#11256: How to use "curves" filter with "hwupload" in FFmpeg?
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Reporter: elias tsolis | Owner: (none)
Type: task | Status: new
Priority: normal | Component: avfilter
Version: 7.0 | Resolution:
Keywords: curves | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by elias tsolis):
i have read, and tried different combinations, nothing worked.
this does not work -->
curves=blue='0/0 0.5/0.58 1/1'
or curves=all='0/0,0.5/0.58,1/1'
or curves=all='0/0:0.5/0.58:1/1'
inside this command:
for vids in *.avi; do ffmpeg -hwaccel vaapi -hwaccel_output_format
yuv420p -vaapi_device /dev/dri/renderD128 -i "$vids" -vf 'curves=all='0/0
0.5/0.58
1/1',setpts=2*PTS,format=nv12,hwupload,scale_vaapi=w=2560:h=1440:format=nv12'
-strict experimental -c:v hevc_vaapi -b:v 20M -video_track_timescale 90000
"a_${vids/.*}.mp4"; done;
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Ticket URL: <https://trac.ffmpeg.org/ticket/11256#comment:4>
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