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

[Jean-Yves Avenard]

On 1 May 2014 14:17, 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 ?

there's nothing in the log you've posted indicating a problem.

For a work around, modify the VDPAU Normal profile
and change the decoding method from vdpau to ffmpeg. Leave the
rendering method to vdpau...

at least you should be able to play most files.