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599316527/convert.sh

Last active July 17, 2019 13:16
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ffmpeg compress video to a specific filesize
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convert.sh
#!/bin/zsh
ffmpegParam="-hide_banner -y";
videoEncodeParam="-c:v libx264 -crf 23 -profile:v main -level 3.1 -pix_fmt yuv420p -movflags +faststart -s 1024x768";
audioEncodeParam="-an";
fileSizeParam="-b:v 1.6M -maxrate 1.6M -bufsize 2m";
echo "Convert: $1 -> $2";
# Use two-pass to reduce size https://trac.ffmpeg.org/wiki/Encode/H.264
/usr/local/bin/ffmpeg $ffmpegParam -i $1 $videoEncodeParam $audioEncodeParam $fileSizeParam -pass 1 -f mp4 /dev/null && \
/usr/local/bin/ffmpeg $ffmpegParam -i $1 $videoEncodeParam $audioEncodeParam $fileSizeParam -pass 2 -f mp4 $2
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