[mythtv] Latest svn BBC HD playback/recording failing

Mark Buechler mark.buechler at gmail.com
Sun Jan 11 14:43:49 UTC 2009


Hi

On Sun, Jan 11, 2009 at 7:06 AM, Per Heldal <heldal at eml.cc> wrote:

> 10.01.2009 18:01, Mark Buechler wrote:
> >
> > This is still an issue with Dish recordings from an R5000 box. The
> backend
> > waits too long for an IDR to come along and the frontend bulks. I've seen
> an
> > average of 10-15 seconds on the backend before a payload start message
> comes
> > up. Reversing commit 19094 gets around the issue.
> >
> > - Mark.
> >
> >
>
> You need to apply the diff in 19094 (not reverse it) to make the backend
> ignore IDR and solve the problem.
>
> I had to do the same using a Hauppauge HVR4000/DVB-S2 on Canal Digital
> Nordic (Norway) . I first tested by upping the 16sec (16000msec in the
> code) timer in the player to 10min and timed how long it took for the
> back-end to find an IDR-frame and start recording.  The results varied a
> bit between attempts on a channel, but more across the different
> channels. An average for 10 attempts differed from 18sec on the "best"
> channel to 7min52sec on the worst.
>
> //per
>

What I'm seeing is no IDR frames at all, only SLICE frames (type 1). I do
see a frame 0, but I'm also seeing 512 frames/primary key (I'm told) so
waiting for frame 0 could take several seconds.

- Mark.
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