I am trying to upload a .mp4 format video, is there a setting or something I am missing. I have allowed them in the settings.
So I can drag and drop the video, and it opens and starts playing, however it doesnt actually upload to my “media” and doesnt save.
I can upload another video I found on another website, I think it might have to do with file size? How can I check what the maximum video file I can upload is? My video that worked is less than 1 MB, and the one I am trying is 4 MB. Thank you for the help in advance!
In the wp-admin / rtmedia / settings determines the maximum file size for each file type.
However, your webserver config is the going to set the upper limit.
Go to your web root directory, and create a file called php.ini, and in it add this:
upload_max_filesize = 32M post_max_size = 32M
…but change the 32M to however many MB you want the max file size to be. 
Mine is set to 2000M because of very (very very very) large videos. It’s all up to you.
Hi @silingi,
You can check max upload from page :
{site_url}/wp-admin/admin.php?page=rtmedia-support
The minimum value of post_max_size and upload_max_filesize is the upload limit.
@illusionsglass, thank you for your great contribution in community forum. 
Thank you.