Expected pre-recorded video file format

Container
MP4
File extension
.mp4
Video codec
H264 (Profil High, Level 4.2)
Video resolution
1920x1080 (1080x1920 for 9:16 ratio) 
Video interlacing
Progressive
Video frame rate
25 or 30 fps 
Video bitrate
10 to 17 Mbps - Constant Bitrate (CBR)
Audio codec
AAC
Audio tracks / Channels
1 track / 1 or 2 channels
Audio sampling rate
44,1 - 48kHz
Audio bitrate
128 - 256 kbps 
These parameters are intentionally chosen to provide the best balance between quality, compatibility and performance:
Excellent visual quality for Full HD (1080p) content
Maximum device compatibility (desktop, mobile, tablets, smart TVs, set‑top boxes)
Predictable playback performance, including hardware decoding
Optimized storage, bandwidth usage and transfer times
For video content with alpha channel a Apple ProRes 4444 encoding is requiererd