如何在Android上确定视频宽度和高度

Question

我有一个视频文件,我想获得视频的宽度和高度.我不想玩它,只是为了获得尺寸.我试过使用MediaPlayer:

MediaPlayer mp = new MediaPlayer();
mp.setDataSource(uriString);
mp.prepare();
int width = mp.getVideoWidth();
int height = mp.getVideoHeight();

但它的宽度和高度返回0,因为VideoSizeChangedEvent尚未触发.如何获得视频的宽度和高度？

UPD:我需要API版本7

Answer 1

这适用于API级别10及以上:

MediaMetadataRetriever retriever = new MediaMetadataRetriever();
retriever.setDataSource("/path/to/video.mp4");
int width = Integer.valueOf(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH));
int height = Integer.valueOf(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT));
retriever.release();

Answer 2

试试这个代码,让我知道是否有任何问题..

public int getVideoWidthOrHeight(File file, String widthOrHeight) {
    MediaMetadataRetriever retriever = null;
    Bitmap bmp = null;
    FileInputStream inputStream = null;
    int mWidthHeight = 0;                                                                                                                
    try {
        retriever = new  MediaMetadataRetriever();
        inputStream = new FileInputStream(file.getAbsolutePath());
        retriever.setDataSource(inputStream.getFD());
        bmp = retriever.getFrameAtTime();
        if (widthOrHeight.equals("width")){
            mWidthHeight = bmp.getWidth();
        }else {
            mWidthHeight = bmp.getHeight();
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (RuntimeException e) {
        e.printStackTrace();
    } finally{
       if (retriever != null){
           retriever.release()
       }if (inputStream != null){
           inputStream.close()
       }
    }  
    return mWidthHeight;
}

Answer 3

这对我有用

videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(final MediaPlayer mp) {
                int width = mp.getVideoWidth();
                int height = mp.getVideoHeight();
            }
        });

Answer 4

API级别7解决方案:

// get video dimensions
MediaPlayer mp = new MediaPlayer();
        try {
            mp.setDataSource(filename);
            mp.prepare();
            mp.setOnVideoSizeChangedListener(new OnVideoSizeChangedListener() {
                @Override
                public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {

                    int orient = -1;

                    if(width < height)
                        orient = 1;
                    else
                        orient = 0;

                }
            });
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

Answer 5

private static final Uri MOVIE_URI = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
private static final String[] MOVIE_PJT = new String[] {
        MediaStore.Video.Media._ID, MediaStore.Video.Media.DATA,
        MediaStore.Video.Media.TITLE, MediaStore.Video.Media.DATE_TAKEN,
        MediaStore.Video.Media.MIME_TYPE, MediaStore.Video.Media.DURATION,
        MediaStore.Video.Media.SIZE, MediaStore.Video.Media.RESOLUTION };

尝试从系统内容提供商查询。它将返回视频（本地文件）的一些有用信息