Android KitKat Native Screen Recording
I’ve just tried it out and it is absolutely awesome!
Before I start, I’d like to thank Android Police for the initial information on how to do it, in this article.
There are two ways to go about this, the first is to use a terminal emulator (you’ll need root) on your phone to execute the commands and the second is to download ADB and execute the commands through your terminal.
Additionally, the command has the following paremeters, the notable limitation being that it can only record for a maximum of 3 minutes.
Usage: screenrecord [options] <filename> Records the device's display to a .mp4 file. Options: --size WIDTHxHEIGHT Set the video size, e.g. "1280x720". Default is the device's main display resolution (if supported), 1280x720 if not. For best results, use a size supported by the AVC encoder. --bit-rate RATE Set the video bit rate, in megabits per second. Default 4Mbps. --time-limit TIME Set the maximum recording time, in seconds. Default / maximum is 180. --rotate Rotate the output 90 degrees. --verbose Display interesting information on stdout. --help Show this message. Recording continues until Ctrl-C is hit or the time limit is reached.
Further documentation is available here.
Method 1 - Terminal & Super User
Make sure you’ve applied ChainFire’s superSU and have a rooted device. Download a terminal emulator, I used this one.
Open up the terminal emulator and type the following:
A little SuperUser popup should appear, grant permission. This will give the terminal root access. Next type this in:
Now you can make your screen recording. Once you’ve finished, head back to the emulator and press Volume Down + C, a little
^C should appear, then press enter. You can then upload your screen recording via Dropbox or another app, or just transfer the file over USB.
Method 2 - ADB
Download ADB (Android Debug Tool) which you can download from this XDA thread, alternatively download it directly from here. Neither of those are ‘proper’ downloads. If you want to download directly from Google, you’ll need to download the SDK.
Okay, once that’s done, it’s pretty simple. Plug in your phone via USB, enable USB Debugging on your phone. Then open the folder containing ADB in Terminal and enter the following:
./adb shell screenrecord /sdcard/FILE.mp4
Once you’ve done that, it will begin recording. It might also be a good idea to go into Developer Options and enable ‘Show Touches’, so that people can see what you’re touching.
When you’ve finished recording, hit Ctrl+C in Terminal to end the process, then use the following command to download the file:
./adb pull /sdcard/FILE.mp4
I tried it out myself;
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