One setting across a mixed set
The strength of batching is also its constraint: every file gets the same treatment. That is fine when the inputs are consistent — a folder of clips from one camera, a set of screen recordings at the same resolution. It goes wrong on mixed sets, where a quality setting tuned for 4K footage is wasteful on a 720p clip and a size target sensible for a short clip starves a long one. Group similar files and run several batches rather than forcing one configuration onto everything.