Best video format to use for multiple resavings Okay, I'm making a video heavy on special effects and each clip will probably be run through Blender at least four times.  Once for de-interlacing and setting the frame rate to 30 (I might use HandBrake for that part) once for editing, once for special effects, and once for color correction and other compositing tricks.  If I converted each of these clips to an PNG image sequence, the project would probably be a couple hundred Gigabytes.  What video format retains the most quality for this sort of thing?
Don't.


Control the rendering of your codec to a lossless stills format to load into your pipeline. Do so only after having locked your picture edit.
Save to EXR when you must save to a file format, and stay in EXR until your final grade. Even half float EXRs would be satisfactory.
Conform to a display referred format such as JPEG or TIFF at the very end. DPX is the standard here, but is likely a more complex path for reasons that are too vast to list here.
Encode from there.


If you ask a follow up question, I could give you a very standardized production pipe that might illuminate why this is advised.