@wild1145
The voice of experience makes me suspect that you're going to in the end find that some clandestine temporary file size limit is kicking in, somewhere.
LIke (for one example) how in this issue the error message talks about the file size, but it's actually the pixel count during transcoding that is the limit and the error message is misleading.
https://github.com/mastodon/mastodon/issues/32983
Or it could be a resource limit or control group setting, or a temporary filesystem cap.
Diagnosis is always the tricky part. I predict lots of logging being created and turned on, in your future. (-:
#Mastodon #transcoding