读取本地视频文件时间

 /**
     * 取得 mp4的时长
     */
    public static long getMp4Duration(File videoFile) {
        if (videoFile == null || !videoFile.exists())
            return 0;
        MediaMetadataRetriever retriever = new MediaMetadataRetriever();
        // source
        try {
            FileInputStream inputStream = new FileInputStream(videoFile.getAbsolutePath());
            retriever.setDataSource(inputStream.getFD());
            String time = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
            long timeInMillisec = Long.parseLong(time);
            inputStream.close();
            return timeInMillisec;
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (RuntimeException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return 0;
    }

将其转化为时分秒

/**
 * @author chenli
 * @create 2020/2/18 0018
 * @Describe
 */
public class TimeFormatUtil {
    /**
     * @param t 毫秒
     */
    public static String format(long t) {

        if (t < 60000) {
            return (t % 60000) / 1000 + "秒";
        } else if ((t >= 60000) && (t < 3600000)) {
            return getString((t % 3600000) / 60000) + ":" + getString((t % 60000) / 1000);
        } else {
            return getString(t / 3600000) + ":" + getString((t % 3600000) / 60000) + ":" + getString((t % 60000) / 1000);
        }
    }


    private static String getString(long t) {
        String m = "";
        if (t > 0) {
            if (t < 10) {
                m = "0" + t;
            } else {
                m = t + "";
            }
        } else {
            m = "00";
        }
        return m;
    }
}