Because mp4's do not work on neocites you have to make a link in which you can pull the video from
When I realized that NeoCities wouldn't support video file uploads, I asked my dad if there was another way. He suggested Google Cloud. First, we went to a help page on creating "buckets" which can hold files.
I followed the instructions to create a bucket
I ended up with a funny-named bucket, which I then clicked on
I uploaded my file and it appeared in the list
I had to click on the filename, then get to this screen where I could click Edit Permissions at the top.
After I was able to put the video into the code I used the stacking files technique
and voila you have a video on your website
This is using the google cloud supporter
This is embeding using a youtube video
Click on the share button and you will see this open
After this opens up click embed and copy the code, after you have copied the code you can paste in and tadaaa your video is now on your page.