IMediaRecorder

Used for recording audio and video on the client.

IMediaRecorder can record the following:
  • The audio captured by the local microphone and encoded in AAC format.
  • The video captured by the local camera and encoded by the SDK.
Attention: In the COMMUNICATION channel profile, this feature is unavailable when there are users using SDK versions earlier than v3.0.0.

setMediaRecorderObserver

Registers one IMediaRecorderObserver object.

virtual int setMediaRecorderObserver(const RtcConnection& connection, media::IMediaRecorderObserver* callback) = 0;

Make sure the IRtcEngine is initialized before you call this method.

Parameters

connection
The connection information. See RtcConnection.
callback
The callbacks for recording local audio and video streams. See IMediaRecorderObserver.

Returns

  • 0: Success.
  • < 0: Failure.

startRecording

Starts recording the local audio and video.

virtual int startRecording(const RtcConnection& connection, const media::MediaRecorderConfiguration& config) = 0;

After successfully getting the IMediaRecorder object by calling queryInterface, you can call this method to enable the recoridng of the local audio and video.

This method can record the audio captured by the local microphone and encoded in AAC format, and the video captured by the local camera and encoded in H.264 format. The SDK can generate a recording file only when it detects audio and video streams; when there are no audio and video streams to be recorded or the audio and video streams are interrupted for more than five seconds, the SDK stops the recording and triggers the onRecorderStateChanged(RECORDER_STATE_ERROR, RECORDER_ERROR_NO_STREAM) callback.

Once the recording is started, if the video resolution is changed, the SDK stops the recording; if the sampling rate and audio channel changes, the SDK continues recording and generates audio files respectively.

Attention: Call this method after joining a channel.

Parameters

connection
The connection information. See RtcConnection.
config
The recording configuration. See MediaRecorderConfiguration.

Returns

  • 0: Success.
  • < 0: Failure.
    • 2: The parameter is invalid. Ensure the following:
      • The specified path of the recording file exists and is writable.
      • The specified format of the recording file is supported.
      • The maximum recording duration is correctly set.
    • 4: IRtcEngine does not support the request. The recording is ongoing or the recording stops because an error occurs.
    • 7: A method is called before IRtcEngine is initialized. .

stopRecording

Stops recording the local audio and video.

virtual int stopRecording(const RtcConnection& connection) = 0;
Attention: After calling startRecording, if you want to stop the recording, you must call this method; otherwise, the generated recording files may not be playable.

Parameters

connection
The connection information. See RtcConnection.

Returns

  • 0: Success.
  • < 0: Failure.
    • -7: A method is called before IRtcEngine is initialized.