[mythtv] recent svn freeze on ffwd/rwnd (was Re: Cutlist editor is broken in 0.21 'bleeding' builds)
J.Pilk at tesco.net
Sun Feb 18 15:33:47 UTC 2007
Martin Ebourne wrote:
> On Thu, 15 Feb 2007 12:39:47 +0000, David Matthews wrote:
>> I upgraded to the latest svn recently and started seeing these symptoms
>> when fast forwarding a recording or skipping forward. After a few of
>> these log messages the frontend would freeze and the only option was to
>> kill it. I traced the problem to the ffmpeg update in 12645 and some
>> code that was added to libs/libavcodec/mpeg12.c . I ifdef'd it out and
>> it fixed the problem. It doesn't seem to have had any adverse effects.
>> I don't know enough about the interaction between mpeg12.c and the
>> higher levels to know the right way of dealing with this so I'm not
>> proposing this as a patch to myth. I suspect the problem has to do with
>> mpeg streams with errors. Due to having a slightly noisy signal there
>> are always a few mpeg errors reported in my log.
> I've having the same problem, random hang when skipping in a dvb
> recording. Our signal's pretty good though so I'm not convinced on the
> errors in the stream reason. Also worked just fine for years and only
> started doing this last Sunday when I updated to svn head again. It does
> it a lot when skipping ads now.
> Thanks for the patch/hack I'll try it out and see if it helps.
My OP was about cutlist editing problems after r12545 and before r12674.
I'm now on r12782. Editing often hangs and the only mode of escape that
I have found is to kill the frontend.
After that, if a lossless transcode of the original recording goes to
completion - which doesn't always happen - it appears that the
transcoded file can be edited without problems. I don't know if this is
a result of rewriting the search table, or of stripping off some of the
extra data streams, but it does suggest that corrupt data is
contributing to the problem.
HTH, John P
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