如何暂停/恢复与mediarecorder创建的录制？ [英] How to pause/resume a recording created with mediarecorder?

问题描述

我想暂停录制的来电，并在稍后继续。我使用的是安卓 mediarecorder ，并试图在 MPEG4 录制。我想暂停/带复位/停止记录，并与 setOutputFile（FD）启动它恢复， FD 作为文件描述符已停止/暂停，并希望它追加，但我有没有运气的音频文件。有没有办法实现这个或追加两个记录或者我应该放弃对 mediarecorder 。

I'm trying to pause a recording on an incoming call and resume it later. i'm using the andriod mediarecorder and trying to record in MPEG4. I tried pause/resume with resetting/stopping a recording and starting it with the setOutputFile(fd), fd being the filedescriptor of the audio file that was stopped/paused and hoped it would append but i had no luck. Is there a way to achieve this or append two recordings or should i give up on mediarecorder.

code：

private MediaRecorder media_recorder;
private String file_path = null;

public void startRecording(path)
{
  file_path = path
  media_recorder= new MediaRecorder();
  media_recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
  media_recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
  media_recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
  media_recorder.setOputputFile(path);
  media_recorder.prepare();
}

public void pauseRecording()
{
  media_recorder.stop();
  media_recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
  media_recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
  media_recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
  FileOutputStream paused_file = new FileOutputStream(file_path);
  media_recorder.setOutputFile(paused_file.getFD());
}

public void resumeRecording()
{
  media_recorder.prepare();
  media_recorder.start();
}

pauseRecording（）停止记录，但恢复失败，消息启动失败。。

pauseRecording() stops the recording but resume fails with message start failed.

推荐答案

你的问题简单的答案是不，你不能

Simple answer for your question is NO YOU CAN'T

一旦你记录的唯一可能的操作是停止和复位。

所以尽量保存您的通话，以SD卡停止后，然后再次重新开始记录和停止它。 最后合并两组音频文件到一个音频文件。

So try to save your Call to SDCard after you Stop , and then again start Fresh Record and Stop it. Finally Combine both Audio File into one Audio file.

录制音频为.wav文件，结合使用此格式。

Record the audio as .wav file and Combine using this format.

这篇关于如何暂停/恢复与mediarecorder创建的录制？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！