UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36

Steps to reproduce the problem:
using the demo https://webrtc.github.io/samples/src/content/peerconnection/constraints/
1. Specifying constraints of min width: 600px
2. Or pick any constraints that should pick a resolution of 640x480

What is the expected behavior?
Should get resolution of 640x480

What went wrong?
Getting this:
Video dimensions: 176x144px

Looks like chrome thinks that 640x480 should be a valid resolution (which it is), but then picks the closest one to that resolution in the Raw yuyv422 space of the camera, not the Compressed mjpeg resolution where this is supported.

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 61.0.3163.100  Channel: stable
OS Version: Ubuntu 16.04
Flash Version: Shockwave Flash 27.0 r0

This used to work in the past, but not sure when it broke.

FFMPEG reports the following for the camera:
ffmpeg -f v4l2 -list_formats all -i /dev/video0
ffmpeg version N-80283-g84efdab Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
  libavutil      55. 24.100 / 55. 24.100
  libavcodec     57. 46.100 / 57. 46.100
  libavformat    57. 37.101 / 57. 37.101
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 46.101 /  6. 46.101
  libavresample   3.  0.  0 /  3.  0.  0
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
[video4linux2,v4l2 @ 0x2c76d60] Raw       :     yuyv422 :           YUYV 4:2:2 : 160x120 176x144
[video4linux2,v4l2 @ 0x2c76d60] Compressed:       mjpeg :          Motion-JPEG : 640x480 160x120 176x144 320x176 320x240 352x288 432x240 544x288 640x360 752x416 800x448 800x600

Chrome://media-internals reports this:
[
  {
    "captureApi": "V4L2 SPLANE",
    "formats": [
      {
        "resolution": "160x120",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "176x144",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "320x176",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "320x240",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "352x288",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "432x240",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "544x288",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "640x360",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "640x480",
        "fps": "30.00",
        "storage": "CPU"
      },
      {
        "resolution": "752x416",
        "fps": "15.00",
        "storage": "CPU"
      },
      {
        "resolution": "800x448",
        "fps": "15.00",
        "storage": "CPU"
      },
      {
        "resolution": "800x600",
        "fps": "15.00",
        "storage": "CPU"
      }
    ],
    "id": "/dev/video0",
    "name": "UVC Camera (046d:0825) (046d:0825)"
  }
]

If selecting a minimum width of anything > 640 picks the next resolution from the supported ones, but anything less than 640 always picks 176x144
The camera works fine in other applications.