Comment 50 for bug 1373221

Hi,

2015-01-28 2:26 GMT+00:00 vedavata <email address hidden>:
>> What do you mean by "hang up" ?
>> Does the control window becomes unresponsive?
>
> Yes.
> And MKV-files is stopped to fiil.
>
>> From the logs I notice is that the capture ring buffer gets full,
>> this usually means frames are not being encoded fast enough.
>> Guvcview tries to compensate for this, by reducing the frame rate.
>
> I tried 30, 25, 20, 15 fps -- the same result: when MVK-files reeaces 2
> GB, guvcview hangs up...

OK, I'll test this again in another machine.

>
>> Also the matroska muxer caches audio frames so that matching audio and
>> video packets are stored in the same cluster.
>
> I doubt, that AVI is better... :-)

It's not, but it's a completely different muxer, it doesn't care about
timestamps, so it just writes packages immediately to file.

>
>> In this case for some reason video frames are not being fed to the muxer, so audio keeps filling the cache.
>> Have you tried reducing the resolution, or fps?
>
> Yes. 30, 25, 20, 15 fps... 960, 800, 640 pixels... [On a Core i5
> processor.]
>
>> You should also test with different codecs and with the avi muxer,
>
> Yes, tried MPEG2, H264... The same... 2 GB... (on any FS: ntfs, ext3...)
>
>> also maybe with audio disabled, just to check if it makes any
> difference.
>
> I will try without audio...
> Thank you.

Ok. I'll wait for your results.

>
> Should i open a new bug?

Yes please, this is a different bug.

Regards,
Paulo

>
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> https://bugs.launchpad.net/bugs/1373221
>
> Title:
> guvcview crashed with SIGSEGV in get_ctrl_by_id()
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