Play pre-rendered 360 video on VR

Hi.
i’m trying to play a pre-rendered 360 video for oculus in ue4. i applied the texture to a sphere, and put my camera inside that sphere right in the middle.

i was able to play it and to watch the video till end, however, the texture quality is blurry even if it’s 4k video. real-time rendered quality was way much better, which doesn’t make sense to me. And i couldn’t find any way to play in stereoscopic (can’t even find any documentation)

Can anyone give any suggestion? is it possible to do such things in ue4?
Like for example, a cinematic 360 movie when we reach certain point in game to reduce resource cost?

Make sure you have forward shading enabled in your rendering settings and then change your anti-aliasing method to MSAA. That should vastly improve the video output quality in game.