Encoders do some interframe analysis (motion, etc) as part of encoding P/B-frames; I wonder if this work could be done once and reused for all the encodings.
Encoders do some interframe analysis (motion, etc) as part of encoding P/B-frames; I wonder if this work could be done once and reused for all the encodings.
I would guess if you have it export multiple files from the same source in one go it already does but could be wrong.
This post is how meta engineers just recently submitted a patch with the ability to avoid starting a new process for every output encoding and so they can share the decoding step. Maybe that also includes sharing the motion estimation step, but I would be careful making such assumptions, FFMPEG has a lot of low hanging optimization work that hasn't been done just because someone hasn't done it yet.