[mythtv-users] Raspberry Pi 3 frontend not quite getting there

[Alistair Grant]

On Sat, Oct 15, 2016 at 12:01:56PM -0500, mythtv wrote:
> On 10/15/2016 10:30 AM, Peter Bennett wrote:
> > On 10/15/2016 10:22 AM, mythtv wrote:
> >> I, too, have trouble reaching the perfect playback, although mine is
> >> with hockey.  Same thing, when the camera pans, there's an occasional
> >> stutter.  I followed the same instructions and have tried all of the
> >> appropriate optimizations from the wiki.  I chalked it up to not quite
> >> ready for prime time just yet and will continue to wait.  I'm hoping it
> >> can be achieved soon.  I like the IR receiver ability of the pi and the
> >> small form factor that I can basically Velcro to the back of a TV.
> >> _
> > Try the option -v playback on mythfrontend and see if there are any log
> > messages at the time of the stutter. If you can supply a sample video
> > file I can check it and see if I can do something to improve it.
> >
> > Peter
> >
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> I'll do that soon.  I've repurposed the pi3 for something at work at the
> moment.  When I get it back, I'll try grabbing some logs and making them
> available.  The video might be harder to get.  I loaded it up in VLC and
> noticed that it too had trouble playing.  Turns out the video has
> unaligned frames.  This is recording from an HDPVR at 720p.  I have to
> find a video cutter (the total file size is over 5GB), otherwise,
> re-encoding might actually fix the problem.  I was also surprised to see
> that myth is now recording to .ts files instead of .mpg.  Not sure when
> that switch occurred.  It doesn't affect anything, just a curiosity to me.
> 
> Does anyone know of a good free mpeg cutter I can use?

avidemux makes this quite easy.  Just choose "copy" as the codec for
video and audio, and be sure to start on a key frame.

http://fixounet.free.fr/avidemux/

HTH,
Alistair