hParams top-level constant

Map<String, dynamic> const hParams

Map containing the H.264 encoding parameters.

The hParams map contains the following keys:

• encodings: A list of encoding configurations, each represented as a map.
  • rid: The RID (RtpStreamId) of the encoding.
  • maxBitrate: The maximum bitrate for the encoding.
  • initialAvailableBitrate: The initial available bitrate for the encoding.
  • minBitrate: The minimum bitrate for the encoding.
  • scalabilityMode: The scalability mode for the encoding.
  • scaleResolutionDownBy: The scale resolution factor for the encoding.
• codecOptions: A map containing codec-specific options.
  • videoGoogleStartBitrate: The start bitrate for the video codec.

Implementation

const Map<String, dynamic> hParams = {
  'encodings': [
    {
      'rid': 'r8',
      'maxBitrate': 240000,
      'initialAvailableBitrate': 96000,
      'minBitrate': 48000,
      'scalabilityMode': 'L1T3',
      'scaleResolutionDownBy': 4.0,
    },
    {
      'rid': 'r9',
      'maxBitrate': 480000,
      'initialAvailableBitrate': 192000,
      'minBitrate': 96000,
      'scalabilityMode': 'L1T3',
      'scaleResolutionDownBy': 2.0,
    },
    {
      'rid': 'r10',
      'maxBitrate': 960000,
      'initialAvailableBitrate': 384000,
      'minBitrate': 192000,
      'scalabilityMode': 'L1T3',
    },
  ],
  'codecOptions': {
    'videoGoogleStartBitrate': 384,
  },
};