Upload limits

Iv set up peertube changed all the max body limits in nginx.conf peertube.conf and max upload in production.yaml and im still hitting a limit somewhere. Im trying to upload a 1.3GB video BUT other files that are larger upload fine. Seems like peertube is misidentifying the file size. Im going to try reencoding the file to see what happens but while that churns slowly away i though id see if anyone else has the same problem