is ffmpeg optional in version 2.4? or do i need the ffmpeg to run the script without any problem?
Don't look for a sponzy script that you have no problems with. The author of Sponzy adds ready-made codes he finds on github and sells them to people as if he made them himself. Most of the free laravel plugins on github seem to be working in the coding phase, but they have problems. However, although the author of sponzy knows these, he adds it to his script to trick people (Yes, look, I'm updating).
You can use this script for a short time, but it will give you 2 or 3 months of excitement, then you will see that it is not useful and has constant problems. I bought sponzy to give it a chance but it didn't receive updates for exactly 5 months and when I emailed the author he didn't reply. I asked for a refund after giving 1 star and 3 months later my refund was accepted. Glad I got a refund because I see he still treats people badly. It is enough to send 3 e-mails in a row to see his real face. He will start answering you with harsh sentences.
Anyway, long story short, don't expect a project from this script that you don't have any problems with. Because even if the ffmpeg problem is solved, you will have another problem after a few days, be sure of that.