Android Create Video Thumbnail at specific time

Question

I already got it to create a thumbnail from my video. The code looks like this:

videoGalleryThumbnails.add(ThumbnailUtils.extractThumbnail(ThumbnailUtils.cre         


        

Answer 1

need little changes for this code:

try {

    MediaMetadataRetriever retriever = new MediaMetadataRetriever();

//have to control the version for the setDataSource

   if (Build.VERSION.SDK_INT >= 14)
       retriever.setDataSource(video_path, new HashMap<String, String>());
   else
       retriever.setDataSource(video_path);
   int timeInSeconds = 5;
   Bitmap thumb = retriever.getFrameAtTime(timeInSeconds * 1000000,
                                MediaMetadataRetriever.OPTION_CLOSEST_SYNC);
   imageViewThumb.setImageBitmap(thumb);
   } catch (Exception ex) {
        ex.printStackTrace();
   }

if we don't control the version for "setDataSource" then we will get exceptions. for me it was not working until version controlling.

Answer 2

Ok i got it. The MediaMetadataRetriever was absolutely the right way to go. The problem is, that it counts the time in microseconds and not in seconds. Solution looks like this:

try {
        retriever.setDataSource(videoFile.getAbsolutePath());
        int timeInSeconds = 30;
        myBitmap = retriever.getFrameAtTime(timeInSeconds * 1000000,
                    MediaMetadataRetriever.OPTION_CLOSEST_SYNC); 
    } catch (Exception ex) {
        Log.i("MyDebugCode", "MediaMetadataRetriever got exception:" + ex);
    }

videoGalleryThumbnails.add(myBitmap);

I don't know, if OPTION_CLOSEST_SYNC is actually needed, but it looks like this is the better way for programming.

Thanks to William Riley for pointing me in the right direction.