xSendFile/xAccelRedirect enable your webserver to provide the file download, rather than PHP providing it. As your webserver is actually designed to handle static files, it works significantly better than PHP. See here for other performance info:
https://support.mfscripts.com/public/kb_view/27/
Hey all,
We are currently looking to employ an additional developer to expand MFScripts. If you're interested then please go to the following url:
https://mfscripts.com/mfscripts-employment.html
Thanks,
Adam.
Try testing it directly on the command line via SSH. So first via the script admin, media converter plugin settings, set "Output Cron Messages" to "Yes".
Then login via SSH as root and run:
php /path/to/your/install/plugins/mediaconverter/converter/convert.php
Replace /path/to/your/install/...