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Required Packages:

  • FFmpeg (prefered) or VLC
  • ImageMagick
    • Includes convert and mogrify
  • Python
  • Plus dependencies

Tested with Linux, should work universally with a bit of work

Use the automated script

Unix only command structure

  1. wget https://raw.githubusercontent.com/braeden123/movie_magic/master/automate.py OR save it from here

  2. python automate.py '/movie\ folder/path/FilenameHere.mp4' [-h] [-v] [-l ###] [-s ###] [-f ###] [p ##]

  • Will produce 4 folders and 2 output files
  • The filename/path must use bash escapes AND be surrounded in single quotes.
  • Uses FFmpeg
  • More detailed help is available with the -h or --help flags.

Customize the creation

Capture the initial frames:

FFmpeg (faster)

ffmpeg -i /path/to/movie/file.mp4 -vf "select=not(mod(n\,250))" -vsync vfr /path/to/output/scene%04d.png

  • 250 can be replaced with the number of frames you'd like to skip before capturing again
    • ex. at 24FPS, 240 would be 10 seconds
  • Don't use the same directory for input and output

VLC (requires extra steps)

vlc /path/to/movie/file.mp4 --video-filter=scene --vout=dummy --scene-ratio=250 --scene-path="/path/to/output"

  • scene-ratio is how many frames VLC will wait until capturing another image,
    • ex. at 24FPS, 240 would be 10 seconds
  • scene-path is the folder location that the images will be stores in
  • You can speed up the VLC window using the ] key, but too much speed will cause it to drop frames
  • Don't use the same directory for input and output

Option #1 - Shave the images down to a small slices:

mogrify -path /output/folder/path -shave 49.9%x0 /input/folder/path/*.png

  • -path flag is followed by the folder path to output the cropped frames to
  • -shave flag is followed by a percentage or # of pixels to crop from the HORIZONTALxVERTICAL
  • Change to -shave 0x49% to capture strips horizonally
  • Depending on the frame size, you may want to use a percentage like 49.95% to crop in smaller
  • Last file path is for the input frames, same folder you used as VLC output

Option #2 - Shave the images down to single color strips:

mogrify -path /output/folder/path -resize 1x1 input/folder/path/*.png

  • Shrinks each frame to 1x1 images, averaging colors

mogrify -path /output/folder/strips/path -resize 2x900! input/pixel/images/path/*.png

  • Stretches those pixels unto 2x900px strips
  • Make the output of the first command become the input directory for the second command
  • Change to -resize 900x2! to make horizontal strips

ONLY IF USING VLC - Rename files within directory to ensure that the correct combination order is met:

Purpose: add a 0 before VLC generated filenames for the lower frame numbers. Must be used to achieve a an ordered slice combination

Otherwise, image magick will see "167500.png" before "16800.png" etc. This program will turn 16800.png or scene16800.png into prefix016800.png

  1. Download the renaming script:

    • wget https://github.com/braeden123/movie_magic/blob/master/rename_with_zero.py OR save it from here

  2. Open it and edit it:

    • vim rename_with_zero.py OR use your favorite text editor
    • Edit the path parameters

  3. Run it and let it rename files:

    • python rename_with_zero.py

Combine strips for final image:

convert +append /input/folder/with/strips/*.png /home/user/Pictures/output.png

  • +append appends horizontally, -append appends vertically
  • First path is the input, and selects all of the PNGs in that folder, should contain all of the strips
  • Second path is a single image output
  • If the final image turns out to be grayscale, try adding the flag -colorspace RGB or -colorspace CMY