[mythtv-commits] Ticket #8839: DTS Passthrough stutters/choppy/laggy on trunk and if unchecked then crashes playback
MythTV
mythtv at cvs.mythtv.org
Mon Aug 30 04:30:17 UTC 2010
#8839: DTS Passthrough stutters/choppy/laggy on trunk and if unchecked then
crashes playback
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Reporter: mitch.capper@… | Owner: jyavenard
Type: defect | Status: new
Priority: major | Milestone: unknown
Component: MythTV - Audio Output | Version: Trunk Head
Severity: medium | Keywords: DTS, stutter, SPDIF
Ticket locked: 0 |
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I am using trunk(25907) and when I play a video in mythvideo with DTS I
run into an issues. My setup is set to ALSA:iec857:CARD=intel,DEV=0 for
audio output device with DD and DTS checked and speaker config on 5.1
without upconverting checked. Playing normal media is fine but when
playing something with DTS while the receiver is showing DTS received the
audio stutters heavily (multiple times a second I would say). Playing
through mplayer with -afm hwac3 has the DTS audio working just fine.
Playback without DTS enabled also works fine.
*) if Stereo mode is enabled instead of 5.1 (as spdif can't pass standard
surround I believe) audio works giving stereo sound but no DTS is passed
through (even though its checked)
*) If DTS is unchecked but Dolby Digital is left checked (some suggested
this would convert between the two) I just get lots of entries of:
getBufferedOnSoundcard() called with pcm_handle == NULL
followed by:
2010-08-29 10:08:35.156 Player(4): Waited 100ms for video buffers
AAAAAAaAAAAALaaaL
Several times
in the log and no audio and video does not even play. Dolby Digital
encoded items however do play fine (and receiver shows it as receiving DD
signal)
I tried various debug modes but don't see anything that would seem to hint
towards why there is a stutter.
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Ticket URL: <http://svn.mythtv.org/trac/ticket/8839>
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