Opened 20 hours ago
Last modified 3 hours ago
#11256 new task
How to use "curves" filter with "hwupload" in FFmpeg?
Reported by: | elias tsolis | Owned by: | |
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Priority: | normal | Component: | avfilter |
Version: | 7.0 | Keywords: | curves |
Cc: | MasterQuestionable | Blocked By: | |
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description (last modified by )
currently, i use this, however, i am unable to run it specifying points in curves. Is any option to use a gnuplot file directly? or to extract smplayer options on brightness, gamma etc. to use them with ffmpeg somehow?
for vids in *.avi; do ffmpeg -hwaccel vaapi -hwaccel_output_format yuv420p -vaapi_device /dev/dri/renderD128 -i "$vids" -vf 'curves=preset=lighter,setpts=2*PTS,format=nv12,hwupload,scale_vaapi=w=2560:h=1440:format=nv12' -strict experimental -c:v hevc_vaapi -b:v 20M -video_track_timescale 90000 "a_${vids/.*}.mp4"; done;
debian trixie linux,
ffmpeg version 7.0.2-3
Change History (7)
comment:1 by , 20 hours ago
Version: | unspecified → 7.0 |
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comment:2 by , 20 hours ago
Description: | modified (diff) |
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comment:3 by , 13 hours ago
Cc: | added |
---|---|
Component: | undetermined → avfilter |
Keywords: | curves added |
Summary: | how i can use curves options in hwupload in ffmpeg ? → How to use "curves" filter with "hwupload" in FFmpeg? |
Type: | defect → task |
comment:4 by , 9 hours ago
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;
comment:5 by , 7 hours ago
͏ Your Unix Shell syntax is invalid: bad quoting.
͏ To embedded literal `'` within such quoting: use `'\''`.
͏ E.g. "a'b", as 'a'\''b'.
͏ You may also look at:
͏ https://www.shellcheck.net/
͏ https://www.gnu.org/software/bash/manual/bash.html#Quoting
͏ https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html
͏ https://pubs.opengroup.org/onlinepubs/9799919799/xrat/V4_xcu_chap01.html#tag_23_02_02
͏ ; for reference.
comment:6 by , 5 hours ago
dont work
ffmpeg -hwaccel vaapi -hwaccel_output_format yuv420p -vaapi_device /dev/dri/renderD128 -i b.mp4 -vf 'curves=all='\"0/0 0.5/0.58 1/1'\",format=nv12,hwupload,format=nv12' -strict experimental -c:v hevc_vaapi cp.mp4
'curves=all=‘\’0/0 0.5/0.58 1/1‘\’ 'curves=all='\'0/0 0.5/0.58 1/1'\' 'curves=all=\'0/0 0.5/0.58 1/1\' 'curves=all='\"0/0 0.5/0.58 1/1\"' 'curves=all=''0/0 0.5/0.58 1/1\''
comment:7 by , 3 hours ago
͏ You typed wrong content.
͏ `''` is not `"` even if they may look the same under some fonts.
͏ Or use `"` as the outer quote to avoid the havoc.
͏ (but caveat its implication on "$" alike)
͏ Hint: Try with `echo` first.
͏ Interpreted filter-chain:
͏ curves=preset=lighter,
͏ setpts=2*PTS,
͏ format=nv12,
͏ hwupload,
͏ scale_vaapi=w=2560:h=1440:format=nv12
͏ Refer:
͏ https://ffmpeg.org/ffmpeg-filters.html#curves
͏ etc.