AW: failed link of audio to ac3parse

[Bernhard Graaf]

The audiostreams seams to be x-raw (not ac3).

Try to use your pipeline without the ac3 parser and decoder.

Voaacenc sink pad has the x-raw capabilities.

 

Bernhard

 

  _____  

Von: gstreamer-devel [mailto:gstreamer-devel-bounces at lists.freedesktop.org]
Im Auftrag von Rand Graham
Gesendet: Dienstag, 27. November 2018 21:51
An: Discussion of the development of and with GStreamer
Betreff: RE: failed link of audio to ac3parse

 

Can someone tell from the logs what the problem with linking the audio is?

 

Thanks,

Rand

 

From: gstreamer-devel [mailto:gstreamer-devel-bounces at lists.freedesktop.org]
On Behalf Of Rand Graham
Sent: Tuesday, November 13, 2018 11:34 AM
To: Discussion of the development of and with GStreamer
<gstreamer-devel at lists.freedesktop.org>
Subject: failed link of audio to ac3parse

 

Hello,

 

I am trying to find out why tsdemux fails to link the audio in the pipeline
below. 

The source has ac3 audio. 

The tsdemux finds the audio track. 

Gstreamer attempts to link tsdemux to ac3parse. 

Why does gstreamer say the caps are incompatible?

 

gst-launch-1.0 -v -e mpegtsmux name=m ! hlssink  target-duration='15'
udpsrc multicast-iface=lo  uri=udp://231.8.6.7:5309  ! tsdemux  ! ac3parse !
avdec_eac3 ! audioconvert ! voaacenc bitrate=128000 ! m.

 

0:00:00.432638221  8327      0x1305400 INFO               structure
gststructure.c:2597:gst_structure_get_valist: Expected field 'channel-mask'
in structure: audio/x-raw, rate=(int){ 8000, 11025, 12000, 16000, 22050,
24000, 32000, 44100, 48000, 64000, 88200, 96000 }, channels=(int)1,
layout=(string)interleaved;

0:00:00.433040355  8327      0x1305400 INFO        GST_ELEMENT_PADS
gstutils.c:1227:gst_element_get_compatible_pad:<ac3parse0> Could not find a
compatible pad to link to tsdemux0:video_0_0031

0:00:00.433082164  8327      0x1305400 INFO                GST_PADS
gstutils.c:1035:gst_pad_check_link: trying to link tsdemux0:audio_0_0033 and
ac3parse0:sink

0:00:00.433321928  8327      0x1305400 INFO               structure
gststructure.c:2597:gst_structure_get_valist: Expected field 'channel-mask'
in structure: audio/x-raw, rate=(int){ 8000, 11025, 12000, 16000, 22050,
24000, 32000, 44100, 48000, 64000, 88200, 96000 }, channels=(int)1,
layout=(string)interleaved;

0:00:00.433674575  8327      0x1305400 INFO        GST_ELEMENT_PADS
gstelement.c:920:gst_element_get_static_pad: found pad ac3parse0:sink

0:00:00.433713938  8327      0x1305400 INFO                GST_PADS
gstutils.c:1588:prepare_link_maybe_ghosting: tsdemux0 and ac3parse0 in same
bin, no need for ghost pads

0:00:00.433753875  8327      0x1305400 INFO                GST_PADS
gstpad.c:2378:gst_pad_link_prepare: trying to link tsdemux0:audio_0_0033 and
ac3parse0:sink

0:00:00.434008825  8327      0x1305400 INFO               structure
gststructure.c:2597:gst_structure_get_valist: Expected field 'channel-mask'
in structure: audio/x-raw, rate=(int){ 8000, 11025, 12000, 16000, 22050,
24000, 32000, 44100, 48000, 64000, 88200, 96000 }, channels=(int)1,
layout=(string)interleaved;

0:00:00.434310938  8327      0x1305400 INFO                GST_PADS
gstpad.c:2434:gst_pad_link_prepare: caps are incompatible

 

 

Regards,

Rand

 

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