Timelapse/Processing: Difference between revisions
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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. | '''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.) | '''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: | 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. | |||
There are also some interesting side topics, such as image averaging using the [[ | |||
Revision as of 21:35, 30 July 2016
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.