[mythtv-users] Audio dropouts .29

Peter Bennett pb.mythtv at gmail.com
Sun Nov 25 21:44:51 UTC 2018



On 11/25/18 4:20 PM, Jack McGee wrote:
> I blew out a working 16.04 and Mythtv .29 frontend.
>
>
> Installed 18.04 and am having an issue playing back recordings. Audio 
> dropouts of a few seconds every minute or so.
>
>
>
> the frontend log is at
> https://pastebin.com/G69jK6EY
>
>
> This happens using XFCE or Gnome3.
>
> Here is some of the frontend log:
>
> ov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: I 
> CoreContext tv_play.cpp:426 (StartTV) TV::StartTV(): Entering main 
> playback loop.
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I CoreContext screensaver-dbus.cpp:82 (Inhibit) ScreenSaverDBus: 
> Successfully inhibited screensaver via org.freedesktop.ScreenSaver. 
> cookie 1641343987. nom nom
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> W CoreContext screensaver-dbus.cpp:87 (Inhibit) ScreenSaverDBus: 
> Failed to disable screensaver: Type of message, '(ss)', does not match 
> expected type '(susu)'
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I CoreContext screensaver-x11.cpp:149 (DisableDPMS) 
> ScreenSaverX11Private: DPMS Deactivated 1
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I CoreContext mythplayer.cpp:803 (SetScanType) Player(0): Enabled 
> deinterlacing
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I CoreContext mythrender_vdpau.cpp:616 (CheckOutputSurfaces) VDPAU: 
> Added 2 output surfaces (total 4, max 4)
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I PreviewGeneratorQueue previewgeneratorqueue.cpp:381 
> (GeneratePreviewImage) PreviewQueue: Requesting preview for 
> '2051_20181125143000.ts_0x0_-1s'
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I PreviewGeneratorQueue previewgeneratorqueue.cpp:394 
> (GeneratePreviewImage) PreviewQueue: Requested preview for 
> '2051_20181125143000.ts_0x0_-1s'
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I CoreContext mythplayer.cpp:2192 (SetBuffering) Player(0): Waiting 
> for video buffers...
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> N CoreContext mythplayer.cpp:2230 (PrebufferEnoughFrames) Player(0): 
> Waited 104ms for video buffers AAAAAAffALAAAA
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I CoreContext mythplayer.cpp:2044 (AVSync) Player(0): Video is 3.46993 
> frames ahead of audio,#012#011#011#011doubling video frame interval to 
> slow down.
> Nov 25 15:02:14 mythfrontendlr mythfrontend.real: mythfrontend[2914]: 
> I CoreContext mythplayer.cpp:2192 (SetBuffering) Player(0): Waiting 
> for video buffers..

Try -v playback and see if the "Waiting for video buffers" continue to 
happen. If so the decoding is not fast enough. Check your playback 
profile, make sure if using standard that you set number of CPUs to 4.


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