What kind of phone and do you have a computer?
How do I get a video I took with my phone off of my phone and on to something I can preserve it on? (I tried emailing it and text messaging it and it won't allow) I also tried putting it on a CD. It's only 34 seconds long but I HAVE to have it forever! Lol!
Apple should save it as an MP4 which you should be able to download to iTunes that would be install on your PC . . . Androids are literally drag and drop into a folder on your PC . . Either should be transferable to any medium.
We just had to do this ourselves. Not clear exactly but try either Google Drive or Dropbox. Try tutorials on You tube to figure out the easiest and fastest way to save it.
You could post it on Youtube. No guarantee that Youtube would be forever though.