crash when encoding

Thanks for taking the time to report this bug. Unfortunately, we are not able to fix and find the bug because your description of the bug didn't have enough information in it. You may find it helpful to read "How to report bugs effectively", http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. We'd be grateful if you would then provide a more complete description of the problem.

Could you please try to obtain a backtrace by following the instructions on http://wiki.ubuntu.com/DebuggingProgramCrash

I'll look into getting more info. Something that may help is the following.

i installed the flight 6 live cd on my other intel celeron machine. and
tried to convert
http://www.uni-duesseldorf.de/~ricke/matrix_xp/mxp_engl_l.zip<http://www.uni-duesseldorf.de/%7Ericke/matrix_xp/mxp_engl_l.zip>-
IT worked!

So I did a fresh install on my AMD Sempron 2800+ machine. then tired to
encode the same clip - segfault!
I downgraded to the hoard deb for ffmpeg (ffmpeg_0.cvs20050121-
1ubuntu1.1_i386.deb) . The conversion lasted longer, but again a segfault.
Also the latest deb from marillat also segfault (well it was worth a try).

Command used
FFMPEG -i <input file> -target pal-dvd dvd.mpg

So the problem seems to be AMD processor specifc.

I'm really confused why it worked on the intel box but not my main AMD pc. -
Any thoughts?

I'm not exerienced to do backtracing, but I'll try.

On 4/6/06, Reinhard Tartler <email address hidden> wrote:
>
> Thanks for taking the time to report this bug. Unfortunately, we are not
> able to fix and find the bug because your description of the bug didn't have
> enough information in it. You may find it helpful to read "How to report
> bugs effectively", http://www.chiark.greenend.org.uk/~sgtatham/bugs.html<http://www.chiark.greenend.org.uk/%7Esgtatham/bugs.html>. We'd
> be grateful if you would then provide a more complete description of the
> problem.
>
> Could you please try to obtain a backtrace by following the instructions
> on http://wiki.ubuntu.com/DebuggingProgramCrash
>
> ** Changed in: ffmpeg (Ubuntu)
> Status: Unconfirmed => Needs Info
> --
> crash when encoding
> https://launchpad.net/malone/bugs/38350
>

Looks like it is a h/w issue.
My system is a AMD Sempron 2800+ with 512mb of DDR400 ram. If I change the
ram speed in the bios down to DDR266 - FFMPEG encoding works. DDR333 or 400
both fail.
very strange. It used to work fine.

I guess I´ll close the bug report

On 4/10/06, Paul Precious <email address hidden> wrote:
>
> I'll look into getting more info. Something that may help is the
> following.
>
> i installed the flight 6 live cd on my other intel celeron machine. and
> tried to convert
> http://www.uni-duesseldorf.de/~ricke/matrix_xp/mxp_engl_l.zip<http://www.uni-duesseldorf.de/%7Ericke/matrix_xp/mxp_engl_l.zip>- IT worked!
>
> So I did a fresh install on my AMD Sempron 2800+ machine. then tired to
> encode the same clip - segfault!
> I downgraded to the hoard deb for ffmpeg (ffmpeg_0.cvs20050121-
> 1ubuntu1.1_i386.deb) . The conversion lasted longer, but again a segfault.
> Also the latest deb from marillat also segfault (well it was worth a try).
>
> Command used
> FFMPEG -i <input file> -target pal-dvd dvd.mpg
>
> So the problem seems to be AMD processor specifc.
>
> I'm really confused why it worked on the intel box but not my main AMD pc.
> - Any thoughts?
>
> I'm not exerienced to do backtracing, but I'll try.
>
>
> On 4/6/06, Reinhard Tartler <email address hidden> wrote:
> >
> > Thanks for taking the time to report this bug. Unfortunately, we are not
> > able to fix and find the bug because your description of the bug didn't have
> > enough information in it. You may find it helpful to read "How to report
> > bugs effectively", http://www.chiark.greenend.org.uk/~sgtatham/bugs.html<http://www.chiark.greenend.org.uk/%7Esgtatham/bugs.html>. We'd
> > be grateful if you would then provide a more complete description of the
> > problem.
> >
> > Could you please try to obtain a backtrace by following the instructions
> > on http://wiki.ubuntu.com/DebuggingProgramCrash
> >
> > ** Changed in: ffmpeg (Ubuntu)
> > Status: Unconfirmed => Needs Info
> > --
> > crash when encoding
> > https://launchpad.net/malone/bugs/38350
> >
>
>

may be a hardware issue. My CPU is a AMD Sempron 2800+. A bios change to make it a 2600+ and ffmpeg works. So it may be a cpu/chipset/memory sync issue that is causing the segfault.