Question

我正在录制来自iphone的音频，如下所示：

//Setup the dictionary object with all the recording settings that this
            //Recording sessoin will use
            NSMutableDictionary* recordSetting = [[NSMutableDictionary alloc] init];
            [recordSetting setValue :[NSNumber numberWithInt:kAudioFormatAppleIMA4] forKey:AVFormatIDKey];
            [recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
            [recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];

            //Now that we have our settings we are going to instanciate an instance of our recorder instance.
            //Generate a temp file for use by the recording.
            NSDate *now = [NSDate dateWithTimeIntervalSinceNow:0];
            NSString *caldate = [now description];

            recordedTmpFile = [[NSString stringWithFormat:@"%@/%@.caf", DOCUMENTS_FOLDER, caldate] retain];
            NSLog(@"Using File called: %@",recordedTmpFile);
            url = [NSURL fileURLWithPath:recordedTmpFile];
            error = nil;
            //Setup the recorder to use this file and record to it.
            recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&error];

但我的问题是应用程序，我正在开发的也是为Android开发但使用iPhone和Android的通用服务器。当我将录制的音频从iPhone发布到服务器并尝试在Android中播放该音频时，它会将警报显示为不支持的文件。

我应该记录哪种格式以在iPhone和Android中播放音频？

任何人的帮助都将深受感激。

Answer 1

它以这种方式为我工作：它的AAC格式适用于两者，但当音频在AAC格式的Android设备上编码时，需要将其放入.m4a的容器中，以使其在ios上播放。它简单地改变了扩展名。

例如：

    On android device :   morningtune.aac

    Now Just change the extension of the song


   On ios device :   monrningtune.m4a

首先在Android设备上我使用以下参数录制音频

            recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);

现在只需将输出音频的扩展名更改为“m4a”

iPhone中录制的音频格式也支持和播放Android

1 个答案: