[mythtv-users] Is it possible add delay to sound?

Fredrik Lingvall fredrik.lingvall at gmail.com
Thu Nov 1 08:14:11 UTC 2012


On 10/31/12 22:39, IsmoT wrote:
> >I used to have a similar issue to what you are describing. I had to keep
> >adjusting the sound synchronization. Then on a seemingly unrelated 
> issue I
> >came across this link:
> >
> >http://www.mythtv.org/wiki/Frame_display_timing
> >
> >My frontend was using usleep for its timing during playback but then 
> I got
> >the real time clock (RTC) device configured so Myth could run with it 
> and
> >now the playback is fully synchronized.
> >
> >Hope it helps.
> >
> >-Marco
>
>
> Thanks for a great link. I tried to setup RTC, but I get following error:
>
> VSYNC: RTCVideoSync: Could not set RTC frequency, Inappropriate ioctl 
> for device.
>
> No matter how I set permissions for /dev/rtc or what value I set for 
> max-user-freq.
>
> It is not myth problem as I can see it on mplayer log too.
>
> Anyone ideas how to fix this?
>
>
I have also this problem (on 0.26).

I start the FE using:
# mythfrontend -v playback 1>frontend.log 2>frontend_err.log

and then

# grep -5  "Video timing" frontend.log
2012-11-01 09:05:31.778037 I  OSD: Loaded window osd_program_editor
2012-11-01 09:05:31.783016 I  OSD: Loaded window osd_debug
2012-11-01 09:05:31.783023 I  OSD: Loaded OSD: size 1920x1080 offset 0+0
2012-11-01 09:05:31.783059 I  OSD: Created window aa_OSD_SUBTITLES
2012-11-01 09:05:31.783474 I  Player(0): ClearAfterSeek(0)
2012-11-01 09:05:31.802525 I  Player(0): Video timing method: DRM
2012-11-01 09:05:31.802533 I  Player(0): Display Refresh Rate: 59.999 
Video Frame Rate: 25.000
2012-11-01 09:05:31.802539 I  Player(0): SetFrameInterval ps:1 scan:1
2012-11-01 09:05:31.818855 I  playCtx: StartPlaying(): took 0 ms to 
start player.
2012-11-01 09:05:31.818867 I  TV: Created player.
2012-11-01 09:05:31.818880 I  TV: StartPlayer(0, WatchingLiveTV, main) 
-- end ok

I'm having some issues with the Intel video driver too

http://www.gossamer-threads.com/lists/mythtv/users/531954

which may be related.

/Fredrik

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