If I insert a vimeo video using generico then the video thumbnail that displays is 
Is there a way to point to a different (custom) image location?
I guess you are embedding it in a different way.
If you are making a generico template, it will look like the screenshot I attached.
I just used their embed code as is and replaced the video id, height and width with variables.
Can you tell me more abut how you are doing it?
Thank you for getting back to me.
This is exactly the generico code I am using.
Do you get a relevant video thumbnail when you do it on your end?
Yes I get a thumbnail/poster image
Are you an https page or something like that?