Timelapse/Processing

ffmpeg: One of the most useful tools for post-processing video is ffmpeg. There are some notes on ffmpeg on the wiki already: Ffmpeg. Most of the material here will be a variation on that.

xargs: Another useful tool for post-processing video is xargs. Notes on xargs on the wiki already: Xargs. This is a unix command-line utility that forks a single process or single command to multiple inputs. This is extremely useful to streamlining image processing, which can be done in parallel. (It is also useful for mass-renaming files.)

The procedure for post-processing videos looks like this:

   Obtain and wrangle a large number of sequentially numbered jpeg files (xargs)
   Figure out what effects to apply - single jpeg file (lightroom)
   Apply desired effects en-masse - all jpeg files (lightroom)
   Turn mass of jpeg files into video (ffmpeg)

There are also some interesting side topics, such as image averaging using the Python Imaging Library. This allows for smoother, more stretched-out timelapse videos.