[mythtv-users] Failed radio recordings from dvb-t with 0.26-fixes
John Pilkington
J.Pilk at tesco.net
Wed Apr 24 22:02:54 UTC 2013
On 24/04/13 22:03, Roger Siddons wrote:
>
> FWIW I've been using 0.26 on DVB-T (incl Radio 4) for 5 months with no
> significant issues (apart from 10833).
Yes, I had it on my laptop for several months and updated a home-build a
few times. The intention was to try it out there before switching the
main box from 0.25.3, and I had most of the things that bothered me
sorted out; there was no radio problem on that. Then it looked as if
disaster had struck and I made a series of large unpremeditated changes,
after which it seemed ok; but disk space was tight and I didn't check it
out thoroughly before making related changes on the main box. I ought
to check it now...
>
> However your latter issue does remind me of one, possibly related,
> incident (that I haven't got around to investigating properly):
> Successive recordings of the last hour of CBeebies failed to play (video
> buffer failed too many times) even though the filesize was good. The
> logs said Myth couldn't find any video codec parameters, I believe.
> However they would play fine whilst the recording was in progress. When
> my (3 min) padding recorded the MHEG data at channel end it somehow
> 'corrupted' the codec info so that the recording then became unplayable.
> Reducing the end padding solved that problem. That's obviously not the
> cause of your 9:30am failure but, to me, they raise questions about the
> 'new' ffmpeg in 0.26. Their forums may provide some clues...
Yes, I've seen this at both ends of the part-time channels. A
preliminary pass through mythDVBcut (Project-X based) almost always
fixes it, but I suppose that must depend on where in the recording it
finds its tables. It doesn't work on audio-only - and it won't expand a
564-byte recording into anything useful! Nor does it correct for the
switch to UTC, which only started making a difference here at the start
of this month. Luckily I only have to mentally subtract one hour...
Ho hum.
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