[mythtv-commits] Ticket #12016: Watching in progress recording stutters

[MythTV]

#12016: Watching in progress recording stutters
-------------------------------------+-------------------------------------
     Reporter:  angela.schmid@…      |      Owner:
         Type:  Bug Report -         |     Status:  new
  General                            |  Milestone:  unknown
     Priority:  minor                |    Version:  0.27-fixes
    Component:  MythTV - Video       |   Keywords:  WatchingRecording
  Playback                           |  stutter
     Severity:  medium               |
Ticket locked:  0                    |
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 Since upgrading from 0.26-fixes to 0.27-fixes/master watching in progress
 recordings stutters.
 This happens with all mediatypes (720p, 1080i, SD) and is 100%
 reproducible with all in progress recordings.

 As soon as the scheduled recording is finished the stuttering finishes.
 Reusing and playing another finished recording where the file is linked to
 the in progress recording file there is no stuttering.

 I made the following test and attached the frontend.log (--loglevel debug
 -v general,playback)

 01:00 started a 15 minute recording
 01:05 watch in progress recording, stuttering
 01:15 recording finished, till the end no stuttering (Attempting to change
 from WatchingRecording to WatchingPreRecorded)
 01:20 watching finished

 01:30 watch finished (prerecorded) recording, no stuttering
 01:45 watching finished

 I tried to bisect the problem but had stack overflows and avfilter
 problems from 0.27-pre to 0.27-beta.
 0.27-alpha is the first version not crashing, but has stutter, so I
 stopped to bisect the problem further.


 The following dirty hack worked, although the recording only stops after
 finishing viewing. As it might produce other problems I don’t use it in
 production.
 {{{
 diff --git a/mythtv/libs/libmythtv/tv_play.cpp
 b/mythtv/libs/libmythtv/tv_play.cpp
 index 77858d0..8ecd918 100644
 --- a/mythtv/libs/libmythtv/tv_play.cpp
 +++ b/mythtv/libs/libmythtv/tv_play.cpp
 @@ -2210,6 +2210,10 @@ void TV::HandleStateChange(PlayerContext *mctx,
 PlayerContext *ctx)
      TVState ctxState = ctx->GetState();
      TVState desiredNextState = ctx->DequeueNextState();

 +    if(desiredNextState == kState_WatchingRecording)
 +       desiredNextState = kState_WatchingPreRecorded;
 +
      LOG(VB_GENERAL, LOG_INFO, LOC +
          QString("Attempting to change from %1 to %2")
              .arg(StateToString(nextState))
 }}}

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Ticket URL: <http://code.mythtv.org/trac/ticket/12016>
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