54 lines
1.9 KiB
Bash
Executable File
54 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# See :
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# https://stackoverflow.com/questions/49955100/how-do-i-split-a-video-to-2-separate-files-for-odd-and-even-fields-using-ffmpeg
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# Et :
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# https://korben.info/ffmpeg-pour-les-nuls.html
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# Split the 1 video in 2
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ffmpeg -i $1 -filter_complex "[0]il=l=d:c=d,split[o][e];[o]crop=iw:ih/2:0:0[odd];[e]crop=iw:ih/2:0:ih/2[even]" -map "[odd]" odd.mp4 -map "[even]" even.mp4
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# Rotate the 2 videos clockwise
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ffmpeg -i odd.mp4 -vf "transpose=1" odd_90cw.mp4
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ffmpeg -i even.mp4 -vf "transpose=1" even_90cw.mp4
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# Split each of the 2 videos in 2
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# We now have 4 videos
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ffmpeg -i odd_90cw.mp4 -filter_complex "[0]il=l=d:c=d,split[o][e];[o]crop=iw:ih/2:0:0[odd];[e]crop=iw:ih/2:0:ih/2[even]" -map "[odd]" odd_90cw_odd.mp4 -map "[even]" odd_90cw_even.mp4
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ffmpeg -i even_90cw.mp4 -filter_complex "[0]il=l=d:c=d,split[o][e];[o]crop=iw:ih/2:0:0[odd];[e]crop=iw:ih/2:0:ih/2[even]" -map "[odd]" even_90cw_odd.mp4 -map "[even]" even_90cw_even.mp4
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# Rotate these 4 video back to normal (counter-clockwise)
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ffmpeg -i even_90cw_odd.mp4 -vf "transpose=2" even_odd.mp4
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ffmpeg -i even_90cw_even.mp4 -vf "transpose=2" even_even.mp4
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ffmpeg -i odd_90cw_odd.mp4 -vf "transpose=2" odd_odd.mp4
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ffmpeg -i odd_90cw_even.mp4 -vf "transpose=2" odd_even.mp4
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# Get filename
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filename=$(basename -- "$1")
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extension="${filename##*.}"
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filename="${filename%.*}"
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# Extract audio from original file
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ffmpeg -i $1 -acodec copy $filename.aac
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# Merge audio track into each one of the 4 videos
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ffmpeg -i $filename.aac -i even_odd.mp4 $filename.part1.$extension
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ffmpeg -i $filename.aac -i even_even.mp4 $filename.part2.$extension
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ffmpeg -i $filename.aac -i odd_odd.mp4 $filename.part3.$extension
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ffmpeg -i $filename.aac -i odd_even.mp4 $filename.part4.$extension
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# Remove useless files
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rm odd.mp4 even.mp4 odd_90cw.mp4 even_90cw.mp4 even_90cw_odd.mp4 even_90cw_even.mp4 odd_90cw_odd.mp4 odd_90cw_even.mp4 even_odd.mp4 even_even.mp4 odd_odd.mp4 odd_even.mp4 $filename.aac
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