mxf, because the containers QuickTime, Matroska and Material eXchange Format are allowed for the various flavours of the ProRes 4 codec. The extension of the output files must be one of. For silent videos you can replace -c:a copy by -an for video with sound you may choose to re-encode with another audio codec (for example -c:a pcm_s16le is often chosen). The audio codec is specified by -codec:audio, which is usually abbreviated as -c:a ( -codec:a or -c:audio are also possible). The possible video profile values for the ProRes codec prores_ks are: 1 The video codec is specified by -codec:video, which is usually abbreviated as -c:v ( -codec:v or -c:video are also possible). And, as usual in the computer world, “YUV” stands for the colour space Y′C BC R, not for Y′UV as used by PAL video. Yet it works best for “YUV” video file with 4:2:2 chroma subsampling or “YUV” video with 4:4:4 chroma subsampling, regardless of the container in which the input data are actually wrapped. The command line works for every input video format. c:a copy \ output_file Command syntax ffmpeg starts the command -i input_file path, name and extension of the input file -c:v prores_ks sets the video codec ProRes -profile:v profile_number chooses the variant of ProRes -c:a copy re-encodes the audio stream using the same audio codec output_file path, name and extension of the output file Discussion c:a copy \ output_file General command ffmpeg \ Transcode a video file into an Apple ProRes 422 HQ file for post-production purposes.
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