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Hardware

In this release, two reference configurations are proposed. One uses an USB web camera the other uses a video capture card, such as the Hauppauge PVR350. In both cases, using a VGA capture card model VGA2USB or superior is recommended.

Video Capture Card

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WebCam USB

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The cookbook section will find solutions for setting capture card in linux

Software

Galicaster is based on Open Source technologies.

The recommended OS for this release is Ubuntu 10.04 LTS.
The installation process consists of five steps: installing dependencies, checking configuration, downloading software, configuring and running.

1.- Install dependences.

Galicaster requires the following software to be installed:

• Gstreamer
• python-setuptools and pip
• iCalendar
• pyCurl
• Capture card configuration tools

$ sudo apt-get install \
    gstreamer0.10-ffmpeg gstreamer0.10-alsa gstreamer0.10-plugins-bad gstreamer0.10-plugins-bad-multiverse \
    gstreamer0.10-plugins-base gstreamer0.10-plugins-base-apps gstreamer0.10-plugins-good \
    gstreamer0.10-plugins-ugly gstreamer0.10-plugins-ugly-multiverse
$ sudo apt-get install python-pip python-setuptools
$ sudo pip install icalendar
$ sudo apt-get install python-pycurl
$ sudo apt-get install v4l-conf ivtv-utils guvcview

In ubuntu 11.04 and above is recommended installing v4l-utils instead of ivtv-utils.

2.- Check configuration.

Launch the following commands from a shell to verify that all dependencies are installed:

$ python --version
Python 2.6.5

$ python -c "import pygtk; pygtk.require('2.0')"
$ python -c "import pygst; pygst.require('0.10')"
$ python -c "import pycurl"
$ python -c "import icalendar"

$ gst-launch v4l2src num-buffers=25 ! video/x-raw-yuv,width=800,framerate=24/1 ! ffmpegcolorspace ! xvimagesink
$ gst-launch v4l2src num-buffers=25 ! video/x-raw-yuv,width=800,framerate=24/1 ! ffmpegcolorspace ! x264enc pass=5 quantizer=22 speed-preset=4 profile=1 ! queue ! avimux ! filesink location=out.avi
$ file out.avi
out.avi: RIFF (little-endian) data, AVI, 800 x 600, ~24 fps, video: H.264 X.264 or H.264
$ rm out.avi

3.- Download software

Download the software from this site.

Uncompress it using tar:

$ tar xzf galicaster-1.0.0-rc.tgz
$ cd galicaster-1.0.0-rc

4.- Configure Galicaster

The values are in the file conf.ini:

Sections:

• basic
  • repository: path to the working folder.
  • admin: enables admin mode (True|False)
  • Example:

    [basic]
    repository = /mnt/videos/Repository
    admin = True
    

• screen
  • right: Name of the video device to be shown in the right screen (None to deactivate).
  • left: Name of the video device to be shown in the left screen (None to deactivate).
  • cursor: Shows or hides the cursor. (True|False)
  • Example:

    [screen]
    right = Epiphan
    left = Hauppagge
    cursor = True
    

• ingest
  • The data to connect Galicaster to an Opencast-Matterhorn server.
  • Example:

    [ingest]
    default = True
    username = matterhorn_system_account
    host = http://admin.matterhorn.es:8080
    password = CHANGE_ME
    workflow = full
    

• trackN
  • Values common to all devices:
    • name: Name assigned to the device.
    • device: Device type. (v4l2|vga2usb|webcam|hauppage|pulse)
    • flavor: Matterhorn "flavor" associated to the track. (presenter|presentation|other)
    • location: Device's mount point in the system (e.g. /dev/video0).
      • For PulseAudio devices run:

        $ pactl -list | grep "Source" -A 5
        

        and use "Name:" as the location field.

    • file: The file name where the track will be recorded.
    • active: Whether the device will be played and recorded. (True|False)
  • Values in audio (pulse) devices:
    • playing: Indicates if the audio, apart from being recorded, is played. (True|False)
    • vumeter: Activates data sending to the program's vumeter. (True|False) Only one device should be activated.
    • amplification: Gstreamer amplification value: < 1 decreases and > 1 increases volume. Values between 1 and 2 are commonly used.
  • Example:

    [track1]
    name = Hauppagge
    loc2 = /dev/hauprevideo
    loc3 = /dev/haupreaudio
    location = /dev/haucamera
    file = CAMERA.mpg
    device = hauppage
    flavor = presenter
    active = False
    
    [track2]
    name = Epiphan
    active = False
    location = /dev/screen
    file = SCREEN.avi
    device = vga2usb
    flavor = presentation
    
    [track3]
    amplification = 2.0
    name = AudioSource
    vumeter = Active
    location = alsa_input.usb-046d_081d_96D1FD90-00-U0x46d0x81d.analog-mono
    file = sound.mp3
    device = pulse
    flavor = presenter
    active = False
    playing = False
    
    [track4]
    name = Webcam
    videocrop-left = 160
    videocrop-right = 160
    caps = image/jpeg,framerate=25/1,width=1280,height=720
    active = False
    location = /dev/webcam
    file = CAMERA.avi
    device = mjpeg
    flavor = presenter
    

5.- Running

Galicaster Class is launched with the command:

$ ./classexec