[FFmpeg-devel] [PATCH, v4 1/2] fftools/ffmpeg_filter: add -autoscale to disable/enable the default scale

[Michael Niedermayer]

On Sun, Jul 28, 2019 at 05:54:24PM +0800, Linjie Fu wrote:
> Currently, ffmpeg inserts scale filter by default in the filter graph
> to force the whole decoded stream to scale into the same size with the
> first frame. It's not quite make sense in resolution changing cases if
> user wants the rawvideo without any scale.
> 
> Using autoscale/noautoscale to indicate whether auto inserting the scale
> filter in the filter graph:
>     -noautoscale or -autoscale 0:
>                 disable the default auto scale filter inserting.
> 
> Update docs.
> 
> Signed-off-by: U. Artie Eoff <ullysses.a.eoff at intel.com>
> Signed-off-by: Linjie Fu <linjie.fu at intel.com>
> ---
>  doc/ffmpeg.texi         | 16 ++++++++++++----
>  fftools/ffmpeg.c        |  1 +
>  fftools/ffmpeg.h        |  4 ++++
>  fftools/ffmpeg_filter.c |  2 +-
>  fftools/ffmpeg_opt.c    |  8 ++++++++
>  5 files changed, 26 insertions(+), 5 deletions(-)

I think this is ok-ish but it would be more robust if encoders would
have a CODEC_CAP listing if they actually support changing resolution

Thanks

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

Old school: Use the lowest level language in which you can solve the problem
            conveniently.
New school: Use the highest level language in which the latest supercomputer
            can solve the problem without the user falling asleep waiting.
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