Opened 10 years ago

Closed 10 years ago

#8532 closed defect (fixed)

5.1 sound setting generates static

Reported by: scram69@… Owned by: JYA
Priority: minor Milestone: unknown
Component: MythTV - Audio Output Version: Unspecified
Severity: high Keywords:
Cc: Ticket locked: no

Description

When 5.1 sound is selected in Setup>General Settings, the OS X frontend sees the AC3 audio rapidly switch back and forth between stereo or mono and 6 channels (sometimes many times per frame) generating loud static: 2010-06-04 20:01:15.884 AFD: AC3 changed from 6 to 2 channels (frame 51) 2010-06-04 20:01:15.895 AFD: AC3 changed from 2 to 6 channels (frame 51) 2010-06-04 20:01:15.932 AFD: AC3 changed from 6 to 2 channels (frame 53) 2010-06-04 20:01:15.933 AFD: AC3 changed from 2 to 6 channels (frame 53)

This behavior is observed when playing back any recording from any channel, as well as DVD and Blu-ray rips via MythVideo?.

More complete log attached, as well as sample clips recorded from PBS and CBS.

Attachments (2)

mfe_-v_audio_AC3_switching_log.txt (6.3 KB) - added by scram69@… 10 years ago.
mythfrontend -v audio log
mfe_023fixes_25019.txt (12.9 KB) - added by scram69@… 10 years ago.
mythfrontend -v audio log for r25019

Download all attachments as: .zip

Change History (5)

Changed 10 years ago by scram69@…

mythfrontend -v audio log

comment:1 Changed 10 years ago by JYA

Status: newinfoneeded_new

Remove AC3 channel parsing in NVP ; this may have been required at some stage, but this is something ffmpeg already does. This should fix ticket #8532. Original patch by Mark Spieth.

Please try with revision r24987 and report if you're still having the problem (it shouldn't the bit of code creating your issue in now completely gone)

Changed 10 years ago by scram69@…

Attachment: mfe_023fixes_25019.txt added

mythfrontend -v audio log for r25019

comment:2 Changed 10 years ago by scram69@…

I tried again on a number of recordings and rips using r25019. Unfortunately, I still get the same behavior - see log attached.

comment:3 Changed 10 years ago by JYA

Resolution: fixed
Status: infoneeded_newclosed

You're running 0.23-fixes. Upgrade to trunk or wait for 0.24.

this change will not be backported

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