• Introduction
• Overview
• How to Use the Open Video Workbook
• Subtitling
• Terms & Techniques: Subtitling
• Case Study: Into the Fire
• Hands-On: Creating Subtitles with Amara
• Resources: Subtitling
• Online Distribution
• Terms & Techniques: Online Video Distribution
• Case Study: Engage Media
• Hands-On: Uploading a Video with Plumi
• Resources: Online Video Distribution
• Creating 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: Open Video Files
• Enhancing Web Video
• Terms & Techniques: Enhancing Web Video
• Case Study: Popcorn Maker
• Hands-On: Using Popcorn Maker
• Case Study: Popcorn.js
• Hands on: Using Popcorn.js
• Resources: Taking Popcorn Further
• Editing Video
• Terms and Techniques: Video Editing
• Case Study: Video Editing for The Record
• Hands-On: Editing an Interview with Kdenlive
• Resources: Video Production
• Creating a DVD
• Terms & Techniques: DVD Authoring
• Case Study: Straight-to-DVD Distribution
• Hands-On: DVD Authoring
• Resources: More on DVDs
• Projection
• Terms & Techniques: Video Projection
• Case Study: SDNA
• Hands-On: Video Projection Mapping with LPMT
• Resources: Projection
• Transcoding and Video Codecs
• Case Study Preparing Mobile Video for Editing
• Hands-On: Transcoding Files with FFmpeg
• Hands-On: Using a Graphical User Interface vs Command Line
• Resources: Using Command Line
• Streaming
• Hands-On: Streaming Video with VLC
• Resources: Streaming
• Appendix
• Outlook: The Politics of Code
• About the Authors

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