[x264-devel] Bug Report/Help?

[Kevin P. Jacobson]

Well, I took the plunge and created a XP install CD that has drivers for my SATA card, etc and installed XP.  I just ran two 1st-passes without fail.  I think the problem was related more to Vista than anything.

FWIW, I ran memtest86+ tonight, 4 full passes, tests 1-8 and no errors were reported.

As long as XP doesn't bug out on me, I think I will consider this case closed in my mind :)

Thanks for everyone's encouragement.

-Kevin

________________________________________
From: x264-devel-bounces at videolan.org [x264-devel-bounces at videolan.org] On Behalf Of Mathieu Monnier [manao at melix.net]
Sent: Tuesday, August 14, 2007 12:43 PM
To: Mailing list for x264 developers
Subject: Re: [x264-devel] Bug Report/Help?

> So just to confirm what your saying, even if you run x264 10 times with
> the exact same settings/source/everything, it reboots at different spots
> in the encode and not always at the same spot?  While I'm no expert on
> the inner workings of x264, I would venture to say that if thats the
> case its almost definitely not (directly) an x264 issue since in theory
> x264 should run basically identically for each of those runs.

Nope, since it's multithreaded. By default, when multithreaded, x264 is
still deterministic. However, macroblocks in concurrent frame aren't
encoded in the same order, and frames aren't encoded on the same CPU, so
crashes due to x264 could occur at different places ( that's why
multithreaded applications are harder to debug ).

However, a bug usually leads to a crash, not a reboot.

Regards,

Mathieu

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