Is it possible to get the resolution of a video in Android?

问题

I'm looking for a way to get the resolution of any given video in Android. It doesn't have to work with other formats than the ones supported in Android, but it'd be great if it did. If you're unsure of the supported formats in Android, please refer to this page:

http://developer.android.com/guide/appendix/media-formats.html

I think it's possible to do what I want using the MediaPlayer class, but that seems incredibly stupid and inefficient. Also, I'd like a way that's relatively fast.

I'm targeting Android 3.0+, if that makes any difference. Honeycomb also supports .mkv files, although it's not officially supported until Android 4.0.

回答1:

You can use the MediaMetadataRetriever to retrieve resolution information about a video file. You'd use the extractMetadata() method and using the METADATA_KEY_VIDEO_HEIGHT and METADATA_KEY_VIDEO_WIDTH constants. So you'd do something like this:

MediaMetadataRetriever metaRetriever = new MediaMetadataRetriever();
metaRetriever.setDataSource(/* file descriptor or file path goes here */);
String height = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
String width = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);

回答2:

Trick for API 10+:

MediaMetadataRetriever mRetriever = new MediaMetadataRetriever();
mRetriever.setDataSource("video_file_path");
Bitmap frame = mRetriever.getFrameAtTime();

int width = frame.getWidth();
int height = frame.getHeight();

We are simple taking a random frame from our video and detecting its width and height.

回答3:

If you have Video Content URI then you can also use content provider query

Like

    Cursor mediaCursor = getContentResolver().query(
                        videoContentURI,
                        {MediaStore.Video.Media.RESOLUTION}, null, null, null);
        if (mediaCursor != null) {
                    if (mediaCursor.moveToFirst()) {
        //The resolution of the video file, formatted as "XxY"
        String resolution=mediaCursor.getString(mediaCursor
                                  .getColumnIndex(MediaStore.Video.Media.RESOLUTION));
    }
}

You can check following post to get ContentURI from video Physical Path

来源：https://stackoverflow.com/questions/8000978/is-it-possible-to-get-the-resolution-of-a-video-in-android