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mp4に変換後の色落ちをffmpegにて軽減する方法

Last updated at Posted at 2016-06-24

一度動画ファイルを ffmpeg にて連番書き出しし、再度 ffmpeg にて色空間を指定し再結合する。

$ ffmpeg -i input.mov -r 30 output_%5d.png
$ ffmpeg -r 30 -i output_%5d.png -x264opts colorprim=bt709:transfer=bt709:colormatrix=smpte170m output.mp4

参考: ffmpeg - Color Correcting MP4/Webm videos - Stack Overflow

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