Videopack is a small programming project I started in 2010 as a way to make thumbnails for client videos instead of copying and pasting frames from QuickTime Player (it was a different time!) and it spiraled way out of control. I work full-time as a TV editor but I try to keep the plugin updated as much as possible.
The best way to get support is on my WordPress support forum. I usually answer questions within 24 hours.
I use GitHub for developing my plugin and posting an Issue there is another good way to get my attention.
I prefer these public support methods because it leaves a record of answers for future users and helps me avoid answering the same questions repeatedly. I generally don’t respond to emailed questions about the plugin but if you have an issue that can only be asked privately you can email me at firstname.lastname@example.org