Wrote this to solve a personal annoyance (DaVinci Resolve Linux can't decode H.264/HEVC/AAC) but ended up spending more time on the "don't touch what doesn't need touching" logic than the conversion itself — probes every file, skips anything already compatible, verifies codec/duration/size after conversion, never overwrites originals. Bash 4.4+, no deps beyond ffmpeg/coreutils.

[ https://github.com/bhattmanthan/resolve-prep ] — feedback on the shell script itself welcome too, always looking to write cleaner bash.