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MP4 ffmpeg useful options
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| # convert mp4 to webm | |
| ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 30 -speed 3 -pix_fmt yuv420p -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart -an output.webm | |
| # reduce file szie of mp4 | |
| ffmpeg -i input.mp4 -c:v libx265 -crf 23 -tag:v hvc1 -pix_fmt yuv420p -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart -an output.mp4 |
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