What are the best settings for Video view in AR on Unity with Vuforia?

Hey guys,

I am planning to develop an AR application on Unity with Vuforia where the user aims their phone camera at a box with a texture which opens up and plays a video

I am planning to have 10 boxes so 10 videos all in one application / scene

Are there any limitations with Vuforia? What format and settings should the videos be including optimal bitrate/kbps for best performance on mobile?

The user may run this AR application using Vuforia View on their phone, does Vuforia view have any problems running videos?

Also just a random question, if I developed an AR application using Vuforia on Unity, once I publish it on the playstore, does every person need Vuforia view to view the AR app? What would and can they use to run the application?

Thanks!