ppt - metavid - open video archive of the us congress

A OPEN VIDEO WIKI PLATFORM

Michael Dale, Abram Stern & Professor Warren Sack

University of California at Santa Cruz


Presentation Overview

Metavid Openness Metavid Demo Up-and-Coming Tech

new skin/interface enhancements oggPusher flash support open source collaborative in-browser video editor.


• Contents: January 2006 – now, over a thousand hours of U.S. Senate and House floor proceedings

• Organization: All contents are indexed according to who said what when. Every second of the proceedings can have an unique address (URL).

• Accessible: open for multiple [re]use contexts

Metavid is an Archive


Open for Citizens open for citizens; web access to congressional footage search for who said what when + bills & categories open for citizen enhancement (its all in a wiki)


Open for Bloggers Clips can be embed, discussed and annotated Embed clips links back to the full day. I can re-

contextualize, re-segment & re-post. Embedded sound byte becomes a reference to full context

rather than only produced content for consumption.


Open for Media Producers

In-browser video editors With archive.org we provide footage for desktop

editors. (not just encapsulated flash video)

MPEG2, MPEG4, flash, ogg HQ, & web streams available anywhere the clip is embedded


Open for Developers Entire site data open for reuse via database

dumps, extensive mediaWiki & semantic mediaWiki api's and Metavid media specific apis

Enables mashups with a wide network of congress data

Open standards enables easy integration into other video applications:

etc.


Open Platform All metavid code is reusable under free

software license (GPL2) No licensing fees for unlimited reuse since we

use patent unencumbered free software

Enables platform reuse ie:metavid forcity council meetings


Open for “Your Wiki”

Dependencies: MediaWiki (svn), Semantic MediaWiki (oggz-chop or mod_annodex) for dynamic ogg

segmentation and streaming. ffmpeg for jpeg thumbnails ffmpeg2theora to generate ogg files. (also works

with flash video) code hosted on wikimedia svn growing community, check #metavid on

irc.freenode.net, email list etc.


demos


Metavid Tech: Mv_embed stand alone JavaScript library to standardize support

of open media formats in contemporary browsers. re-writes <video> tag & simulates html5 video element

across multiple plugins Supports Rich Open multi-track media Encapsulation

format (ROE) allows selection of video sources and inline display of transcripts

Auto selects plugin and video source based on client availability

sample usage: <script type=”text/javascript” src=”mv_embed.js”><video src=”myclip.ogg”>


mv_embed supported plugins

VLC (win,linux,mac) (firefox & IE)

Oggplay (win,linux,mac) (firefox only)

Java cortado (java based win, linux, mac)

Mplayer, Totem/gstreamer (linux firefox only)

Native html5 Opera and firefox

Native Safari, with xiph quicktime component

Flash Plugin (win, linux, mac)


Up-and-Coming

New Skin and Interface Enhancements Unified Search System, with simple/advanced

search switching “Semantic Searches” Simplified access to relevant video content with

relevance, temporal and popularity search modifiers Better integration with rss video feed readers (like

miro) data hooks for in-wiki display of site statics and

other clip data.


Up-and-Coming OggPusher

Client side Firefox extension for easy transcode to free media formats at point of upload.

Rewrites html4 upload forms that “accept” ogg media content types.

<input type="file" accept="video/ogg"/> web service javascript based bitrate & resolution

controls Avoids server side re-transcoding of compressed

media uploaded by limited bandwidth contributors. Very simple to integrate with CMSs (ie mediaWiki) xiph.org SOC student: Nithin Dara


Up-and-Coming Flash Support in mv_embed

fall back for clients without free codec support. implemented as “thin player” for flash video

enables gstreamer, vlc to easily act as “flash” player html5 based video control interface (no proprietary

software needed to update control interface skin) adds html5 js hooks for flash video embedding supports html5 multi source syntax

<video><source type="video/ogg" src="myvid.ogg"/> <source type=”video/flash” src="myvid.flv"/>

</video>

Wikimedia SOC student: Stjepan Rajko


Up-and-Coming

Open Source Video Sequencing: See talk “Open-sourcing Online Video”

Day 3, 11:45 Room C


Supported By A Grant From The

http://www.sunlightfoundation.com/


Questions?

check outhttp://metavid.org

and send feedback [email protected]

thanks

ppt - metavid - open video archive of the us congress

Documents

open video wiki platform

open video wiki platformup

open video wiki platform

open video wiki platform

video applications

flash video code

opensourcing online

html5 video element