I need to adjust to contrast of some mkv file I have tried this code:
ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i title00.mkv -c:v hevc_nvenc -b:v 5M -vf eq=contrast=1.0 output.mkv
but I get this error:
Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0' Error reinitializing filters! Failed to inject frame into filter network: Function not implemented Error while processing the decoded data for stream #0:0
If I run the some line without “-vf eq=contrast=1.0”:
ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i title00.mkv -c:v hevc_nvenc -b:v 5M output.mkv
the command work and don’t show any error message but don’t allow me to adjust the contrast.
There is a way to modify the contrast with nvidia hevc_nvenc codec ?