UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.86 Safari/537.36

Steps to reproduce the problem:
1. open the following webrtc example link https://webrtc.github.io/samples/src/content/devices/input-output/
2. see the MediaStreamTrack video track that we get from MediaStream with getUserMedia() is started as 'ended'

What is the expected behavior?
that the MediaSteamTrack video track starts successfully and i should see my webcam footage 

What went wrong?
a black screen and a MediaStreamTrack video track with 'ended' readyState

Did this work before? Yes Version 59.0.3071.86 (Official Build) (64-bit)

Does this work in other browsers? N/A

Chrome version: 61.0.3129.0  Channel: canary
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 26.0.0.126

Tried on 3 different computer 1 win7, 2 win10
work fine on 1 win10 computer and black screen on other 2 computer
Restarting the computer didnt change anything
With 1 computer i tried after updating the canary (black screen) and other two was first install (1 black screen, 1 success case).