OHOS-Media-Recorder.md - Openharmony v1.0 / docs / api / api-SmartVision-Devices - 最全华为鸿蒙分布式操作系统技术资料库，手册，指南

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OHOS-Media-Recorder.md

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Openharmony v1.0 / docs / api / api-SmartVision-Devices

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# OHOS::Media::Recorder
## **Overview**
**Related Modules:**
[MultiMedia\_Recorder](MultiMedia_Recorder.md)
**Description:**
Provides functions for audio and video recording.
**Since:**
1.0
**Version:**
1.0
## **Summary**
## Public Member Functions

Public Member Function Name	Description
SetVideoSource (VideoSourceType source, int32_t &sourceId)	int32_t Sets a video source for recording.
SetVideoEncoder (int32_t sourceId, VideoCodecFormat encoder)	int32_t Sets a video encoder for recording.
SetVideoSize (int32_t sourceId, int32_t width, int32_t height)	int32_t Sets the width and height of the video to record.
SetVideoFrameRate (int32_t sourceId, int32_t frameRate)	int32_t Sets the frame rate of the video to record.
SetVideoEncodingBitRate (int32_t sourceId, int32_t rate)	int32_t Sets the encoding bit rate of the video to record.
SetCaptureRate (int32_t sourceId, double fps)	int32_t Sets the video capture rate.
GetSurface (int32_t sourceId)	std::shared_ptr< OHOS::Surface > Obtains the surface of the video source.
SetAudioSource (AudioSourceType source, int32_t &sourceId)	int32_t Sets the audio source for recording.
SetAudioEncoder (int32_t sourceId, AudioCodecFormat encoder)	int32_t Sets an audio encoder for recording.
SetAudioSampleRate (int32_t sourceId, int32_t rate)	int32_t Sets the audio sampling rate for recording.
SetAudioChannels (int32_t sourceId, int32_t num)	int32_t Sets the number of audio channels to record.
SetAudioEncodingBitRate (int32_t sourceId, int32_t bitRate)	int32_t Sets the encoding bit rate of the audio to record.
SetMaxDuration (int32_t duration)	int32_t Sets the maximum duration of a recorded file, in seconds.
SetOutputFormat (OutputFormatType format)	int32_t Sets the output file format.
SetOutputPath (const string &path)	int32_t Sets the output file path.
SetOutputFile (int32_t fd)	int32_t Sets the file descriptor (FD) of the output file.
SetNextOutputFile (int32_t fd)	int32_t Sets the FD of the next output file.
SetMaxFileSize (int64_t size)	int32_t Sets the maximum size of a recorded file, in bytes.
SetRecorderCallback (const std::shared_ptr< RecorderCallback > &callback)	int32_t Registers a recording listener.
Prepare ()	int32_t Prepares for recording.
Start ()	int32_t Starts recording.
Pause ()	int32_t Pauses recording.
Resume ()	int32_t Resumes recording.
Stop (bool block)	int32_t Stops recording.
Reset ()	int32_t Resets the recording.
Release ()	int32_t Releases recording resources.
SetFileSplitDuration (FileSplitType type, int64_t timestamp, uint32_t duration)	int32_t Manually splits a video.
SetParameter (int32_t sourceId, const Format &format)	int32_t Sets an extended parameter for recording, for example, RCORDER_PRE_CACHE_DURATION.