mediaplayer getduration仅在我的服务器文件中返回0 [英] mediaplayer getduration returns 0 only in my server files

问题描述

我正在尝试从服务器获取音频文件的持续时间使用媒体播放器

i'm trying to get the audio file duration from my server using media player

MediaPlayer mp = new MediaPlayer();
    try {
        mp.reset();
        mp.setDataSource("link here");
        mp.prepare();

    }catch (IOException e){
        e.printStackTrace();
    }


    mp.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mediaPlayer) {
            Log.e("time",mp.getDuration()+" ..");
        }
    });

当我放置服务器文件链接时，它总是返回0但是当我使用网络上的另一个链接时，它会给我适当的持续时间

when i put my server file link , it always return 0 but when i use another link from the web it gives me the right duration

我需要为此做一些配置吗?

do i need to do some configuration for that ?

推荐答案

如果无法从服务器获取音频链接的持续时间，则可以尝试此库

If you cannot get duration of an audio link from you server, then you can try this library

https://github.com/wseemann/FFmpegMediaMetadataRetriever

从输入媒体文件中检索元数据(包括持续时间).

To retrieve meta data (including duration) from an input media file.

首先编写一种获取持续时间的方法.

First write a method to get duration.

private int getDurationInMilliseconds(String path) {
    FFmpegMediaMetadataRetriever mmr = new FFmpegMediaMetadataRetriever();
    mmr.setDataSource(path);
    int duration = Integer.parseInt(mmr.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_DURATION));
    mmr.release();
    return duration;
}

然后更改您的代码

final String path = "http://dleelbaha.com/fayziah/download/sound/1536950612.mp3";
final MediaPlayer mp = new MediaPlayer();
try {
    mp.reset();
    mp.setDataSource(path);
    mp.prepare();
} catch (IOException e) {
    e.printStackTrace();
}

mp.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
    @Override
    public void onPrepared(MediaPlayer mediaPlayer) {
        int duration = mp.getDuration();
        if (duration <= 0) {
            duration = getDurationInMilliseconds(path);
        }
        Log.i("time", duration + " ms");
    }
});

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