Oh ok I have no idea how hard it is to split a video in 2GB rar chunks.
For the Filejoker part though if it's divided in 500MB per rar file it really gets a bit frustrating to download it. Because once 1 Filejoker file is downloaded of 500 MB you need to wait 5 hours to download the next one. So the bigger it can be the better for Filejoker files.
I think I found your site
Reasons aside, it is not hard to split a video into rar parts.
It is as easy as copying a 4GB file from one drive to another.
Just use "Store" instead of "Normal" in the compression method options.(You can't compress much from the video file anyway.)
On the 2nd point, as a free user, downloading a 2GB file from joker is a whole day event.
And more often than expected, the connection got cut off for reasons unknown, usually ~3/4 done, deeming the whole day wasted.
A smaller chunks means I'd have already finished the part, or having lost connection and just have to wait for a few hours to redownload.
It much manageable.
From a premium user side of view, I don't know how often they get disconnected, but I know 2GB is subtracted from their daily/weekly quota regardless if download is successful or not.
But usually, they prefer larger chunks.