Too long recordings cannot be shared

Hi!

I made a multiple minutes recording that failed to upload. After some debugging, it seems that nginx is blocking the upload. I created a pull request to fix the issue, but of course feel free to reject if that's not how you plan to handle.

https://github.com/faressoft/terminalizer/pull/239

Thanks for this great project!

Start by reviewing pull request #239 and the nginx upload handling it addresses. Confirm how recording length affects uploads, then verify that multi-minute recordings can be uploaded and shared successfully.

Written by the indexing model from the issue text.