[FFmpeg-user] libutvideo causes Segmentation fault

[Carl Eugen Hoyos]

Johann Rekowski <johann.rekowski <at> googlemail.com> writes:

> 
> On 3/10/2013 7:15 PM, Carl Eugen Hoyos wrote:
> > Johann Rekowski <johann.rekowski <at> googlemail.com> writes:
> >
> >> libutvideo:
> >> # git source: git://github.com/qyot27/libutvideo.git
> >>    ./configure \
> >>    --prefix=/usr \
> >>    --enable-shared \
> >>    --disable-static \
> >>    --optlevel=3 \
> >>    --enable-pic \
> >>    --enable-asm=x64
> > I can reproduce the crash you are seeing, removing
> > "--enable-asm=x64" from the configure line works
> > here.

The alternative is to compile for x86 but you have 
to remove all leading underscores from 
utv_core/*.asm
Giving the overall situation of libutvideo, I think 
it is safe to assume that ffv1 is a magnitude more 
stable / maintained / whatever.

> Thanks for the fix, are there any plans on adding 
> support for the asm  optimizations in ffmpeg?

Are the resulting files not supported?

> >> I thought that FFv1 is deprecated
> 
> > Could you elaborate? This is the first time I read 
> > this (and I should really know).
> 
> Wikipedia article "http://en.wikipedia.org/wiki/FFV1" states:
> Latest release 
> <http://en.wikipedia.org/wiki/Software_release_life_cycle> v1.1 / 
> 16 April 2006; *6 years ago*

As you can see here, v1.1 was released in January:
http://ffmpeg.org/download.html

> And here "http://en.wikipedia.org/wiki/Snow_%28codec%29" it says

The only similarity between Snow and FFV1 is that both 
were developed by the same person, the current FFmpeg 
maintainer Michael Niedermayer.

If you really want to work on libutvideo, please understand 
that this is definitely the wrong mailing list...

Carl Eugen