[mythtvnz] Freeview HD and transcoding trouble

[banksie at paradise.net.nz]

Quoting Andrew Walters <andrew at silverstream.net.nz>:

> TVOne and TV2 jerk slightly both before and after the transcode (sound
> is ok, and the jerking seems to be in the recording as it's always in
> the exact same places when viewing recordings), and TV3 plays back at
> half speed after transcoding (MPEG-4, with audio as MP3 48Kbps). 
> 
> When watching a transcoded TV3 program and ramping up the playback speed
> to 2x, the video is perfectly smooth but the audio is still terrible,
> making it unlistenable. 
> 
> I see I'm not the first with this TV3 problem (Banksie did you get it to
> go?) 

   Sadly no. I haven't had the time to chase the issue further (been cutting and
stacking firewood in my free time, thankfully finished with that now) and being
an Ubuntu/mythtv newcomer I am not entirely sure where to start with this as it
is. My thought was that the transcode program isn't correctly recognising the
sound sample rate or number of channels for TV3 - which given that TV3 is the
only NZ station doing 5.1 broadcasts (as far as I understand it) isn't too
surprising. The annoying thing is the video transcodes beautifully.

> PS one problem I solved myself but it may be handy for Googlers having
> something similar: it took a while to get the Hauppauge WinTV Nova-T 500
> card and Xen to play nicely, mythtv is in the dom0 but I had to use xen
> credit scheduler to limit my (only) domU to use 20% CPU max to stop
> frequent video corruption (xm sched-credit -d your-domU-name -c 20) 

Hmmm, I am getting oddness in my TV1 transcode/recording of 'New Tricks' that
seems to coincide with my epg update process running. When it occurs my audio
becomes very choppy and broken and stays this way for the rest of the episode.
Given that I have been recording TV1 shows a bit it and it only occurs with this
program says to me it might be a CPU resource issue. What were you getting when
Xen interferred?

Philip