Recorded video only playing audio on camera roll

I just recorded 2 hours worth with no issues during the recording. Finished recording, selected the save to camera roll. However when I went to watch it on camera roll, the screen was black and only audio played. It was the same case when I went to watch it in the saved recordings on the app. Any suggestions so I don’t have to re-record for 2 more hour while crossing my fingers?

Hey Nick, 

thank you very much for contacting us!

Please provide some more informations:

* Which exact iPad are you using together with the vjay app ?
* Which file format were the videos in your recording ? 

Thank you very much for your answers. 
Best regards,