Screenshot of the Nexus One from adb?

android graphics ffmpeg screenshot
Marcus picture Marcus · May 11, 2010 · Viewed 34.5k times · Source

My goal is to be able to type a one word command and get a screenshot from a rooted Nexus One attached by USB.

So far, I can get the framebuffer which I believe is a 32bit xRGB888 raw image by pulling it like this:

adb pull /dev/graphics/fb0 fb0

From there though, I'm having a hard time getting it converted to a png. I'm trying with ffmpeg like this:

ffmpeg -vframes 1 -vcodec rawvideo -f rawvideo -pix_fmt rgb8888 -s 480x800 -i fb0 -f image2 -vcodec png image.png

That creates a lovely purple image that has parts that vaguely resemble the screen, but it's by no means a clean screenshot.

Answer

Ben Clayton picture Ben Clayton · Aug 3, 2012

A vastly easier solution for ICS is to use the following from the command line

adb shell /system/bin/screencap -p /sdcard/screenshot.png
adb pull /sdcard/screenshot.png screenshot.png

This'll save the screenshot.png file in the current directory.

Tested on a Samsung Galaxy SII & SII running 4.0.3.

Related questions

Android: Background Image Size (in Pixel) which Support All Devices

I am creating an Application which will run on all Android Devices. I want to create xhdpi Graphics for My App. My App is full screen. I am confused in Creating graphics. can any one tell me the best sizes …

Read More
Calculating the angle between the line defined by two points

I'm currently developing a simple 2D game for Android. I have a stationary object that's situated in the center of the screen and I'm trying to get that object to rotate and point to the area on the screen that …

Read More
How do I get the height and width of the Android Navigation Bar programmatically?

The black navigation bar on the bottom of the screen is not easily removable in Android. It has been part of Android since 3.0 as a replacement for hardware buttons. Here is a picture: How can I get the size of …

Read More