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https://stackoverflow.com/questions/27568254/how-to-extract-1-screenshot-for-a-video-with-ffmpeg-at-a-given-time


동영상 포맷 변경

mov to mp4

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Code Block
ffmpeg -i movie.mov -vcodec copy -acodec copy out.mp4

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Code Block
title폴더내 모든 mov 를 mp4 로 변경
for i in *.mov; do f=`basename "$i" .mov`;ffmpeg -i "$i" -vcodec copy -acodec copy "$f.mp4";done


m4v

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Code Block
ffmpeg -i input.m4v out.mp4

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