[mythtvnz] atoms and ions

[Steve V]

> >
> >But is it of any use to us in NZ yet? At this popint my understanding is 
> >that Myth's VDPAU does not work well with our 720p >channels. I am hoping 
> >that this problem will be resolved soon.>
> >
> >Has anyone achieved very good decoding using VDPAU for TV One and TV2?
> >
> >For me TV3 is great with VDPAU, but the 720p channels require VDPAU off and 
> >the decoding done by the CPU. I expect >event the dual atom could not 
> >decode our 720p on the CPU.
> >
> >
> 
> Steve
> 
> Never had any problems with 720p playback with VDPAU.
> Using 1x hardware deinterlace setting but upscaling to 1080i60 to screen so 
> pointless ??
> Worked okay from the first offering (3 months ago).
> Almost perfect video on all channel recordings but not live. (nvidia-180.60 
> & mythtv fixes repos)
> TV1 video playback is very very good.
> Better than any LCD display except for the latest  maybe..
> 
> Last night recorded TV 1, 2 & 3 from 9 to 9:30.
> 15 seconds later could watch any of the 3 recordings no problem except audio 
> is junked.
> 
> LiveTV does not work (for me) since the nvidia 185.xx versions of JYA repos.
> Audio is broken except for AC3 (s/pdif output) and that is not perfect.
> Previous 180.44 build from JYA was very good.
> 
> The audio playback was perfect couple months ago.
> Could be ubuntu updates that broke this operation, it broke the LCDProc 
> again.
> 
> Three steps forward, two & half steps back...
> 
> Regards,
> Brett

Just in case I was imagining things, I rechecked and sure enough TV1 and TV2 are not good on Myth with VDPAU. A show which for me is a great example is Spooks 9:30 Mondays on One. It always has many portions where the motion breaks down or pixelates while the scene is panning.

I can play the same recording using mplayer with VDPAU or XBMC with VDPAU and I do not get the same breakup and pixelation.

Some things that may be different between our systems -
reception, I only just get Freeview|HD approx 60% signal reported. Perhaps if the signal is better you get a better recording and then there is no problem with playback - just theory.

What DVB-T card are you using, I am using the NOVA-T 500.

I have no problem with Live TV - well same applies to LiveTV it works fine as long as I do not use VDPAU for TV1 and TV2.

I have no problems with sound, I get good sound for all the HD channels.

I'll have to check what versions of Ubuntu, Myth and Nvidia I am running. But my versions are probably 1 or 2 months old. I try not to updat unless I really have to because enivitably an update causes many hours of work to get everything working again. 

This weekend I am setting up XBMC (have to install from source to get LATM-AAC sound support) and Mythbox to see if that is a workaround until VDPAU is sorted out for my situation.