[mythtv] [PATCH] Reinitialize deinterlace filter on video change

[Jarod Wilson]

On Sunday 19 September 2004 10:30, Jarod Wilson wrote:
> On Sunday 19 September 2004 06:26, Doug Larrick wrote:
> > Jarod Wilson wrote:
> > > Crap. ABC tanked again. It seems to work best when I have bob set for
> > > the deint type, and went back to being crappy when I tried to set
> > > linear blend deint. More testing to follow...
> >
> > ABC, being progressive scan (720p), shouldn't require a deinterlacer *at
> > all*.  If it's being called, that might have something to do with your
> > difficulties.
>
> I know, that's why I found it particularly odd. Even odder still, while
> experimenting last night, I couldn't ever get back to the point where I had
> smooth playback on that channel... And I swear that the verbose output is
> claiming that it did detect a progressive-scan channel and no deint filters
> were initialized (and it still tanks if ABC is the first channel played).
> But then I've been trying quite a few different playback resolution and
> deint/nodeint combos... I'll keep playing.

Okay... The plot thickens. I was mistaken, I have another channel that 
(occasionally, at least) broadcasts in 720p, that being Fox. Today's Seahawks 
game, playing right now, is in 720p, and plays back flawlessly right now. 
However, it has the same audio problem that my CBS station has (muted, 
underwater sound) if you go straight to that channel, and is fine if I change 
to another channel (besides CBS) and back. CPU usage stis around 60-80% the 
entire time, so I know there's no processor bottleneck.

I've also captured a few short recordings of both ABC and CBS, which when 
played back in Myth are hosed (horrid stutter on ABC and muted, underwater 
sound on CBS). When played back with mplayer, they are just fine. So it looks 
like maybe I've got two different problems I'm coming up against, one being 
that the entire stream for ABC isn't being handled correctly by Myth for some 
reason, and the other being that audio doesn't initialize correctly on CBS 
(or Fox), but works if I change to another channel and back.

Would it be of any use for me to post sample clips for someone else to play 
with? I'm thinking I need to finally dust off my 5-years-dormant C++ and read 
NuppleVideoPlayer.cpp myself... :-)

-- 
Jarod C. Wilson, RHCE
jcw at wilsonet.com

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