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README
frames_to_movie.py
generate_images.py
gpx-nolayer.xml

README

For each image sorted by date
  Combine with previous image into background image
    composite in1.png background.png background-new.png
  Make background image with increased transparency
    convert /tmp/out.png -alpha on -channel a -evaluate set 75% /tmp/out2.png  
  Comine with increased transparency background image into iterated 
    composite in1.png in2.png out.png
  
Then
  ffmpeg -qscale 5 -r 20 -b 9600 -i img%04d.png movie.mp4