WhatsApp destroyed my video codec? (Android phone)

[SpectorHacked]

Hello..
I got filmed 3 video with my android..
2 of them are like 80 mb size and the last one is 200 MB, I watched the big one once..
Tryed to send it by Whatsapp and the whatsapp Says That it couldnt been sent..
After I tried watch it again.. and sucssed.
Then I tried send it again And Poped a message that says that I cant send it.
Tryed to open it.. CANT OPEN.
I gave to a friend of my and he tried to use convertor on it And couldnt do it beacuse the file isnt supported.
The codec is "Isom" Mpeg4. the rest of the files are works perfectly and Sendable.
I Downloaded the video to my computer and cant see it.. tryed watch is with many Video programs But nothing works.. it says 2 things "Unsupported file" and "Codec" problem.. This video is realy important for me there is any way of saving it?
Thanks for help!!!! srsly!

[kpmedia]

That sounds like the file was corrupted all along on your phone.
WhatsApp had nothing to do with it. It was just a coincidence that that's what you were doing at the time.

[SpectorHacked]

First.. thanks for answering!
second.. There is any chance of saving that file???? its realy important Video!
How its possible it was corrupted all along if I watched it early on?