My 1:1 video won't open

[Aneta5D4A]

Hey I've got a problem after exporting video 1:1 ratio - mp4 file. 
I open my animation easily on my macbook using QuickTime but while i sent it to my client he wasn't be able to play it. (frames were deformed) He just got a freeze frames like that:

[Kevin-Monahan]

Hi, Aneta,

Sorry about that experience. Can you please show us a screenshot of your export settings?

Thanks,
Kevin