bytedeco/javacv
Voir sur GitHubUsing FFmpegFrameFilter with zscale and tonemapping
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#1 389 ouverte le 21 mars 2020
enhancementhelp wanted
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Description
When I attempt to create the following filter:
"zscale=t=linear:npl=100,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=mobius:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p,scale=1920:1080"
the filter throws an exception when attempting to start:
org.bytedeco.javacv.FrameFilter$Exception: avfilter_graph_parse_ptr() error -22
The filter in question works fine from ffmpeg command line, but I'm using this filter with frame grabber. Any suggestions?