Oculus Go can now view videos up to 5.7K video in H.264 format (in monoscopic not stereoscopic 360 video). Check out the tutorial by my friend, CreatorUp’s Hugh Hou!
First you need to update the firmware in your Oculus Go. As long as you’re connected to the internet, Oculus Go will update the firmware automatically.
Next you need to ensure that the video is in H.264 format, with a 2:1 ratio. In order to export H.264 above 4K, you can use Adobe Premiere CC. The exported file must have the suffix _360.mp4 (or _180_3D.mp4 for SBS 3D 180) in order to copy it to Oculus Go. According to Hugh, the best resolutions are 5120 x 2560 or 5760 x 2880.
Connect the Oculus Go to your PC and select Allow from the Oculus Go headset when asked to grant permission to access files. You’ll then see the Oculus Go appear as a drive called VR-Headset, and you’ll be able to copy the videos to your Oculus Go.
On a related note, Insta360 developed an app called Insta360 Moment which uses fixed foveated rendering to enable the Oculus Go to playback 8K 2D 360 videos (but there are still some bugs).