Video plays on iPhone but not on iPad

Hello, Rauhustan.

Thanks for reaching out to Apple Support Communities. We understand that you're having some issues with videos not playing on your iPad, and we'd like to help. From here, let's make sure your iPad is updated, with help here: Update your iPhone, iPad, or iPod touch

Let us know if this helps.

Take care.

We appreciate the information, Rauhutsan. It may be best to contact the application/manufacturer of where you got the video. However, you may also Contact Apple Support, to see if they can help.

Have a good day.

Thanks for reaching out again, Rauhustan. Could you let us know if this is a video you took on your device, or downloaded from somewhere?

Regards.