue named queue1

I did use h264parse and aacparse in the pipeline, but a problem occurred
when linking the audio pad of tsdemux to queue.

The M2TS-to-MP4 pipeline works when linking audio to fakesink:

  gst-launch-1.0 filesrc location=src.ts ! typefind ! tsdemux name=demux !
queue ! h264parse ! mp4mux name=mux ! filesink location=sink.mp4 demux. !
audio/mpeg ! queue ! aacparse ! fakesink

How can I fix the M2TS-to-MP4 pipeline? Is this related to
https://bugzilla.gnome.org/show_bug.cgi?id=773357

Thank for help



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