Juno Jupiter movie modification

This describes a modification of NASA's Juno spacecraft video of it's Jupiter approach from Mid 2016.

Video is here: https://www.youtube.com/edit?video_id=VpLcCaEMd50

How the movie is made

1. download video file from

https://www.youtube.com/watch?time_continue=21&v=XpsQimYhNkA

2. Extract frames, excluding intro and outro video. tiff = minimal loss

 ffmpeg -i JunoOrig.mp4  -ss 00:00:32.47 -to 00:02:00.29 juno%06d.tiff

2.5 imagine algorithm to blend images so planets have 'tails'

imagine images in a sequence

1
2
3
4
5

now imagine you want to blend the last 4 images with the current image

  1
  12
  123
  1234
   2345
    3456
     4567
      567
       67
        7
before loop

    create x  -- dim 1 so its slightly less bright

do loop
    1 - composite with x. save new image as x. copy x to 1x. darken x.
    2 - composite with x. save new image as x. copy x to 2x. darken x.


3. run bash script to blend images together as in algorithm

bash -x compit

$!/usr/bin/env bash

cp juno000001.tiff tmp.tiff
convert -modulate 90,100,90 tmp.tiff tmp.tiff

for i in `ls | egrep "^juno.*tiff"`; do
	echo $i
	composite -blend 100x100 $i tmp.tiff tmp.tiff
	cp tmp.tiff tmp$i
	convert -modulate 90 tmp.tiff tmp.tiff
done

4. convert images to movie format

ffmpeg -framerate 29.97 -i tmpjuno%06d.tiff -c:v libx264 -pix_fmt yuv420p out.mp4


See Also:

Emily Lakdawalla's https://twitter.com/elakdawalla    - crucial for inspiration
Alex Parker's https://twitter.com/Alex_Parker
Planetary Society http://www.planetary.org/blogs/emily-lakdawalla/2016/07042245-juno-has-arrived.html
NASA Juno mission https://www.nasa.gov/mission_pages/juno/main/

user ConstNT http://stackoverflow.com/questions/8287759/extracting-frames-from-mp4-flv
user slhck http://superuser.com/questions/377343/cut-part-from-video-file-from-start-position-to-end-position-with-ffmpeg
Feh https://feh.finalrewind.org/
Ubuntu Linux http://www.ubuntu.org http://www.linux.org
ffmpeg http://ffmpeg.org
ffmpeg slideshow: https://trac.ffmpeg.org/wiki/Create%20a%20video%20slideshow%20from%20images
ImageMagick http://www.imagemagick.org
ImageMagick composite: http://www.imagemagick.org/Usage/compose/