I have been trying to record my phone screen (Nexus 5) through command prompt. I have also downloaded the SDK. For some unknown reason I am unable to open or play the file saved using this script:
$adb shell /sdcard/video.mp4
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You can exec this command from the pc
$ adb shell screenrecord /sdcard/video.mp4
Need Android 4.4 (which you should have).
DevBytes: Android 4.4 - Recording App Videos: http://youtu.be/ETzRxxOK_bs