adb shell screenrecord /sdcard/test.mp4
Records the device's display to a .mp4 file
adb pull /sdcard/test.mp4
Download test.mp4 file from Android Device.
adb shell screenrecord [options] <filename>
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.
Set the video bit rate, in bits per second. Value may be specified as
bits or megabits, e.g. '4000000' is equivalent to '4M'. Default 20Mbps.
Add additional information, such as a timestamp overlay, that is helpful
in videos captured to illustrate bugs.
Set the maximum recording time, in seconds. Default / maximum is 180.
Display interesting information on stdout.