Prepare content source: encoding specification
Overview
This document outlines the encoding specifications that should be used for SSAI live and VoD content, unless otherwise specified.
Encoding specification
We recommend the following bitrate ladder for live and VoD content. This will ensure a smooth streaming experience and optimal quality on all devices and connection types.
SD-profile
{ "Version": 1.0,
"Codecs": [{
"KeyFrameInterval": "00:00:01.92",
"H264Layers": [{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 320,
"MaxBitrate": 320,
"BufferWindow": "00:00:05",
"Width": 320,
"Height": 180,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 600,
"MaxBitrate": 600,
"BufferWindow": "00:00:05",
"Width": 480,
"Height": 280,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 960,
"MaxBitrate": 960,
"BufferWindow": "00:00:05",
"Width": 640,
"Height": 360,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 1850,
"MaxBitrate": 1850,
"BufferWindow": "00:00:05",
"Width": 960,
"Height": 540,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
}
],
"Type": "H264Video"
},
{
"Profile": "AACLC",
"Channels": 2,
"SamplingRate": 48000,
"Bitrate": 128,
"Type": "AACAudio"
}
]
}HD-profile
{ "Version": 1.0,
"Codecs": [{
"KeyFrameInterval": "00:00:01.92",
"H264Layers": [{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 320,
"MaxBitrate": 320,
"BufferWindow": "00:00:05",
"Width": 320,
"Height": 180,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 600,
"MaxBitrate": 600,
"BufferWindow": "00:00:05",
"Width": 480,
"Height": 280,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 960,
"MaxBitrate": 960,
"BufferWindow": "00:00:05",
"Width": 640,
"Height": 360,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 1850,
"MaxBitrate": 1850,
"BufferWindow": "00:00:05",
"Width": 960,
"Height": 540,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "3.1",
"Bitrate": 2940,
"MaxBitrate": 2940,
"BufferWindow": "00:00:05",
"Width": 1280,
"Height": 720,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
},
{
"Profile": "Main",
"Level": "4.1",
"Bitrate": 4230,
"MaxBitrate": 4230,
"BufferWindow": "00:00:05",
"Width": 1920,
"Height": 1080,
"BFrames": 0,
"ReferenceFrames": 3,
"AdaptiveBFrame": false,
"Type": "H264Layer",
"FrameRate": "25000/1000"
}
],
"Type": "H264Video"
},
{
"Profile": "AACLC",
"Channels": 2,
"SamplingRate": 48000,
"Bitrate": 128,
"Type": "AACAudio"
}
]
}