[FFmpeg-user] segfault in ffmpeg when including yadif in chain

[Carl Eugen Hoyos]

Misha Penkov <misha.penkov <at> gmail.com> writes:

> 
> On 8 August 2012 15:30, Carl Eugen Hoyos <cehoyos <at> ag.or.at> wrote:
> > Misha Penkov <misha.penkov <at> gmail.com> writes:
> >
> >>   libavutil      51. 66.101 / 51. 65.100
> >>   libavcodec     54. 50.100 / 54. 44.100
> >>   libavformat    54. 22.101 / 54. 19.100
> >>   libavdevice    54.  2.100 / 54.  2.100
> >>   libavfilter     3.  5.102 /  3.  3.100
> >
> > While this may indicate a (important) bug, I would still
> > strongly recommend you simply recompile (and consider
> > using static linking for ffmpeg this time).
> 
> I recompiled using --disable-shared and --disable-stripping, and the
> problem went away.
> 
> Why does it only happen when shared libraries are used?

The problem has (probably) nothing to do with shared vs 
static, but that - as you can see - your version above was 
compiled against one version of libav* but another version 
was loaded at runtime.
This should in theory work - that is why I said this may 
be an important bug - but I am not sure how to reproduce 
here (and it definitely would take some time) and you can 
relatively easily fix it for you by recompiling with static 
linking.

Carl Eugen