Yes, VR Sync supports 4K resolution. The recommended video specifications are:
- Codec: H265 or H264
- Resolution: 3840×1920
- FPS: 30
- Max bitrate: 16 mb/s
- Audio: Stereo aac audio or .tbe (two big ears) at 44.1 kHz
The performance can vary depending on the device, therefore we recommend testing your content thoroughly on your devices beforehand to avoid any problems.