[FFmpeg-devel] [PATCH v3 2/2] lavf: add prores bitstream demuxer and muxer

[hung kuishing]

> From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf Of
> Andreas Rheinhardt
> Sent: Thursday, July 27, 2023 1:11 AM
> To: ffmpeg-devel at ffmpeg.org
> Subject: Re: [FFmpeg-devel] [PATCH v3 2/2] lavf: add prores bitstream
> demuxer and muxer
> 
> hung kuishing:
> >> From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf
> Of
> >> Derek Buitenhuis
> >> Sent: Wednesday, July 26, 2023 8:55 PM
> >> To: ffmpeg-devel at ffmpeg.org
> >> Subject: Re: [FFmpeg-devel] [PATCH v3 2/2] lavf: add prores
> bitstream
> >> demuxer and muxer
> >>
> >> On 7/26/2023 10:28 AM, hung kuishing wrote:
> >>> Signed-off-by: clarkh <hungkuishing at outlook.com>
> >>> ---
> >>>  libavformat/Makefile     |  2 ++
> >>>  libavformat/allformats.c |  2 ++
> >>>  libavformat/proresdec.c  | 66
> >> ++++++++++++++++++++++++++++++++++++++++
> >>>  libavformat/rawenc.c     | 13 ++++++++
> >>>  4 files changed, 83 insertions(+)
> >>>  create mode 100644 libavformat/proresdec.c
> >>
> >> At this point I am giving this a strong NAK.
> >>
> >> Both my initial comment[1] and subsequent comment[2] about the
> first
> >> one being ignore, have been ignored. It is a simple question.
> >
> > Sorry for not replying to your question in time!
> > This patch originated from a need in my work to wrap the ProRes
> bitstream generated by ffmpeg into another mov wrapper.
> 
> So there are no files in the wild for this? Then there is no point in this. Or
> is this something that other mov wrappers (you meant muxers!?)
> accept?
> (Couldn't you just have used e.g. nut (or even mov itself) to temporarily
> store the ProRes data and then pipe this to to the foreign
> muxer?)

Hi, Andreas Rheinhardt:
Let me briefly describe what I needed at that time:
I have another prores encoder and another mov muxer, what I need to do are:
1. use "another mov muxer" to encapsulate prores bitstream generated by ffmpeg.
2. use ffmpeg to encapsulate prores bitstream generated by "another prores encoder" .

I know I can implement them by calling the ffmpeg api,  but how can I implement them by ffmpeg tool? 
So, I developed these patches.