Render Output Extension can not be a movie F

Trying to load a file which has an AVI extension, critical warning says it can not be a movie file.

By default the sanity check is set to not let people render straight to an avi or mov extension because there is no point doing that, especially in context of a render manager, I don’t think it will work.

But if you would like to do that you can totally overwrite the sanity checks behavior, by going to the Admin Tab > Open the Sanity Check group (you might have to create a repository for that if you don’t have one already, see section F:

You can either turn the check off or set the notification level lower.