I understand the frustration. It seems that every video app has a different codec, and figuring out what codec/format you should release a video in ( and how you convert what you have to what you want) is a major PITA!
I also understand the frustration of the people who want to view it. I haven't gotten them to work either (but that is the least of the issues I have with my antique).
I'll offer ten "hail probes" to anyone who actually understands video formats to offer an acceptable format/container, and a free way to convert them. Here's one as a down paypent. Hail