[FFmpeg-devel] ALAC encoder is not bitperfect

Brent Huisman brenthuisman
Mon Apr 13 16:50:30 CEST 2009

Hey Jai,

I've used several different builds, including the new ffmpeg 0.5. Any
and all versions I tried exhibit this behaviour. Also any and all
source wave files I use have this. Have you tried bitcomparing
yourself? I've read more reports of these consistent mismatches, so
I'm pretty sure you'll experience them as well.



On 2008-12-18 09:44, Jai Menon wrote:
> Hi,
> On Wed, Dec 17, 2008 at 3:06 AM, Brent Huisman <brenthuisman@???> wrote:
> > When comparing source wavs with ALAC encoded files, I consistently get
> > framecount (and playtime) mismatches. It does not depend on the
> > sourcefile, it mismatches time and time again. Is this a known bug?
> Please report the svn revision you are using, the build platform,
> configure flags etc. Also upload a snip of the original
> wav file to incoming.mplayerhq.hu.
> http://ffmpeg.org/bugreports.html should be more descriptive.
> I'm sure this is not a known bug, because otherwise I wouldn't have
> submitted the encoder for inclusion in the ffmpeg codebase :-)
> > If not, can this be fixed?
> I'm sure it can, once you give us the information we need.
> Jai

More information about the ffmpeg-devel mailing list