Ios AVFoundation视频录制音量控制
我正在开发一个应用程序,它可以录制视频,用户可以在其中调节音量。我用AVFoundation做的。我已初始化了Ios AVFoundation视频录制音量控制,ios,avfoundation,avcapturesession,Ios,Avfoundation,Avcapturesession,我正在开发一个应用程序,它可以录制视频,用户可以在其中调节音量。我用AVFoundation做的。我已初始化了AVCaptureSession,并在其中添加了avcaptureaudodataoutput和avcaptureavideodataoutput作为音频和视频输出。我还在这里附上一段代码 AVCaptureSession *session = _captureSession; if (![session.sessionPreset isEqualToString:_ca
AVCaptureSession
,并在其中添加了avcaptureaudodataoutput
和avcaptureavideodataoutput
作为音频和视频输出。我还在这里附上一段代码
AVCaptureSession *session = _captureSession;
if (![session.sessionPreset isEqualToString:_captureSessionPreset]) {
if ([session canSetSessionPreset:_captureSessionPreset]) {
session.sessionPreset = _captureSessionPreset;
} else {
newError = [VideoRecorder createError:@"Cannot set session preset"];
}
}
_videoOutputAdded = NO;
if (self.videoConfiguration.enabled) {
if (_videoOutput == nil) {
_videoOutput = [[AVCaptureVideoDataOutput alloc] init];
_videoOutput.alwaysDiscardsLateVideoFrames = NO;
[_videoOutput setSampleBufferDelegate:self queue:_sessionQueue];
}
if (![session.outputs containsObject:_videoOutput]) {
if ([session canAddOutput:_videoOutput]) {
[session addOutput:_videoOutput];
_videoOutputAdded = YES;
} else {
if (newError == nil) {
newError = [VideoRecorder createError:@"Cannot add videoOutput inside the session"];
}
}
}
else {
_videoOutputAdded = YES;
}
}
_audioOutputAdded = NO;
if (self.audioConfiguration.enabled) {
if (_audioOutput == nil) {
_audioOutput = [[AVCaptureAudioDataOutput alloc] init];
[_audioOutput setSampleBufferDelegate:self queue:_sessionQueue];
}
if (![session.outputs containsObject:_audioOutput]) {
if ([session canAddOutput:_audioOutput]) {
[session addOutput:_audioOutput];
_audioOutputAdded = YES;
} else {
if (newError == nil) {
newError = [VideoRecorder createError:@"Cannot add audioOutput inside the sesssion"];
}
}
} else {
_audioOutputAdded = YES;
}
}
如何调整与此AVCaptureSession
关联的AVCaptureConnection
的音量,因为它似乎仅适用于mac
录制时如何调整录制音量
请让我知道是否有任何其他方法来实现这一点