Install

Installation

You assume all the risks that come with flashing an Android device. It's very painless and hard to screw up, but if you do brick your Mini PC you are on your own!

I had problems using mjpg-streamer, uvccapture, fswebcam which return VIDIOC_DQBUF: Invalid argument or something similar. Cheese, gstreamer and vlc player (cvlc) worked. gstreamer worked the best, so that's what we are going to use here.

1. Test USB camera under the original ROM
   • Boot up Mini PC with original ROM and configure your Google account
   • Download camera app if your ROM doesn't have one
   • Plug in your camera and take a picture
   • If that worked then there's a good chance it will work under PicUntu!
2. Install Finless 1.7 ROM on MK808. If you have another Mini PC model check for Finless on that model (you can skip to step 3, but Finless makes the reboot process easier)
   • MK808 "all models" Finless 1.7
   • Also in the repo
   • Extract zip file on Windows PC and read README FIRST.TXT
3. Install PicUntu 0.9 RC3
   • Follow Install directions
   • When complete reboot into PicUntu using terminal with original ROM or Reboot app in Finless Rom (use bootloader option)
   • Make sure networking is working (ping gateway, etc.)
4. Test camera under PicUntu
   • SSH into Mini PC as root/12qwaszx
   • lsusb
     • You should see something like:

     Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
       Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
       Bus 002 Device 002: ID 03f0:a707 Hewlett-Packard

     • Note "Hewlett-Packard" is my camera
   • Add non-privileged user
     • adduser <username>
     • adduser <username> sudo
     • usermod -a -G video <username>
   • Install gstreamer

   apt-get install python-gi python3-gi \
        gstreamer1.0-tools \
        gir1.2-gstreamer-1.0 \
        gir1.2-gst-plugins-base-1.0 \
        gstreamer1.0-plugins-good \
        gstreamer1.0-plugins-ugly \
        gstreamer1.0-plugins-bad \
        gstreamer1.0-libav

   • Install uvcdynctrl

   apt-get install uvcdynctrl

   • reboot
   • SSH in as user you just created
   • Get camera information
     • export GST_DEBUG="*v4l2*:5"
     • gst-launch-1.0 -v v4l2src num-buffers=1 ! fakesink&>debug.txt
     • nano debug.txt
     • Find out what formats are supported (MJPG support, excellent, no encoding required for gstreamer):

     getting src format enumerations
       got 6 format(s):
          YUYV
          MJPG
          YU12 (emulated)
          YV12 (emulated)
          BGR3 (emulated)
          RGB3 (emulated)

     • Find resolutions, frame rates, etc. in debug.txt

     probed caps: video/x-raw, format=(string)YUY2, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/2, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)800, height=(int)600, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)352, height=(int)288, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)176, height=(int)144, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YUY2, width=(int)160, height=(int)120, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; image/jpeg, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; image/jpeg, width=(int)800, height=(int)600, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; image/jpeg, width=(int)640, height=(int)480, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; image/jpeg, width=(int)352, height=(int)288, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; image/jpeg, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; image/jpeg, width=(int)176, height=(int)144, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; image/jpeg, width=(int)160, height=(int)120, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)I420, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)I420, width=(int)800, height=(int)600, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)I420, width=(int)640, height=(int)480, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)I420, width=(int)352, height=(int)288, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)I420, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)I420, width=(int)176, height=(int)144, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)I420, width=(int)160, height=(int)120, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YV12, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YV12, width=(int)800, height=(int)600, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YV12, width=(int)640, height=(int)480, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YV12, width=(int)352, height=(int)288, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YV12, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YV12, width=(int)176, height=(int)144, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)YV12, width=(int)160, height=(int)120, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)BGR, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)BGR, width=(int)800, height=(int)600, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)BGR, width=(int)640, height=(int)480, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)BGR, width=(int)352, height=(int)288, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)BGR, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)BGR, width=(int)176, height=(int)144, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)BGR, width=(int)160, height=(int)120, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)RGB, width=(int)1280, height=(int)720, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)RGB, width=(int)800, height=(int)600, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)RGB, width=(int)640, height=(int)480, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)RGB, width=(int)352, height=(int)288, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)RGB, width=(int)320, height=(int)240, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)RGB, width=(int)176, height=(int)144, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }; video/x-raw, format=(string)RGB, width=(int)160, height=(int)120, interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 25/1, 20/1, 15/1, 10/1, 5/1 }

     • For a more consice list use

       uvcdynctrl -f

     Listing available frame formats for device video0:
       Pixel format: YUYV (YUV 4:2:2 (YUYV); MIME type: video/x-raw-yuv)
         Frame size: 640x480
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 352x288
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 320x240
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 176x144
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 160x120
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 800x600
           Frame rates: 15, 10, 5
         Frame size: 1280x720
           Frame intervals: 2/15, 1/5
       Pixel format: MJPG (MJPEG; MIME type: image/jpeg)
         Frame size: 640x480
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 352x288
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 320x240
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 176x144
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 160x120
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 800x600
           Frame rates: 30, 25, 20, 15, 10, 5
         Frame size: 1280x720
           Frame rates: 30, 25, 20, 15, 10, 5

   • Let's see if we can record a 500 frame video
     • export GST_DEBUG="*v4l2*:0"
     • gst-launch-1.0 v4l2src num-buffers=500 ! image/jpeg ! avimux ! filesink location=video.avi
     • Don't worry about libv4l2: error dequeuing buf: Success messages since we will mute those later on
     • SCP video to your desktop PC and see if it recorded correctly