• Introduction
• Overview
• How to Use the Open Video Workbook
• Help Create More Open Video Modules
• Subtitling
• Terms & Techniques: Subtitling
• Case Study: Into the Fire
• Hands-On: Creating Subtitles with Amara
• Resources: Subtitling
• Creating a DVD
• Case Study: Straight-to-DVD Distribution
• Hands-On: DVD Authoring
• Resources: DVDs and Free Software
• Online Distribution
• Case Study: Engage Media
• Hands-On: Uploading a Video with Plumi
• Resources: Online Video Distribution
• Create an Open Video file
• Terms & Techniques: Open Video Files
• Hands-On: Creating Open Video Files with FireFogg
• Hands-On: Creating Open Video Files with Miro Converter
• Resources: Making the Case for Open Video
• Expanding Web Video
• Terms & Techniques: Expanding Web Video
• Case Study: Popcorn Maker
• Hands-On: Popcorn Maker Tutorial
• Hands-On: Crafting your own Popcorn Maker experience
• Hands-On: Matching Events in Popcorn Maker and Popcorn.js
• Case Study: Popcorn.js
• Hands-On: Getting started with visual content in HTML
• Hands-On: Including video in HTML5
• Hands-On: Adding a time-based footnote with popcorn.js
• Resources: Taking Popcorn Further
• Projection
• Terms & Techniques: Video Projection
• Case Study: Projection
• Hands-On: Video Projection Mapping with LPMT
• Resources: Projection
• Editing Video
• Case Study: Video Editing for The Record
• Hands-On: Editing an Interview with Kdenlive
• Transcoding and Video Codecs
• Hands-On: Transcoding Files with FFmpeg
• Hands-On: Using a Graphical User Interface vs Command Line
• Streaming
• Hands-On: Streaming Video with VLC
• Resources: Streaming
• Resources: Open Video Codecs
• Train the Trainer
• Teaching Open Video
• Appendix
• About the Open Video Workbook
• Outlook: The Politics of Code
• Glossary

Resources: Streaming

Most of the time streaming with VLC will be the easiest way to quickly get a feed from a webcam or a file up and available. Sometimes however, there will be situations where you will need more flexible tools. In this section we will give a few short examples from a selection of other available tools. We will start with the Liquidsoap software from Savonet and add more including CVLC, Gstreamer and oggfwd

Liquidsoap

http://savonet.sourceforge.net

Liquidsoap is powerful and flexible language for managing streams. Initially it was used for creating sophisticated web-radio streams it now has the ability to stream video. Expanding on the paradigms of radio, the creations of webtv becomes easy using the integrated playlst, scheduling and compositing tools.
It can use Gstreamer as the video back-end so all the tools and codecs available there also become available to liquidsoap, the Frei0r plugins are also available for applying video effects and there are native tools for compositing logos and scrolling news ticker style text. It also has the capability to receive Open Sound Control (OSC) messages so integration with hard and software controllers becomes possible.

A simple script written to encode, loop and stream a video file to an ogg theora mountpoint on an Icecast server as looks like this:

#############################

# Define a video file to stream:

source = single(“video.avi”)

# Adding some scrolling text:

source = video.add_text.sdl(
font="/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf”, “Hello world!”, source)

# and a logo:

source = video.add_image(
width=30,height=30,
x=10,y=10,
file="logo.jpg”,
source)

# then stream the result to an icecast server:

output.icecast(
%ogg(%theora(quality=25,width=320,height=240),%vorbis),
host="localhost”,
port=8000,
password="hackme”,
mount="/videostream”,
source)

#############################

The above code can be saved in a file called video.liq and then run by typing liquidsoap video.liq

More comprehensive documentation showing off the more possibilities can be found here: http://savonet.sourceforge.net/doc-svn/video.html