[FFmpeg-devel] [PATCH v4]avocdec/nvenc: Reconfigure bitrate on the fly

Timo Rothenpieler timo at rothenpieler.org
Sat May 5 14:41:33 EEST 2018

Am 05.05.2018 um 02:00 schrieb Carl Eugen Hoyos:
> 2018-05-04 10:32 GMT+02:00, Timo Rothenpieler <timo at rothenpieler.org>:
>> I'm not sure if actual resolution changes are even supported
>> by avcodec.
> There are better (read: DVB) samples but I can't find them atm:
> https://trac.ffmpeg.org/raw-attachment/ticket/1507/Wrong_aspect_after_resolution_change.rmvb

I was under the impression that the ones in DVB/mpegts work by ending 
one stream, and starting another one? So essentially spinning up an 
entire new de/encoder, and not by just changing the width/height in the 
AVCodecContext mid stream, hoping the encoder does something reasonable?

At least libx264.c does not check for width/height changes in its 
reconfigure function.

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