[FFmpeg-devel] R: [PATCH] MXF format fix for Sony Station compatibility

Maksym Veremeyenko verem at m1stereo.tv
Thu Oct 26 17:00:34 EEST 2017

26.10.2017 16:43, Carl Eugen Hoyos пише:
> 2017-10-24 12:46 GMT+02:00 Maksym Veremeyenko <verem at m1stereo.tv>:
>> 24.10.2017 13:35, Development at axeltechnology.com пише:
>>>> The patch contains trailing whitespace and tabs, both cannot be
>>>> committed to the FFmpeg repository.
>>>> You can use tools/patcheck to find the issues.
>>> Cleaned up the spaces/tabs and added braces around else statemens.
>> similar patchset was proposed early (with more descriptors):
>> http://ffmpeg.org/pipermail/ffmpeg-devel/2016-April/193395.html
>> http://ffmpeg.org/pipermail/ffmpeg-devel/2016-June/194829.html
> Did you send an updated patch after Michael's comments?
> This would be appreciated very much!

but first patch *Extend Generic/CDCI picture essence descriptors with 
additional items* could be applied to current head without any notices.

second patch was rejected:

> this is not ok
> it breaks API and ABI, MpegEncContext can change without major
> version bumps, its not even guranteed the
> priv_data is a MpegEncContext also the data can be stream copied
> you can only take information from AVStream, AVCodecParameters,
> AVCodecContext side data and the AVPacket data and extradata

to make it compatible to Michael's comments, some parameters should be 
get from mpeg2 stream in *mxf_parse_mpeg2_frame*:

     *Constant B Picture Flag*
     *Identical GOP*
     *Maximum B Picture Count*

but i have no enough skills to rework it

Maksym Veremeyenko

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