[FFmpeg-devel] [PATCH 08/29] avcodec/mpeg4videoenc: mark as limited color range only

[Michael Niedermayer]

On Sun, Dec 10, 2017 at 02:14:15PM +0100, Paul B Mahol wrote:
> lavf-mkv changes only because of metadata.
> 
> Signed-off-by: Paul B Mahol <onemda at gmail.com>
> ---
>  libavcodec/mpeg4videoenc.c |  1 +
>  libavcodec/mpegvideo_enc.c |  4 ++++
>  tests/ref/lavf/mkv         |  8 ++++----
>  tests/ref/seek/lavf-mkv    | 44 ++++++++++++++++++++++----------------------
>  4 files changed, 31 insertions(+), 26 deletions(-)

This changes the amount of noise in:

./ffmpeg -f lavfi -i testsrc=s=500x300 -vf noise=alls=40 -vcodec mpeg4 -qscale 2 -vframes 3 noise.avi

Looking at the format convertion it seems that an additional scaler
is used to convert to gbrp which is then converted again

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

What does censorship reveal? It reveals fear. -- Julian Assange
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