ffmpeg h264_vaapi video encodingFFmpeg extract clip - stream frame rate differs from container frame rate...
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ffmpeg h264_vaapi video encoding
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it look like ffmpeg and h264_vaapi codec are broken in the newest version 4 because they don’t honor the -qp setting. -qp with any value don’t change the bitrate which is terrible high. Only setting the bitrate option directly -b works. Does someone know a way around it.
Problem could be replicated with simple command:
ffmpeg -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf ‘format=nv12,hwupload’ -c:v h264_vaapi -qp 30 output.mp4
linux video ffmpeg h.264
asked Feb 7 at 6:40
nx01nx01
11
add a comment |
it look like ffmpeg and h264_vaapi codec are broken in the newest version 4 because they don’t honor the -qp setting. -qp with any value don’t change the bitrate which is terrible high. Only setting the bitrate option directly -b works. Does someone know a way around it.
Problem could be replicated with simple command:
ffmpeg -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf ‘format=nv12,hwupload’ -c:v h264_vaapi -qp 30 output.mp4
linux video ffmpeg h.264
asked Feb 7 at 6:40
nx01nx01
11
add a comment |
it look like ffmpeg and h264_vaapi codec are broken in the newest version 4 because they don’t honor the -qp setting. -qp with any value don’t change the bitrate which is terrible high. Only setting the bitrate option directly -b works. Does someone know a way around it.
Problem could be replicated with simple command:
ffmpeg -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf ‘format=nv12,hwupload’ -c:v h264_vaapi -qp 30 output.mp4
linux video ffmpeg h.264
asked Feb 7 at 6:40
nx01nx01
11
it look like ffmpeg and h264_vaapi codec are broken in the newest version 4 because they don’t honor the -qp setting. -qp with any value don’t change the bitrate which is terrible high. Only setting the bitrate option directly -b works. Does someone know a way around it.
Problem could be replicated with simple command:
ffmpeg -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf ‘format=nv12,hwupload’ -c:v h264_vaapi -qp 30 output.mp4
linux video ffmpeg h.264
linux video ffmpeg h.264
asked Feb 7 at 6:40
nx01nx01
11
asked Feb 7 at 6:40
nx01nx01
11
asked Feb 7 at 6:40
nx01nx01
11
asked Feb 7 at 6:40
nx01nx01
11
asked Feb 7 at 6:40
nx01nx01
11
11
add a comment |
add a comment |
1 Answer
1
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oldest
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This was repaired in ffmpeg's commit f4d7bd6cdbcf9027a36a73531baf7e3885644ee6 and unfortunately that commit is still only available in the git master branch. Hopefully it will be part of ffmpeg-4.1.2; backporting that commit to earlier versions looks like a huge undertaking.
Until ffmpeg-4.1.2 you can either compile the git master yourself, or install a nightly build from the ffmpeg site.
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
add a comment |
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1 Answer
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1 Answer
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active
oldest
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votes
This was repaired in ffmpeg's commit f4d7bd6cdbcf9027a36a73531baf7e3885644ee6 and unfortunately that commit is still only available in the git master branch. Hopefully it will be part of ffmpeg-4.1.2; backporting that commit to earlier versions looks like a huge undertaking.
Until ffmpeg-4.1.2 you can either compile the git master yourself, or install a nightly build from the ffmpeg site.
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
add a comment |
This was repaired in ffmpeg's commit f4d7bd6cdbcf9027a36a73531baf7e3885644ee6 and unfortunately that commit is still only available in the git master branch. Hopefully it will be part of ffmpeg-4.1.2; backporting that commit to earlier versions looks like a huge undertaking.
Until ffmpeg-4.1.2 you can either compile the git master yourself, or install a nightly build from the ffmpeg site.
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
add a comment |
This was repaired in ffmpeg's commit f4d7bd6cdbcf9027a36a73531baf7e3885644ee6 and unfortunately that commit is still only available in the git master branch. Hopefully it will be part of ffmpeg-4.1.2; backporting that commit to earlier versions looks like a huge undertaking.
Until ffmpeg-4.1.2 you can either compile the git master yourself, or install a nightly build from the ffmpeg site.
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
This was repaired in ffmpeg's commit f4d7bd6cdbcf9027a36a73531baf7e3885644ee6 and unfortunately that commit is still only available in the git master branch. Hopefully it will be part of ffmpeg-4.1.2; backporting that commit to earlier versions looks like a huge undertaking.
Until ffmpeg-4.1.2 you can either compile the git master yourself, or install a nightly build from the ffmpeg site.
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
answered 19 mins ago
Patrice LevesquePatrice Levesque
66549
66549
add a comment |
add a comment |
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