[mythtv-users] stuttering / slow video audio using VDPAU w mythbuntu14.04 on Dual Core 1.86 GHz Atom D2550 nvidia GT520M

Thu May 1 04:21:45 UTC 2014

Did you try to watch tv using xbmc ? See if it works.

On Wed, Apr 30, 2014 at 10:17 PM, Anthony Hill <arhill at gmail.com> wrote:

> Hey all,
>
> Please excuse the repost - but I've had no TV for almost 2 weeks - I (and
> the kids) are getting frantic !
>
> ..to reiterate -  I;ve got this killer problem - with VDPAU and audio
> enabled, video and audio stutter and play real slow on the latest mythbuntu.
>
> I've tried all the available nvidia drivers (from the hardware drivers
> menu), messed with the audio buffers, created scripts to spin the CPU to
> make sure it doesnt drop too low, and tried every combination of audio
> output devices and each VDPAU profile. Audio is just standard analog stereo
> out the front headphone / speaker jack.
>
> The only things that have made any significant difference are :-
>
> * disable audio. Video is smooth and full speed using all VDPAU profiles
> for HD and SD video and TV if I use the null audio driver.
> * disable VDPAU. Sound and video are fine, as long as I dont play HD video
> or TV.
>
> ..this is a stock mythbuntu system - no crazy drivers from weird
> repositories or anything. The hardware has been awesome on older mythtv's
> using VDPAU.
>
> Totem and XBMC both play HD video fine. mplayer is a bit crap tho. (audio
> sync is all over the place)
>
> I'm surprised no one else is having these problems - I would have thought
> this hardware would have been a pretty popular frontend - and as I said -
> its a stock standard mythbuntu install.
>
> ..I am at a loss - should I raise a ticket ?
>
> Thanks.
>
> btw. Here is a repost of the logs I collected by watching live SD TV,
> VDPAU slim profile, with alsa default audio.
>
> Both the audio and the video were very stuttery and slow. 1/2 speed or
> less :-
>
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:1058 (TV) TV: Creating TV object
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: N
> CoreContext mythmainwindow.cpp:2638 (PauseIdleTimer) Suspending idle timer
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:1275 (Init) TV: Created TvPlayWindow.
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2201 (HandleStateChange) TV: Attempting to change
> from None to WatchingLiveTV
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythcorecontext.cpp:423 (ConnectCommandSocket) MythCoreContext:
> Connecting to backend server: 10.0.100.10:6543 (try 1 of 1)
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: N
> CoreContext tv_play.cpp:2270 (HandleStateChange) TV: Spawning LiveTV
> Recorder -- begin
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: N
> CoreContext tv_play.cpp:2277 (HandleStateChange) TV: Spawning LiveTV
> Recorder -- end
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2298 (HandleStateChange) TV: playbackURL(myth://
> 10.0.100.10:6543/1560_20140428105853.mpg) cardtype(DUMMY)
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: E
> CoreContext audio/audiooutputalsa.cpp:172 (GetPCMInfo) ALSA:
> snd_pcm_info_get_card: Operation not permitted
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: N
> CoreContext audioplayer.cpp:164 (ReinitAudio) AudioPlayer: Enabling Audio
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythrender_vdpau.cpp:1689 (CreatePresentationSurfaces) VDPAU:
> Created 2 output surfaces.
> Apr 28 20:59:28 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythrender_vdpau.cpp:411 (Create) VDPAU: Created VDPAU render
> device 1920x1080
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythplayer.cpp:1780 (InitAVSync) Player(1): Video timing
> method: USleep with busy wait
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:5595 (StartPlayer) TV: Created player.
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2459 (HandleStateChange) TV: Changing from None to
> WatchingLiveTV
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2471 (HandleStateChange) TV: State is LiveTV & mctx
> == ctx
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2473 (HandleStateChange) TV: UpdateOSDInput done
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2475 (HandleStateChange) TV: UpdateLCD done
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2477 (HandleStateChange) TV: ITVRestart done
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2550 (HandleStateChange) TV: Main UI disabled.
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:411 (StartTV) TV: Entering main playback loop.
> Apr 28 20:59:29 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythrender_vdpau.cpp:597 (CheckOutputSurfaces) VDPAU: Added 2
> output surfaces (total 4, max 4)
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext avformatdecoder.cpp:1898 (ScanStreams) AFD: codec AC3 has 2
> channels
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext avformatdecoder.cpp:2378 (OpenAVCodec) AFD: Opened codec
> 0x22e5160, id(AC3) type(Audio)
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: W
> CoreContext mythpainter.cpp:36 (Teardown) MythPainter: 5 images not yet
> de-allocated.
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythpainter_vdpau.cpp:108 (ClearCache) VDPAU Painter: Clearing
> VDPAU painter cache.
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythrender_vdpau.cpp:1689 (CreatePresentationSurfaces) VDPAU:
> Created 2 output surfaces.
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythrender_vdpau.cpp:411 (Create) VDPAU: Created VDPAU render
> device 1920x1080
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: N
> CoreContext mythplayer.cpp:523 (CheckExtraAudioDecode) Player(1): Forcing
> decode extra audio option on (Video method requires it).
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext avformatdecoder.cpp:2378 (OpenAVCodec) AFD: Opened codec
> 0x1949580, id(MPEG2VIDEO) type(Video)
> Apr 28 20:59:31 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext audio/audiooutputbase.cpp:792 (Reconfigure) AOBase: Opening
> audio device 'default' ch 2(2) sr 48000 sf 32 bit floating point reenc 0
> Apr 28 20:59:32 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythrender_vdpau.cpp:597 (CheckOutputSurfaces) VDPAU: Added 2
> output surfaces (total 4, max 4)
> Apr 28 20:59:37 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2201 (HandleStateChange) TV: Attempting to change
> from WatchingLiveTV to None
> Apr 28 20:59:37 zeddy mythfrontend.real: mythfrontend[10855]: W
> CoreContext mythpainter.cpp:36 (Teardown) MythPainter: 5 images not yet
> de-allocated.
> Apr 28 20:59:37 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext mythpainter_vdpau.cpp:108 (ClearCache) VDPAU Painter: Clearing
> VDPAU painter cache.
> Apr 28 20:59:37 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:2459 (HandleStateChange) TV: Changing from
> WatchingLiveTV to None
> Apr 28 20:59:37 zeddy mythfrontend.real: mythfrontend[10855]: I
> CoreContext tv_play.cpp:413 (StartTV) TV: Exiting main playback loop.
> Apr 28 20:59:37 zeddy mythfrontend.real: mythfrontend[10855]: N
> CoreContext mythmainwindow.cpp:2643 (PauseIdleTimer) Resuming idle timer
>
> --
> Regards,
>
> Anthony Hill
>
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