[mythtv] ffmpeg sync

Andrew Lyon andrew.lyon at gmail.com
Fri Nov 16 23:57:40 UTC 2007


On Oct 12, 2007 12:04 PM, Janne Grunau <janne-mythtv at grunau.be> wrote:

> On Friday 12 October 2007 11:47:57 Nick F wrote:
> > On 10/12/07, Janne Grunau <janne-mythtv at grunau.be> wrote:
> > > the next ffmpeg sync is overdue and working H.264 PAFF (since 9th
> > > of october) in ffmpeg is an exellent opportunity.
> >
> > Great news.  A quick (potentially dumb) question before I test the
> > patch tonight.  Will this also support MBAFF as used in BBC HD
> > H.264transmissions, or is is just PAFF?
>
> MBAFF is even without the patch supported though MBAFF and spatial
> direct isn't.
>
> > My one, and only, HD station is BBC HD via DVB-S, and I'd love to get
> > it working.  I tried last night (before this patch) on trunk svn
> > 14660, and it was 'almost' playing smoothly - so hoping this might
> > push me over the edge.
>
> If it were PAFF the frontend would have segfaulted in seconds. There are
> some general improvements in h264 decoding speed which might be enough,
> the multithreaded decoder scales good as long the stream uses multiple
> slices and and the supported deblocking types.
>
> Janne
>


Does the multithreaded patch spawn enough threads to load a quad core cpu ?

I notice:

+                int thread_count = 2;

Can that simply be changed to 4 for more threads?

Thanks
Andy
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