[android-developers] Re: How to Increase frame rate (fps) from onPreviewFrame??

muhammad.umer12@hotmail.com wrote:
> hi,
> I am getting frames from onPreviewFrame, compress to jpeg image
> with YUV and send over the network(TCP),
> but the problem is, i want to increase the frame rate. Now it is 4fps
> but i want 15fps and my image size is 4- 6 kb what can i do to
> increase frame rate, here is my code
>
> public void onPreviewFrame(byte[] data, Camera camera) {
>
>
> Camera.Parameters parameters = camera.getParameters();
> int format = parameters.getPreviewFormat();
>
> //YUV formats require more conversion
> if (format == ImageFormat.NV21 /*|| format ==
> ImageFormat.YUY2 || format == ImageFormat.NV16*/)
> {
> int w = parameters.getPreviewSize().width;
> int h = parameters.getPreviewSize().height;
>
> // Get the YuV image
> YuvImage yuv_image = new YuvImage(data, format, w, h,
> null);
> // Convert YuV to Jpeg
> Rect rect = new Rect(0, 0, 320, 240);
> ByteArrayOutputStream output_stream = new
> ByteArrayOutputStream();
> yuv_image.compressToJpeg(rect, 30, output_stream);
> byte[] byt=output_stream.toByteArray();
>
> try {
>
>
> obj.writeObject(byt);
> obj.flush();
>
>
> // Log.d(TAG, "onPictureTaken - wrote bytes: " +
> data.length);
> } catch (FileNotFoundException e) {
> e.printStackTrace();
> } catch (IOException e) {
> e.printStackTrace();
> } finally {
> }
>
> Preview.this.invalidate();
> }
> }
>
>
> Thanks and Regards
> umer

why don't you use MediaRecorder for video capture?

pskink

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