Testing PySceneDetect and ffmpeg, experimenting to find a fast and correct solution

pyscenedetect_testing.txt

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time ffmpeg -y -ss 00:00:42.543 -i 014092.mp4 -to 00:01:07.534 -sn output-02.mp4

real    4m7.826s
user    5m19.675s
sys 0m33.276s

Result: Started at right place, cut video to 1m7s long (??)

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time ffmpeg -y -i 014092.mp4 -ss 00:00:42.543 -to 00:01:07.534 -sn output-03.mp4

real    1m31.886s
user    2m1.006s
sys 0m13.614s

Result: cut correctly

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time ffmpeg -y -ss 00:00:42.543 -i 014092.mp4 -t 24.992 -sn output-04.mp4

real    2m23.862s
user    1m52.849s
sys 0m26.881s

Result: Seems to have cut correctly?

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pip uninstall scenedetect
pip install git+https://github.com/joshcoales/PySceneDetect.git@cut-video-without-final-frame
time scenedetect -i 014092.mp4 detect-content split-video

real    8m55.310s
user    13m46.013s
sys 0m51.304s

result: all good

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pip uninstall scenedetect
pip install scenedetect
time scenedetect -i 014092.mp4 detect-content split-video

real    6m52.787s
user    10m57.887s
sys 0m30.425s

Result: all broken

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time scenedetect -i 014092.mp4 detect-content list-scenes

real    2m1.762s
user    3m10.816s
sys 0m4.113s

Result:
-----------------------------------------------------------------------
 | Scene # | Start Frame |  Start Time  |  End Frame  |   End Time   |
-----------------------------------------------------------------------
 |      1  |           0 | 00:00:00.000 |        1275 | 00:00:42.543 |
 |      2  |        1275 | 00:00:42.543 |        3194 | 00:01:46.573 |
 |      3  |        3194 | 00:01:46.573 |        3507 | 00:01:57.017 |
 |      4  |        3507 | 00:01:57.017 |        5107 | 00:02:50.404 |
 |      5  |        5107 | 00:02:50.404 |        6136 | 00:03:24.738 |
 |      6  |        6136 | 00:03:24.738 |       10310 | 00:05:44.010 |
-----------------------------------------------------------------------

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time ffmpeg -y -ss 42.543 -i 014092.mp4 -t 24.992 -sn output-05.mp4

real    1m36.028s
user    1m52.412s
sys 0m25.246s

Result: Seems to have cut correctly?

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vi ~/.local/lib/python3.6/site-packages/scenedetect/video_manager.py  # Modifying to print the ffmpeg command
time scenedetect -i 014092.mp4 detect-content split-video

print command:
['ffmpeg', '-v', 'error', '-y', '-ss', '00:01:46.573', '-i', '/mnt/md0/samba/private/bot/gif_pipeline/experiment/014092.mp4', '-c:v', 'libx264', '-preset', 'veryfast', '-crf', '22', '-c:a', 'copy', '-strict', '-2', '-t', '00:00:10.444', '-sn', '014092-Scene-003.mp4']

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time ffmpeg -y -ss 42.543 -i 014092.mp4 -c:v libx264 -strict -2 -t 24.992 -sn output-06.mp4

real    1m51.412s
user    1m52.299s
sys 0m24.275s

Result: seems to have worked_

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time ffmpeg -y -ss 42.543 -i 014092.mp4 -c:v libx264 -preset veryfast -strict -2 -t 24.992 -sn output-07.mp4

real    0m22.345s
user    0m36.594s
sys 0m0.481s

Result: seems to have worked?

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time ffmpeg -y -ss 42.543 -i 014092.mp4 -c:v libx264 -preset veryfast -crf 22 -c:a copy -strict -2 -t 24.992
 -sn output-08.mp4

real    0m20.465s
user    0m36.603s
sys 0m0.339s

Result: broken

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time ffmpeg -y -ss 42.543 -i 014092.mp4 -c:v libx264 -preset veryfast -crf 22 -strict -2 -t 24.992 -sn outpu
t-09.mp4

real    0m20.576s
user    0m37.407s
sys 0m0.349s

result:  seems to have worked

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time ffmpeg -y -ss 42.543 -i 014092.mp4 -c:v libx264 -preset veryfast -crf 22 -c:a aac -strict -2 -t 24.992
-sn output-10.mp4

real    0m20.781s
user    0m37.524s
sys 0m0.468s

Result: working