How to capture a frame form MediaPlayer???

eidolon · by **eidolon** » Thu Dec 31, 2009 6:42 am

Hi all,I want to capture the screen as a image when MediaPlayer is playing.How can i do it???

Thx.....

wjspoel · by **wjspoel** » Sat Jan 02, 2010 1:33 pm

I don't have an answer, but I am interested what the solution is (if there is one).

I looked into this a few weeks ago which didn't result in an awnser, but the following things are worth posting...
-The method in the mediaplayer class

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Using java Syntax Highlighting

public native Bitmap getFrameAt(int msec) throws IllegalStateException;
Parsed in 0.030 seconds,  using GeSHi 1.0.8.4

isn't callable.
-MediaMetadataRetriever.captureframe() looks like the solution, but does't exist (2.0) and in previous versions never seemed to work...
-searching for making a "screenshot" of the playing surfaceview also didn't solve anything

possibilities I haven't looked for yet is:
-getting access to the frame buffer
-using the NDK to create the functionality
-...

edit1:
Although it isn't an awnser to your question, maybe it is usable in someway: How to capture screen with coding

edit2:
According to API changes summary of android 2.0 it "looks like" that there is something which can do the trick:

Media
-MediaScanner now generates thumbnails for all images when they are inserted into MediaStore.
-New Thumbnail API for retrieving image and video thumbnails on demand.

... but maybe with a thumbnail the mean the first frame only ...

eidolon · by **eidolon** » Tue Jan 05, 2010 2:53 am

wjspoel wrote:I don't have an answer, but I am interested what the solution is (if there is one).

I looked into this a few weeks ago which didn't result in an awnser, but the following things are worth posting...
-The method in the mediaplayer class
Syntax: [ Download ] [ Hide ]
Syntax: [ Download ] [ Show ]
Using java Syntax Highlighting
public native Bitmap getFrameAt(int msec) throws IllegalStateException;

Parsed in 0.030 seconds, using GeSHi 1.0.8.4

isn't callable.
-MediaMetadataRetriever.captureframe() looks like the solution, but does't exist (2.0) and in previous versions never seemed to work...
-searching for making a "screenshot" of the playing surfaceview also didn't solve anything

possibilities I haven't looked for yet is:
-getting access to the frame buffer
-using the NDK to create the functionality
-...

edit1:
Although it isn't an awnser to your question, maybe it is usable in someway: How to capture screen with coding

edit2:
According to API changes summary of android 2.0 it "looks like" that there is something which can do the trick:
Media
-MediaScanner now generates thumbnails for all images when they are inserted into MediaStore.
-New Thumbnail API for retrieving image and video thumbnails on demand.
... but maybe with a thumbnail the mean the first frame only ...

Thanks very much,I'll try it.

wjspoel · by **wjspoel** » Tue Jan 05, 2010 10:44 am

Your welkom, and I am interested in an answer too

I tried to take a screenshots of a SurfaceView (with the code below) while playing a video, but this results in a black screen...

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Using java Syntax Highlighting

 
               Bitmap screenshot;               
 
                        mPreview.setDrawingCacheEnabled(true); 
 
                        //screenshot = Bitmap.createBitmap(mPreview.getDrawingCache()); 
 
                        screenshot = Bitmap.createBitmap(mPreview.getMeasuredWidth(),
 
                                        mPreview.getMeasuredHeight(), Bitmap.Config.RGB_565);
 
                        mPreview.setDrawingCacheEnabled(false); 
 
                        String filename = String.valueOf(System.currentTimeMillis()) ;
 
                        ContentValues values = new ContentValues();                     
 
                        values.put(Images.Media.TITLE, filename);
 
                        values.put(Images.Media.DATE_ADDED, System.currentTimeMillis()); 
 
                        values.put(Images.Media.MIME_TYPE, "image/jpeg");
 
                        Uri uri = getContentResolver().insert(Images.Media.EXTERNAL_CONTENT_URI, values);
 
                        try {
 
                                OutputStream outStream = getContentResolver().openOutputStream(uri);
 
                                screenshot.compress(Bitmap.CompressFormat.JPEG, 90, outStream);
 
                                outStream.flush();
 
                                outStream.close();
 
                                Log.d("done","done");
 
                        } catch (FileNotFoundException e) {
 
                                // TODO Auto-generated catch block
 
                                e.printStackTrace();
 
                        } catch (IOException e) {
 
                                // TODO Auto-generated catch block
 
                                e.printStackTrace();
 
                        }
 
Parsed in 0.038 seconds,  using GeSHi 1.0.8.4

Gonna test te code with others views to be sure it's not te screenshot code wich is te problem. Secondly, I haven't got enough knowledge about the surfaceview, it's holder, thread etc...So maybe I have to look more into that or maybe someone else can fill in the gaps

How to capture a frame form MediaPlayer???

How to capture a frame form MediaPlayer???

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