I think up to 100MB per output, or at least it used to be. I would recommend streaming inscriptions for larger than a few MB. Ordfs will serve them up as 1 file and allows for range requests, so you can do streaming media. Plus I could use some test cases. :) 1MB chunk sizes makes it pretty efficient. https://docs.1satordinals.com/content-and-resolution/streams
docs.1satordinals.com Streams | 1Sat Ordinals Large files split across an ordinal transfer chain 582 569 sat