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Change video colour to black and white
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ffmpeg -i input_file -filter_complex hue=s=0 -c:a copy output_file
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A basic command to alter colour hue to black and white using filter_complex (credit @FFMPEG via Twitter).
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+ - ffmpeg
- starts the command
+ - -i input_file
- path, name and extension of the input file
+ - -filter_complex hue=s=0
- uses filter_complex command to set the hue to black and white
+ - -c:a copy
- copies the encode settings of the input_file to the output_file
+ - output_file
- path, name and extension of the output_file
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An alternative that preserves interlacing information for a prores 422hq file generated, for example, from a tape master (credit Dave Rice):
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ffmpeg -i input_file -c:v prores_ks -flags +ildct+ilme -map 0 -c:a copy -profile:v 3 -vf hue=s=0 output_file
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+ - ffmpeg
- starts the command
+ - -i input_file
- path, name and extension of the input file
+ - -c:v prores_ks
- encodes the video to ProRes (prores_ks marks the stream as interlaced, unlike prores)
+ - -flags +ildct+ilme
- ensures that the output_file has interlaced field encoding, using interlace aware discrete cosine transform and interlace aware motion estimation
+ - -map 0
- ensures ffmpeg maps all streams of the input_file to the output_file
+ - -c:a copy
- copies the encode settings of the input_file to the output_file
+ - output_file
- path, name and extension of the output file
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