iOS同时录制视频和播放MP3

发布于 2024-12-13 19:20:16 字数 778 浏览 2 评论 0原文

我需要从 iPhone 摄像头录制视频，并同时播放 MP3 文件。

我从 AVCam 示例代码开始，我相信你们都有。它非常适合录制视频。

不过，我随后添加了以下代码来播放 MP3。这个 MP3 播放代码在我的另一个应用程序中工作，但是当我将其插入到此示例代码中时，MP3 不仅无法播放，而且 AVCamCaptureManager 的 reportingDidFinishToOutputFileURL 永远不会被调用，因此视频永远不会被保存。

就像音频播放代码与视频捕获代码冲突一样。有什么想法吗？

这是我放入 AVCam 中的音频播放代码：

 AVAudioPlayer *audioPlayer = nil;
    NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/soundeffect.mp3", [[NSBundle mainBundle] resourcePath]]];
    audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
    [audioPlayer setVolume:1.0]; 
    [audioPlayer prepareToPlay];
    [m_audioPlayer play];

这里的代码非常简单。不知道为什么这个音频播放代码会导致recordingDidFinishToOutputFileURL永远不会被调用...

感谢您的任何想法。

原文

I need to record video from the iPhone camera, and play an MP3 file at the same time.

I started with AVCam sample code, which I'm sure you all have. It works great for recording video.

However, I then added the following code to play an MP3. This MP3-playing code works in a different app of mine, but when I insert it into this sample code the MP3 not only does not play, the AVCamCaptureManager's recordingDidFinishToOutputFileURL never gets called, so the video never gets saved out.

It's like the audio playing code conflicts with the video capture code. Any ideas?

Here's the audio playing code I put into AVCam:

 AVAudioPlayer *audioPlayer = nil;
    NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/soundeffect.mp3", [[NSBundle mainBundle] resourcePath]]];
    audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
    [audioPlayer setVolume:1.0]; 
    [audioPlayer prepareToPlay];
    [m_audioPlayer play];

Pretty simple code here. Not sure why this audio playing code causes recordingDidFinishToOutputFileURL to never get called...

Thanks for any ideas.

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