[FFmpeg-devel] [PATCH] ffv1enc: Make ffv1.3 non experimental

Michael Niedermayer michaelni at gmx.at
Sat Aug 17 13:33:27 CEST 2013

On Sat, Aug 17, 2013 at 08:27:14AM +0200, Reimar Döffinger wrote:
> On 17.08.2013, at 05:00, Michael Niedermayer <michaelni at gmx.at> wrote:
> > The fate tests change as they used 1.2 previously
> It's fairly minimal, but is it expected that every single frame becomes larger?

1.3 adds 32bit CRCs per slice by default (can be disabled),
it adds slice headers to allow decoding one slice without the others
an additional slice size field is added to make it possible to find
slices within corrupted surroundings.

these add up to about 57bit per slice more
at 50 frames and 4 slices thats 1425 byte which comes close to the
actual difference, so i would say that explains the difference


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Asymptotically faster algorithms should always be preferred if you have
asymptotical amounts of data
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