[FFmpeg-user] FFv1: newer ffmpeg builds create larger files?

Michael Niedermayer michaelni at gmx.at
Mon Jun 18 00:03:06 CEST 2012


On Mon, Jun 04, 2012 at 07:31:34PM +0200, Peter B. wrote:
> On 06/04/2012 02:56 AM, Michael Niedermayer wrote:
> > On Mon, Jun 04, 2012 at 01:22:27AM +0200, Peter B. wrote:
> >> Hm... I don't see any information about the bitstream parameters.
> >> I've tried 2 things with "-debug 1":
> >> 1) calling ffprobe on the original
> >> 2) transcoding the original as before
> > [...]
> >> Is there something I've misunderstood/overlooked?
> > ffmpeg -debug 1 -i ffv1file -f null -
> >
> Thank you! Interesting commandline :)
> 
> Interestingly, this showed "coder:0" for the original (=smallest) file,
> whereas using "-coder 0" resulted in larger files than "-coder 1" in my
> tests.
> 
> When I checked files encoded with "-coder 1", the above command output
> "coder:2" - I've verified this behavior, and all files encoded with
> "-coder 1" are being shown with "-coder 2". Why is that?

The difference between coder type 1 and 2 are documented in the spec
coder type 2 performs better than 1 in all cases i remember
so its used by default when range coding is requested

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I do not agree with what you have to say, but I'll defend to the death your
right to say it. -- Voltaire
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