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mpv-autocrop

autocropping scripts for mpv

The main script is mpv-autocrop.py. It calls mpv with the lua scripts to search the arguments for valid playlist items and then get a series of .pgm grayscale screenshots. It loads these as numpy arrays using scipy and python imaging library and automatically computes the appropriate --vf=crop command for each playlist item. Finally it calls mpv with the the computed crop commands. Unparsed arguments are passed on to mpv.

dependencies

In order to run this program you need

  • python-numpy
  • python-scipy
  • python imaging library
  • mpv with lua scripting enabled
  • python-matplotlib (for the --show-plot functionality)

examples

To play a file with its dark borders cut out, simply run

$ mpv_autocrop.py file.mkv

Adjust the treshold for what is considered "black" as a fraction between 0 (no luma) and 1 (max luma)

$ mpv_autocrop.py --thresh 0.1 file.mkv

Any arguments not recognized by the script are passed on to mpv

$ mpv_autocrop.py file.mkv --start=10:00 --vo=opengl-hq

You can get some diagnostic plotting with

$ mpv_autocrop.py --show-plot file.mkv

And you can verify that mpv crops exactly as expected

$ mpv_autocrop.py --verify file.mkv

For other options, see

$ mpv_autocrop.py --help

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autocropping scripts for mpv

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