[FFmpeg-trac] #8254(avcodec:new): ffmpeg encoding with nvenc broken by a commit
FFmpeg
trac at avcodec.org
Fri Oct 11 13:17:47 EEST 2019
#8254: ffmpeg encoding with nvenc broken by a commit
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Reporter: hydra3333 | Owner:
Type: defect | Status: new
Priority: important | Component: avcodec
Version: git-master | Resolution:
Keywords: nvenc | Blocked By:
regression |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by oromit):
The -refs option used to be used to control the dpb size of nvenc.
With the latest generation of cards and SDKs, nvidia added support for
actually using multiple reference frames.
That series of patches brings nvenc in line with libx264 in what the -refs
option does.
As of e929b2f248a9c49761475e07d1a089e05912d1c6, the old function of -refs
has its own option, -dpb_size.
Since -refs actually controlling the dpb size very likely was not what
users of the option expected or intended, it was decided to go for this
slightly breaking change.
And it seems like it worked in making you aware of the -refs option not
doing what you expected it do to.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8254#comment:7>
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