Custom Video Track - Flutter

• You can create a Video Track using createCameraVideoTrack() method of VideoSDK class.
• This method can be used to create video track using different encoding parameters, camera facing mode, and optimization mode.

Parameters

• cameraId:

  • type: String
  • required: false
  • It will be the id of the camera from which the video should be captured.

• encoderConfig:

  • type: CustomTrackVideoConfig
  • required: false
  • default: h360p_w640p
  • You can chose from the below mentioned list of values for the encoder config.

Encoder Config	Resolution	Frame Rate	Bitrate
h90p_w160p	160x90	15 fps	60000 kbps
h180p_w320p	320x180	15 fps	120000 kbps
h216p_w384p	384x216	15 fps	180000 kbps
h360p_w640p	640x360	20 fps	300000 kbps
h540p_w960p	960x540	25 fps	600000 kbps
h720p_w1280p	1280x720	30 fps	2000000 kbps
h1080p_w1920p	1920x1080	30 fps	3000000 kbps
h1440p_w2560p	2560x1440	30 fps	5000000 kbps
h2160p_w3840p	3840x2160	30 fps	8000000 kbps
h120p_w160p	160x120	15 fps	80000 kbps
h180p_w240p	240x180	15 fps	100000 kbps
h240p_w320p	320x240	15 fps	150000 kbps
h360p_w480p	480x360	20 fps	225000 kbps
h480p_w640p	640x480	25 fps	300000 kbps
h540p_w720p	720x540	30 fps	450000 kbps
h720p_w960p	960x720	30 fps	1500000 kbps
h1080p_w1440p	1440x1080	30 fps	2500000 kbps
h1440p_w1920p	1920x1440	30 fps	3500000 kbps

note

Above mentioned encoder configurations are valid for both, landscape as well as portrait mode.

• facingMode:

  • type: String
  • required: false
  • Allowed values : front | environment
  • It will specify whether to use front or back camera for the video track.

• multiStream

  • type: boolean
  • required: false
  • default: true
  • It will specify if the stream should send multiple resolution layers or single resolution layer.

caution

MultiStream functionality is not supported in the Firefox browser. VideoSDK will only send one stream for Firefox browsers.

info

• To learn more about optimizations and best practices for using custom video tracks, follow this guide.
• This parameter is only available from v1.0.9.

Returns

• Future<CustomTrack>

Example

CustomTrack videoTrack = await VideoSDK.createCameraVideoTrack(
      encoderConfig: CustomVideoTrackConfig.h1440p_w1920p,
      multiStream: false,
      facingMode:"user",
    );

Custom Audio Track - Flutter

• You can create a Audio Track using createMicrophoneAudioTrack() method of VideoSDK class.
• This method can be used to create audio track using different encoding parameters and noise cancellation configuration.

Parameters

• microphoneId:

  • type: String
  • required: false
  • It will be the id of the mic from which the audio should be captured.

• encoderConfig:

  • type: CustomTrackAudioConfig
  • required: false
  • default: speech_standard
  • You can chose from the below mentioned list of values for the encoder config.

Encoder Config	Bitrate	Auto Gain	Echo Cancellation	Noise Suppression
speech_low_quality	16 kbps	TRUE	TRUE	TRUE
speech_standard	24 kbps	TRUE	TRUE	TRUE
music_standard	32 kbps	FALSE	FALSE	FALSE
standard_stereo	64 kbps	FALSE	FALSE	FALSE
high_quality	128 kbps	FALSE	FALSE	FALSE
high_quality_stereo	192 kbps	FALSE	FALSE	FALSE

• noiseConfig

  • echoCancellation

    • type: boolean
    • required: false
    • If true echo cancellation will turned on else it would be turned off.

  • autoGainControl

    • type: boolean
    • required: false
    • If true auto gain will turned on else it would be turned off.

  • noiseSuppression

    • type: boolean
    • required: false
    • If true noise suppression will turned on else it would be turned off.

Returns

• Future<CustomTrack>

Example

CustomTrack audioTrack = await VideoSDK.createMicrophoneAudioTrack(
        encoderConfig: CustomAudioTrackConfig.high_quality);