[FFmpeg-devel] [PATCH] avfilter: add rawdump filter

[Fu, Linjie]

> -----Original Message-----
> From: ffmpeg-devel [mailto:ffmpeg-devel-bounces at ffmpeg.org] On Behalf
> Of Paul B Mahol
> Sent: Wednesday, July 10, 2019 15:55
> To: FFmpeg development discussions and patches <ffmpeg-
> devel at ffmpeg.org>
> Cc: Eoff, Ullysses A <ullysses.a.eoff at intel.com>
> Subject: Re: [FFmpeg-devel] [PATCH] avfilter: add rawdump filter
> 
> On 7/10/19, U. Artie Eoff <ullysses.a.eoff at intel.com> wrote:
> > This filter enables raw frames to be dumped to a
> > file before they are sent through the auto-inserted
> > scaler filter and useful when you want unscaled
> > raw frames in an output file.
> >
> 
> Why?
> 
> -f rawvideo doesn't work for you?

unscaled raw video could be dumped through this filter in resolution changing cases.

IMHO, it will be great if there are some options available to disable/enable the auto scaling filter
in pipeline, thus the whole stream doesn't need to be scaled into the same size of the first frame. 
The difference in scale algorithms will make it hard to compare the output with other decoder.

- linjie