Java使用ffmpeg实现从视频中提取音频 (mp4、mp3)_java 视频转音频

 

    /**
     * 从视频中提取音频
     */
    @Test
    public void videoGetMp3(){
        // 提取命令
        String commit = "$0 -i $1 -ss 00:00:01 -t 00:01:27.0 -vn -b:a 192k -ar 44100 -ac 2 -acodec libmp3lame -y $2";
        // ffmpeg
        String ffmpegPath = "D:\\Java\\operSources\\ffmpeg-4.3.1\\bin\\ffmpeg.exe";
 
 
        String str = commit.replace("$0", ffmpegPath)
                .replace("$1", "D:\\Music\\原创作品\\b3e77534c8bc1ce9ffb8ff2293778eaf.mp4")
                .replace("$2", "D:\\Music\\原创作品\\连锁反应.mp3");
        System.out.println(str);
        Runtime runtime = Runtime.getRuntime();
        try {
            Process proce = runtime.exec(str);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }