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I am developing an app which generate .png images from a 1080p video. But the pngs are in MBs, and even my app is crashing due to large size of pngs. I want to compress or something like that to reduce the size of each png. I have done a lot of methods like createScaledBitmap, or compress(CompressFormat.PNG, 20, stream); or Bitmap.createBitmap(source, 0, 0, source.getWidth(),source.getHeight(), m, true); also searched a lot of methods. But it's not reducing the size as much as I want. it still remains in 2.2+ MB per png. Any idea other than these. Thanks.

n1nsa1d00
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Hussnain Muavia
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  • I am also building a app which deals with High resolution images. But on server side I am compressing and re-size the image on server side by using "thumbnailator-0.4.8.jar". – aviundefined Jun 06 '15 at 21:37
  • You will find info on this question/answer helpful. http://stackoverflow.com/a/10652312/940834 – IAmGroot Jun 06 '15 at 21:48
  • A Bitmap uses a lot of memory. If the PNG is 2.2+MB, you can assume the Bitmap is going to be even larger. You need to compress to a lossy image format (JPEG), or reduce the size/quality of the PNG. You're probably better off converting to JPG. – Eugene K Jun 07 '15 at 00:10
  • Try using `compress(CompressFormat.JPEG, 50, stream);` – Phantômaxx Jun 07 '15 at 07:48
  • @Der Golem, Sir i am bounded to use only .png images, i can't use jpeg images – Hussnain Muavia Jun 07 '15 at 18:47
  • @Eugene K , i already tried this method, but its not working, and i need only png images not jpeg. So, even i set to compress(CompressFormat.PNG, 0, stream); but its still give me about 2Mb of bitmap, secondly i also used createBitmap method to resize or crop the image but its not working or the image intensity is much higher that my app still crashing.. – Hussnain Muavia Jun 07 '15 at 18:52

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I am also building an app which deals with high resolution images but on server side. I am compressing and re-sizing the image on server side by using thumbnailator-0.4.8.jar. Example 

InputStream in = new ByteArrayInputStream(bytes);
BufferedImage bImageFromConvert = ImageIO.read( in );
BufferedImage newImage = Thumbnails.of(bImageFromConvert).size(213, 316).asBufferedImage();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(newImage, "jpg", baos);
baos.flush();
retVal = baos.toByteArray();
baos.close();
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aviundefined
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