How to send the video to someone else's mobile phone directly by SMS or using some software? Regardless of e-mail

MMS? It seems that China Mobile limited the size of MMS to 100k (I don't remember the exact number, it should not exceed several hundred K). The scheme of building 1 should be possible.

Besides, do you mean that the other party should not do anything? If you just want to send a picture to a friend, in fact, many software can, such as mobile qq, and the updated version can transfer files.

If you want the other party to see it without installing software, you can actually consider sending the other party a link to that picture instead of sending it directly. The other party needs to click to see it after receiving it.