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regie:regie_video [2021/04/19 15:05] – [Caractéristiques] mh | regie:regie_video [2021/09/30 17:11] – [Transcodage Vidéo] mh | ||
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*Couplé à des fonctions de zoom, définit les portée minimale/ | *Couplé à des fonctions de zoom, définit les portée minimale/ | ||
- | ---- | ||
+ | |||
+ | ---- | ||
===== NDI ===== | ===== NDI ===== | ||
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* mplayer (pour lecture vidéo) | * mplayer (pour lecture vidéo) | ||
- | ===== Transcodage Vidéo | + | ---- |
+ | ===== FFMPEG | ||
- | De manière générale '' | + | === Re-encode into Apple Pro Res === |
- | + | ||
- | === Ré-Encoder un fichier en Apple Pro Res === | + | |
<code bash> | <code bash> | ||
$ffmpeg -i input.mp4 -vcodec prores -acodec copy output.mov | $ffmpeg -i input.mp4 -vcodec prores -acodec copy output.mov | ||
</ | </ | ||
+ | |||
+ | === Rotate video === | ||
+ | |||
+ | <code bash> | ||
+ | $ffmpeg -i input-video.mp4 -vf " | ||
+ | </ | ||
+ | |||
+ | *0 – means rotate by 90 degrees counterclockwise and flip | ||
+ | *1 – means rotate by 90 degrees clockwise | ||
+ | *2 – means rotate by 90 degrees counterclockwise | ||
+ | *3 – means rotate by 90 degrees clockwise and flip | ||
+ | |||
+ | === Control Quality === | ||
+ | |||
+ | The CRF option sets the encode quality. The bit-rate will vary as necessary to provide a consistent quality throughout the video. 51 being the worst to 0 being the best (lossless). Usually around 15-20 is a good ratio quality vs filesize. | ||
+ | |||
+ | You can use the '' | ||
+ | |||
+ | To create a 1min clip starting 1min into the video: | ||
+ | |||
+ | <code bash> | ||
+ | $ffmpeg -i input-video.mp4 -crf=15 -ss=60 -t=60 output-video.mp4 | ||
+ | </ | ||
+ | |||
=== ffmpeg commands === | === ffmpeg commands === |