Hi mellow,
Unfortunately, phpvideo requires ffmpeg, which can only be installed on a VPS or Dedicated Server. Installing ffmpeg on any server requires a great deal of resources to run (while converting video), which would cause a Shared or Reseller server to have problems with high loads and slow performance.
Please consider a Dedicated server if you require this software for your site:
Dedicated Server Hosting Solutions by Surpass Hosting
Hope this information helps you out
