Android Video Zoom/Zoom

1. Principle

Instead of directly changing the video aspect ratio of the codec output, the size of the video player window is changed.

2. Set Window

You need to set the window to not exceed the screen size

Mwindow.setflags (WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_ LIMITS);

3. Surfaceview Maintain aspect ratio

Msurfaceholder.setfixedsize (Mvideowidth, mvideoheight);

4. Change Surface window size

Viewgroup.layoutparams layoutparams = (viewgroup.layoutparams) msurface.getlayoutparams (), if (Scale > 4.0f) {    scale = 4.0f;} else if (Scale < 0.25f) {scale    = 0.25f;} Layoutparams.width = (int) (WindowWidth * scale), layoutparams.height = (int) (windowheight * scale); Msurface.setlayoutparams (Layoutparams);

Android Video Zoom/Zoom