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Audio and video recording is used to record audio and video and encapsulate output files based on the configured encoding format, sampling rate, and bit rate.
The audio and video recording APIs are as follows. For details about the APIs, see the interface document.
Table 1 Audio and Video Recording APIs
None
This API is used to create a Recorder instance.
Recorder *recorder = Recorder::CreateRecorder();
Sets Recorder parameters, including the audio and video source information, audio and video encoding format, sampling rate, bit rate, and video width and height.
int32_t sampleRate = 48000;
int32_t channelCount = 1;
AudioCodecFormat audioFormat = AAC_LC;
AudioSourceType inputSource = AUDIO_MIC;
int32_t audioEncodingBitRate = sampleRate;
VideoSourceType source = VIDEO_SOURCE_SURFACE_ES;
int32_t frameRate = 30;
float fps = 30;
int32_t rate = 4096;
int32_t sourceId = 0;
int32_t audioSourceId = 0;
int32_t width = 1920;
int32_t height = 1080;
VideoCodecFormat encoder = H264;
recorder->SetVideoSource(source, sourceId); // Set the video source and obtain the sourceId.
recorder->SetVideoEncoder(sourceId, encoder); // Set the video encoding format.
recorder->SetVideoSize(sourceId, width, height); // Set the video width and height.
recorder->SetVideoFrameRate(sourceId, frameRate); // Set the video frame rate.
recorder->SetVideoEncodingBitRate(sourceId, rate); //: Sets the video encoding bit rate.
recorder->SetCaptureRate(sourceId, frameRate); //: Sets the frame capture rate of video frames.
recorder->SetAudioSource(inputSource, audioSourceId); // Set the audio source and obtain audioSourceId.
recorder->SetAudioEncoder(audioSourceId, audioFormat); // Set the audio encoding format.
recorder->SetAudioSampleRate(audioSourceId, sampleRate); // Set the audio sampling rate.
recorder->SetAudioChannels(audioSourceId, channelCount); // Set the number of audio channels.
recorder->SetAudioEncodingBitRate(audioSourceId, audioEncodingBitRate); // Set the audio encoding bit rate.
Prepare for the recording. The Recorder prepares for the recording.
recorder->Prepare(); // Prepares for recording.
The Recorder starts recording based on the configured audio and video sources.
recorder->Start(); // Start recording.
Stop recording and release resources.
recorder->Stop(); // Stop recording.
recorder->Release(); // Release recording resources.
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