MediaMetadataRetriever getFrameAtTime return first frame only

Question

The below code returns(test.gif) only the first frame and makes a gif with the 5 same frames (video first frame).

I read most questions in StackOverflow but I can't figure out what cause this problem.

Also, per some suggestions, I tried to use mmRetriever.getFrameAtTime with MediaMetadataRetriever.OPTION_CLOSEST option with no success.

@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {

            Uri vid = data.getData();
            videoPath = getPath(vid);

            MediaMetadataRetriever mmRetriever = new MediaMetadataRetriever();
            mmRetriever.setDataSource(videoPath);
            String METADATA_KEY_DURATION = mmRetriever  
                    .extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);  


            ByteArrayOutputStream bos = new ByteArrayOutputStream(); 

            AnimatedGifEncoder encoder = new AnimatedGifEncoder();
            encoder.setDelay(30);
            encoder.start(bos);

            int max = (int) Long.parseLong(METADATA_KEY_DURATION);
            Log.i("max",String.valueOf(max));
            for (int i=1000000;i<max*1000;i+=1000000) {
                Log.i("i",String.valueOf(i));   

                Bitmap bitmap = mmRetriever.getFrameAtTime(i,MediaMetadataRetriever.OPTION_CLOSEST);

                encoder.addFrame(bitmap);


            }
            encoder.finish();
            try {
                String filepath = Environment.getExternalStorageDirectory()
                        + File.separator + "test.gif";
                FileOutputStream outStream = new FileOutputStream(filepath);
                outStream.write(bos.toByteArray());
                outStream.close();
                GifAnimationDrawable big = new GifAnimationDrawable(
                        new FileInputStream(filepath));

                imageview.setImageDrawable(big);
                big.setVisible(true, true);

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

        }

    }

Log return max value about 5000

I can't understand why this question give negatives? where is problem?i have problem and give details as i can, — hosein, Oct 15 '14 at 17:36

score 1 · Answer 1 · edited May 23 '17 at 12:25

1

From this source:

MediaMetadataRetriever's getFrameAt method takes in microseconds (1/1000000th of a second) instead of milliseconds, so in your case it is always rounding down to the 1st frame.

edited May 23 '17 at 12:25

Community

1
1

answered Oct 15 '14 at 16:52

William Seemann

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i update code with: for (int i=1000000;i – hosein Oct 15 '14 at 16:56
William, what this mean,i use log and i is equal 1000000,2000000,... in each step, is't it correct? – hosein Oct 15 '14 at 17:31
first frame returns problem, same as what give at first – hosein Oct 15 '14 at 18:58

MediaMetadataRetriever getFrameAtTime return first frame only

1 Answers1