Opened 5 months ago

#6299 new enhancement

Add option for filler / nal-hrd cbr to h264_vaapi encoder similar to the libx264 encoder

Reported by: mmvb Owned by:
Priority: wish Component: avcodec
Version: git-master Keywords: vaapi h264
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

I'm not sure to which extend this is possible with VAAPI, but it would be nice to see an option for adding filler/padding similar to the -nal-hrd cbr and -filler options of the libx264 encoder.

It seems that Intel QSV can already do this using its CBR rate control mode, but QSV is only available on just a few platforms because of the limitations of Intel Media Server Studio (only supports specific CPU series, this is an artificial limitation set by Intel), it's also a complicated process to get it working on Linux if you happen to have a supported CPU.

I want to use this option to create a true constant bitrate encode for RTMP streaming, without using a software encoder like libx264.

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