Cannot play videos with AC3 audio codec

Bug #1449984 reported by Michael Zanetti
38
This bug affects 6 people
Affects Status Importance Assigned to Milestone
Canonical System Image
Triaged
High
John McAleely
mediaplayer-app
Invalid
Undecided
Unassigned
media-hub (Ubuntu)
Triaged
High
Canonical Phone Foundations
media-hub (Ubuntu RTM)
Triaged
High
Unassigned

Bug Description

Nowadays, most of the videos are encoded in .mkv format, but the media player fails to play them.

Tags: patch
Revision history for this message
Jim Hodapp (jhodapp) wrote :

I just tested this and it is working just fine for my .mkv files. Can you attach one that doesn't work to this bug so that I can see if it's an issue with a specific file?

Changed in mediaplayer-app:
status: New → Incomplete
Revision history for this message
Michael Zanetti (mzanetti) wrote :
Changed in mediaplayer-app:
status: Incomplete → New
Revision history for this message
Jim Hodapp (jhodapp) wrote :

Confirmed that this example file plays sometimes but not reliably. It works better when running media-hub-server via gdb.

Changed in media-hub (Ubuntu):
status: New → Confirmed
Changed in mediaplayer-app:
status: New → Invalid
Changed in media-hub (Ubuntu):
assignee: nobody → Canonical Phone Foundations (canonical-phonedations-team)
Revision history for this message
Alfonso Sanchez-Beato (alfonsosanchezbeato) wrote :

The error is due to AC3 codec not being installed:

0:00:26.171799174 14659 0xb2f2c290 WARN uridecodebin gsturidecodebin.c:939:unknown_type_cb:<uridecodebin1> warning: No decoder available for type 'audio/x-ac3, framed=(boolean)true, rate=(int)48000, channels=(int)6, alignment=(string)frame'.
** Encountered a GST_STREAM_ERROR_CODEC_NOT_FOUND

Installing gstreamer1.0-libav solves the issue.

summary: - Cannot play back .mkv
+ Cannot play videos with AC3 audio codec
Revision history for this message
Alexey Kulik (doctor-rover) wrote :

I confirm, the bug is still actual. I use bq M10, rc-proposed/r174.
Tablet is a multimedia device to a great extent. And significant part of video files comes with AC3 tracks. So I believe that fixing this bug is quite important.

Jim Hodapp (jhodapp)
Changed in media-hub (Ubuntu RTM):
status: New → Confirmed
Changed in canonical-devices-system-image:
assignee: nobody → John McAleely (john.mcaleely)
status: New → Triaged
Changed in media-hub (Ubuntu):
status: Confirmed → Triaged
Changed in media-hub (Ubuntu RTM):
status: Confirmed → Triaged
Changed in media-hub (Ubuntu):
importance: Undecided → High
Changed in media-hub (Ubuntu RTM):
importance: Undecided → High
Changed in canonical-devices-system-image:
importance: Undecided → High
Revision history for this message
Devid Antonio Filoni (d.filoni) wrote :

As suggested by Alfonso on IRC (thank you!), I separated out a52dec plugin from gstreamer1.0-plugins-bad into a new gstreamer1.0-a52dec package, the latter has liba52-0.7.4 as dependency. Tested on mako, video posted in comment #2 works fine.

Revision history for this message
Jim Hodapp (jhodapp) wrote :

Alfonso, would it make sense to you to add this to the same silo as OPUS support or do you want to create a new one for this landing?

tags: added: patch
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