The following command will apply the full range flag to all the clips in "I:\ffmpeg\MATERIAL\source".
Save the text as a .bat file:
for %%i in (I:\ffmpeg\MATERIAL\source\*.mp4); do "I:\ffmpeg\bin\ffmpeg.exe" -i "%%i" -bsf:v h264_metadata=video_full_range_flag=1 -c:v copy -c:a copy "%%i_CONVERTED.mp4"
Obviously you have to install ffmpeg:
https://www.gyan.dev/ffmpeg/builds/
Source/Credits:
https://www.nvidia.com/en-us/geforce/...
Music:
Paul Leonard-Morgan - Mining Minds (Cyberpunk 2077 OST)