Bug#540424: [Mlt-devel] SIGV with a DIF (DV) movie file (PAL)

Reinhard Tartler siretart at tauware.de
Wed Aug 12 19:47:30 UTC 2009

Dan Dennedy <dan at dennedy.org> writes:

> On Tue, Aug 11, 2009 at 10:33 PM, Reinhard Tartler<siretart at tauware.de> wrote:

>> Thanks. Is someone able to reproduce this bug with ffplay? I've tried,
>> but didn't manage to create segfaults out of it.
> No, it did not segfault for me either, but it did become unresponsive.

this is normal behavior. ffplay does not quit automatically at end of
file, but you can exit it with pressing 'q'.

> MLT does not pass data to libavformat other than filename, timestamp,
> context pointer, and flags. Libavformat is inherently handling the
> file reading.

Hm, this answer surprises me. My understanding of ffplay is that it is a
very thin wrapper around avformat and avcodec.

>  In any case, while the analysis might be interesting for
> some, before I put any more of my time into it, because I am quite
> confident it will result in a patch for libavformat, I must know
> whether you are more interested in patching FFmpeg v0.5 and thereby
> maintaining your own branch of FFmpeg or just upgrading the package
> from upstream sometime in the near future.

I have no plans to stop tracking the 0.5 release branch, so yes, we'd
need a patch for the 0.5 release. In fact, the 0.5 release branch *is*
updated with updates, and there is even a 0.5.1 release in the pipe.

Reinhard Tartler, KeyID 945348A4

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