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ffmpeg.md

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ffmpeg

rotate a video 90 degrees

ffmpeg -i in.mov -vf "transpose=1" out.mov

resize a gif

Resize in.gif to be 320 px wide and maintain aspect ratio.

ffmpeg -i in.gif -vf scale=320:-1 out.gif

concat gifs

Note: might need to convert gifs to another format first, and then convert them back again at the end.

ffmpeg -f concat -i files.txt -codec copy all.mov

make a video from frames