[FFmpeg-devel] [PATCH] avfilter/frames: Ensure frames are writable when processing in-place

[Soft Works]

> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf Of
> Nicolas George
> Sent: Monday, 27 September 2021 14:10
> To: FFmpeg development discussions and patches <ffmpeg-
> devel at ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH] avfilter/frames: Ensure frames
> are writable when processing in-place
> 
> Soft Works (12021-09-27):
> > With the introduction of subtitle filtering, subsequent video
> frames
> > which are sharing the same data won't be as rare as this happened
> > to occur yet.
> > Ensuring per-frame uniqueness when data is modified is not only
> important
> > to avoid issues in the future, but a common API requirement anyway.
> >
> > Signed-off-by: softworkz <softworkz at hotmail.com>
> > ---
> 
> NAK, redundant.

Why?