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Ffmpeg crf not working4/15/2023 crf constant_rate_factor A parameter of 18 means a “visually lossless” compression. preset preset_value A slower encoding preset means a better compression rate. ![]() c:a copy \ output_file Command syntax ffmpeg starts the command -i input_file path, name and extension of the input file -c:v libx264 The library libx264 re-encodes the video stream using the H.264 video codec. c:a copy \ output_file Generic command ffmpeg \ ![]() Transcode a video file by using the H.264 codec for dissemination purposes.
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