[mythtv] [PATCH] high speed smooth video v2

Ashley Bostock abostock at gmail.com
Thu Apr 14 06:59:12 UTC 2005


I watch a show yesterday at 1.2x the speed (which normally runs very
smooth) but with this patch I get very jolty motion, like its slowing
down then speeding up every second.  After watching the snow I noticed
on the command line that it had been spurting out prebuffering pauses
about 3 times a second...  I rarely go any faster than 1.4x otherwise
its too fast to tell what ppl are saying.  I think I'll revert the
patch on my system and stick with cvs for now.

On 4/13/05, Mark Spieth <mark at dclabs.com.au> wrote:
> no this patch is primarily for timestretch as the displayed frame sequence
> is not smooth when
> the display frame rate is > presented stream frame rate.
> try 1.6x with the prepatch method and you will see what I mean.
> my display has 60Hz so a pal stream is ok until > 1.2x
> then the warpfactor kicks in and every time video exceeds 30 frames you get
> a big jump.
> using Xv of course and audio sync.
> cheers
> mark
> 
> > I tried it last night but I didn't notice much difference, although
> > timestretch video has always been very smooth playback (for me
> > anyways) since it was first released.  I was hoping this was the patch
> > that was applied just pre myth 0.17 (which then got removed/broken for
> > the actual 0.17 release and ever since) which gave a smooth ~30 fps
> > when fast forwarding at 3x, 5x, 10x, 20x, etc...  Just wondering
> > whether it would take much to mod the patch to do this?
> >
> 
>


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