On 2014-04-17 21:03, Bálint Réczey wrote:
[..]
>> Thus for people who want to upgrade to xbmc13 on this platform, you might 
>> want to have this bug resolved first ;)
>> This could be related to VDPAU, or just a regression in XBMC. Googling for 
>> the error does pop up
>> some similar reports, but the typical answer is to disable VDPAU/VDAPI, this 
>> while XBMC12 works fine.
[..]
> This problem has been reported as #742896 , but using the radeon driver.
> I planned setting up an nVidia config, but thanks to you I don't have to.

Hence, why filing a bug is a good thing ;)

(also because google indexes them really well, and then people might
find a solution easier or avoid upgrading as they can see there is a
problem.... it is in the experimental branch for a reason ;)

> Upstream's position is that it is a Libav bug, since the video plays
> fine with the embedded ffmpeg copy shipped with vanilla XBMC.

Makes sense;

(I quite understand btw why they do not like maintaining multiple video
libraries)

> I have to agree with them thus I hereby reassign both bugs to libav.
> If this is a result of API difference between FFmpeg and Libav, please
> help me out, too.

I had not noticed that libav10 was being used; I checked and indeed it
is libav10 that it is linked against. Is libav10 a requirement, as
otherwise linking to libav9 might be an option that might just work ;)
(and would exclude in a way if the fault is in xbmc or libav...)

Reinhard Tartler wrote:
> I am having a hard time seeing from this report what the problem is.

I guess that you mean what is causing it rather than the problem, as the
problem is easy: no rendering as something fails (likely libav)

With no crash dump or otherwise extended details that is indeed going to
be hard. One would have to either modify xbmc to print out all the
arguments passed to the API calls.

At least, the good thing is that it is checking the results of the calls
and hence reporting an error.

> What API is at fault here? can you provide a minimal example program
> that demonstrates what the problem is?

I am just a user in this case, the "minimal program" would also be quite
hard to do I think... as well video stuff is never minimal.

Now... if you had a minimal example program, I would be quite willing to
try that out of course and see if that exhibits the same problem.

I don't seem to find a simple example in the libav sources.

Greets,
 Jeroen


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