I have also tested -vf 'scale=out_range=full' and -vf 'pp=al:f' (see the log below) but in both cases the result fish3.jpg was unchanged from fish.jpg, so apparently nothing was done.

I have applied it per RGB channel using variations on this command line: ffmpeg -i fish.jpg -vf 'format=rgb24,extractplanes=r+g+b,histeq=strength=.1,histeq=strength=.1,histeq=strength=.1,mergeplanes=0x001020:gbrp' fish3.jpgīut since it tries to flatten the histogram, it always gives a much different (unacceptable) result for example, the imgur image whose code is eHL51.jpg (not enough reputation for link). The only filter I can find is 'histeq', which equalizes (flattens) rather than normalizes the contrast. Is there an ffmpeg filter which can normalize the RGB channels of every individual frame of a video? It is also possible to rotate videos with FFmpeg: ffmpeg -i example-video.mp4 -vf 'transpose=2 ' output-rotate.The following ImageMagick command line normalizes the RGB channels of an image individually, so that in each channel, the smallest value maps to 0 and the largest value maps to 255: convert fish.jpg -channel all -contrast-stretch 0.003x0.003% fish2.jpg

The concat parameter here combines your files. Then, run the following command: ffmpeg -f concat -i my-video-list. Enter the list of videos you want to merge into a. Imagine you have multiple clips encoded with the same codec.

scale: You can specify the scale sizes you want in your output with this parameterįFmpeg also allows you to combine multiple videos.

-vf: This parameter works the same as the -filter:v argument seen above.

The following command will resize the video to a size you want: ffmpeg -i example-video.mp4 -vf scale=1920:1080 output-scale.mp4 Sometimes you also need to change the scale of the video. Editing videos doesn't end with just trimming and cutting.

Ffmpeg filter video example