We found that the size limit for Bluesky is 50 MB (50,000,000 bytes, 47.68 MiB), which is contrary to Discord Nitro Basic, which allows 50 MiB (52,428,800 bytes) uploads. Autocompressor nearly always exceeds 50 MB when set to 50 MiB.

We'll be updating the service with an MB/MiB toggle for Bluesky.