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ffmpeg_notes [2021-06-16 14:33] – [video -> image sequence] nik | ffmpeg_notes [2021-06-19 07:41] – [concat] nik |
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====image sequence → video==== | ====image sequence → video==== |
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''ffmpeg -r 1/5 -i %05d.jpg -c:v libx265 -vf "fps=25" out.mkv'' | ''ffmpeg -i %05d.jpg -c:v libx265 -r 25 out.mkv'' |
==== concat ==== | ==== concat ==== |
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a list of files (e.g. named files.txt)\\ | create a list of files (e.g. named files.txt)\\ |
''file 'dust_and_shadow_28min.mp4' ''\\ | ''file 'dust_and_shadow_28min.mp4' ''\\ |
''file 'dust_and_shadow_black.mp4' ''\\ | ''file 'dust_and_shadow_black.mp4' ''\\ |
''ffmpeg -f concat -i files.txt -c copy dust_and_shadow_30min.mp4'' | ''ffmpeg -f concat -i files.txt -c copy dust_and_shadow_30min.mp4'' |
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also -> https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg | alternatively, partial automation...\\ |
| ''ls *.mp4 | while read each; do echo "file '$each'" >> files.txt; done\\ |
| ffmpeg -f concat -i files.txt -c copy 000-qualia-RN101.mkv'' |
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| also -> https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg |
====ffmpeg filters ==== | ====ffmpeg filters ==== |
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