[FFmpeg-devel] [PATCH] libavformat/nutenc.c: Use ffv1 as default video encoder for NUT muxing

Michael Niedermayer michael at niedermayer.cc
Tue Oct 3 22:45:30 EEST 2017


On Mon, Oct 02, 2017 at 11:50:45PM +0200, Carl Eugen Hoyos wrote:
> 2017-10-02 23:18 GMT+02:00 Leo Izen <leo.izen at gmail.com>:
> > On 09/28/2017 04:51 PM, Michael Niedermayer wrote:
> >>
> >> On Wed, Sep 27, 2017 at 07:14:50PM -0400, Leo Izen wrote:
> 
> >>> -    .video_codec    = AV_CODEC_ID_MPEG4,
> >>> +    .video_codec    = AV_CODEC_ID_FFV1,
> >>>       .write_header   = nut_write_header,
> >>>       .write_packet   = nut_write_packet,
> >>>       .write_trailer  = nut_write_trailer,
> >>
> >> Why?
> >>
> >> also this breaks existing code and command lines
> >> which expect mpeg4 as default
> >
> > This was a patch I submitted as suggested by Mark
> > Thompson on IRC, 2017-09-27:
> >
> > [18:47:51] <thebombzen> while we're on automatic order, for NUT,
> > mpeg4 gets picked by default rather than ffv1
> 
> (The irc paste imo contradicts your claim above)
> 
> I don't think ffv1 is a useful default video encoder for nut.

yes
ffv1 is a great choice as default for lossless encoding.
but if lossless is not the goal then a lossless codec is not a good
default.


[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Dictatorship naturally arises out of democracy, and the most aggravated
form of tyranny and slavery out of the most extreme liberty. -- Plato
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