Custom Video Track - Flutter

We have introduced the ability to pass a custom video track for the video of the participants. This feature can be used to add custom video encoder config, and background removal & video filter from external SDK(e.g., Banuba) and send it to other participants.

Creating a Custom Video Track

• 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: CustomVideoTrackConfig
  • required: false
  • default: h360p_w640p
  • Allowed values : h90p_w160p | h180p_w320p | h216p_w384p | h360p_w640p | h540p_w960p | h720p_w1280p | h1080p_w1920p | h1440p_w2560p | h2160p_w3840p | h120p_w160p | h180p_w240p | h240p_w320p | h360p_w480p | h480p_w640p | h540p_w720p | h720p_w960p | h1080p_w1440p | h1440p_w1920p
  • It will be the encoderConfigs you can want to use for the Video Track.

note

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

• facingMode:

  • type: FacingMode
  • required: false
  • Allowed values : FacingMode.front | FacingMode.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.
  info

  • For meetings with fewer than or equal to four participants, setting multiStream:false is regarded as best practice.
  • 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",
    );

Using Custom Video Track

Custom Track while initializing the meeting

If you are passing webcamEnabled: true in the createRoom and want to use custom tracks from start of the meeting, you can pass custom track in the createRoom params as shown below.

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

Room room = VideoSDK.createRoom(
      roomId: widget.meetingId,
      token: widget.token,
      displayName: widget.displayName,
      micEnabled: widget.micEnabled,
      camEnabled: widget.camEnabled,
      maxResolution: 'hd',
      defaultCameraIndex: 1,
      multiStream: false,

      // Pass the custom track here
      customCameraVideoTrack: videoTrack, // custom video track :: optional
      notification: const NotificationInfo(
        title: "Video SDK",
        message: "Video SDK is sharing screen in the meeting",
        icon: "notification_share", // drawable icon name
      ),
    );

Custom Track with enableCam()

In order to switch tracks during the meeting, you have to pass the CustomTrack in the room.enableCam() method.

note

Make sure to call disableCam() before you create a new track as it may lead to unexpected behavior.

CustomTrack? track = await VideoSDK.createCameraVideoTrack(
  facingMode: "environment",
  encoderConfig: CustomVideoTrackConfig.h1440p_w1920p,
  multiStream: true,
);
room.enableCam(track);