MediaCodecExtractImages 2.0.0 API

```
public final class MediaCodecExtractImages

                    
```
Extract frames from an MP4 using MediaExtractor, MediaCodec, and GLES. Put a .mp4 file in "/sdcard/source.mp4" and look for output files named "/sdcard/frame-XX.png".
This uses various features first available in Android "Jellybean" 4.1 (API 16).
(This was derived from bits and pieces of CTS tests, and is packaged as such, but is not currently part of CTS.)

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public final class`	`MediaCodecExtractImages.Cancelable`
`public class`	`MediaCodecExtractImages.Companion`

Constructor Summary

Constructors
Constructor	Description
`MediaCodecExtractImages()`

Method Summary

Modifier and Type	Method	Description
`final Observable<Progress>`	`extractMpegFrames(Uri inputVideo, List<Double> timeInSec, Uri outputDir, Integer photoQuality)`	Tests extraction from an MP4 to a series of PNG files.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MediaCodecExtractImages
```
MediaCodecExtractImages()
```
- Method Detail
  - extractMpegFrames
```
 final Observable<Progress> extractMpegFrames(Uri inputVideo, List<Double> timeInSec, Uri outputDir, Integer photoQuality)
```
    Tests extraction from an MP4 to a series of PNG files.
    We scale the video to 640x480 for the PNG just to demonstrate that we can scale the video with the GPU. If the input video has a different aspect ratio, we could preserve it by adjusting the GL viewport to get letterboxing or pillarboxing, but generally if you're extracting frames you don't want black bars.