Default encoding profiles
This document defines the default set of transcoding profiles for OpenTV Platform. They have been selected based on:
Cost/performance
Device compatibility
Encoder capabilities
General settings are as follows:
Passthrough hertz/framerate – framerate support will vary on device but target up to 60 fps for compatibility.
The operator can choose to reduce number of variants on ABR sets
Encoding modes
VOD 2 Pass, VBR
Live CBR (capped), 1 pass
Bitrate tables
SD – with curtains as needed
Video bitrates (Kbits/s) | Pixel sizes | Audio bitrate (Kbits/s) / encoding | Video codec | Notes |
|---|---|---|---|---|
64 | N/A | 32 LC-AAC | N/A | Audio only, HLS only |
235 | 720x480 | 32 LC-AAC | H264 4.1 Main | |
375 | 720x480 | 32 LC-AAC | H264 4.1 Main | |
560 | 720x480 | 32 LC-AAC | H264 4.1 Main | |
750 | 720x480 | 32 LC-AAC | H264 4.1 Main | |
1050 | 720x480 | 32 LC-AAC | H264 4.1 Main | |
1750 | 720x480 | 32 LC-AAC | H264 4.1 Main |
HD – 16:9 or greater
Video bitrates (Kbits/s) | Pixel sizes | Audio bitrate (Kbits/s) / encoding | Video codec | Notes |
|---|---|---|---|---|
Below 1750 as SD | ||||
2350 | 1280x720 | 64 HE-AAC + E-AC-3 (where 5.1) | H264 4.1 Main | |
3000 | 1280x720 | 64 HE-AAC + E-AC-3 (where 5.1) | H264 4.1 Main | |
4300 | 1920x1080 | 64 HE-AAC + E-AC-3 (where 5.1) | H264 4.1 Main | |
5800 | 1920x1080 | 64 HE-AAC + E-AC-3 (where 5.1) | H264 4.1 Main |
UHD – 16:9 or greater
Video bitrates (Kbits/s) | Pixel sizes | Audio bitrate (Kbits/s) / encoding | Video codec | Notes |
|---|---|---|---|---|
64 | N/A | 64 HE-AAC + E-AC-3 (where 5.1) | N/A | Audio only |
235 | 720x480 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 3.1 | |
560 | 720x480 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 3.1 | |
1050 | 720x480 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 3.1 | |
1750 | 720x480 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 3.1 | |
2350 | 1280x720 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 4.1 | |
3000 | 1280x720 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 4.1 | |
4300 | 1920x1080 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 4.1 | |
5800 | 1920x1080 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 4.1 | |
8000 | 3840×2160 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 5.1 | |
10000 | 3840×2160 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 5.1 | |
15000 | 3840×2160 | 64 HE-AAC + E-AC-3 (where 5.1) | HEVC Main and Main 10 Profiles 5.1 |
Many Android Phones only support 3.1 – however that is only up to 720p. Android TV mandates 4.1, which supports 4K. OpenTV Player supports 5. 1 on IOS but not on Android.