Free web video conference software for linux

1VideoConference is a project that can completely revolutionize the way people interact online. 1VideoConference allows its Web, Audio/ Video phone, Skype, Msn and Yahoo users to instantly participate in live web conferences without the need for lengthy downloads or complicated installations. At any time, our host customers can simply drop a small piece of code onto their websites and INSTANTLY create their very own online video conference room.
For our users to get started, all they need is a web cam and an internet connection and seconds later they can show presentations, share applications or users desktops, hold live webinars, discuss new strategies face to face with business partners, and more...
Main features:
- Audio and Video Sharing: Low latency, multi-party video and audio sharing brings back the intimacy of a meeting.
- Presentation and Document Sharing: Share your ideas on a presentation or help your partner edit a document in real time collaboration.
- Application sharing: Say you need to teach someone how to use a new piece of software, instead of trying to walk them through it over the phone or instant message, simply share your application with them and show them how its done.
- Desktop Sharing: Share your entire desktop and control of the mouse/keyboard.
- White Board and Annotations: Anyone in the meeting room can leave annotaions or draw an idea on the white board.
- Chat: Not a featured speaker but still want to get your ideas heard? Do this with the multi-user Instant Messaging feature.
- The Hot Seat: Request a spot as an attendee, feature a guest speaker or introduce a new member of the team.
- Record and Archive: Upon the request of the meeting holder, all the interaction is recorded and archived for sharing with non-attendees.
Enhancements:
- System now more stable.
- All service now peer to peer.
- User can delete uploaded Zip modules.
- Enhanced Module Management.
- Multiple Meetings now supported.
- User can select video quality during runtime.
- Host can set the video size during runtime for the all participants(Full Screen).
- Host can share his/ her own desktop with all the other participants.

Google Video Downloader is a Firefox extension that adds a button in the status bar. You can download the source .flv or .avi file directly in two clicks

If You:

- Would like to download files from other videohostings;
- Have DownThemAll od FlashGot;
- Would like to permanently choose preferred Google Video format.

Konference is (or better: will be) a video-conferencing application for KDE. Since the rewrite (2005/01/25) it supports SIP as the signalling protocol. No longer H323 folks.
Enhancements:
- Added support for transmitting an image instead of video, added support for Arts, fixed various segfaults and reworked configure-dialogs a bit

I like using Amarok for managing my podcasts but I wasnt able to play my video podcasts.

Amarok Video Player adds a PlayVideo/Play menu item to the context menu which runs KMPlayer.

Edit the script to change KMplayer to another video player.

Many users prefer Gnome Window Manager but cant go without Amarok. Gnome Play Video in Totem allows Gnome Users to view video or audio externally in Totem.

This is very useful for Video Podcasts.

Fast Video Download enables you to save embedded video files from various video-hosting servers.
Fast Video Download can save embedded video files from following video-hosting servers:
Angry Alien, Anime Episodes, Anime Forever, Bad Jojo, Blip.TV, Bo-Funk, Bolt, Break.com, Bubblare.dk, CollegeHumor.com, Current.TV, Daily Motion, Danerd.com, eVideo Share, Google Video, Grinvi, iFilm, Libero.IT Video, HI5 (VideoEgg), My Space, MetaCafe, News.NTV.ru, PornoTube, Put File, Streetfire, Totally Crap, You Tube, V-Social and Vidiac.
Main features:
- Just in ONE click on the status-bar or custom toolbar icon, FVD immediately open the regular "Save As" dialog with already placed video title and extension.
- FVD supports additional video formats at Video, Break.com, Blip.TV. You can choose desired format via Preferences.
- FVD is able to pick any multimedia links from embeded objects on ordinary pages
- If theres only single link, standard dialog open immediately. Otherwise, links are listed in pop-up window.
- Processing of embedded YouTube video objects: Special download link will appear under every embedded YouTube Flash-Player posted on common pages such as blogs and web-boards.
- At last, FVD supports DownThemAll and FlashGot: You can turn on interaction with your desired download manager in preferences.

Gaim Video and Voice Support is a friendly fork of the gaim project to concentrate on video and voice support, which will eventually be backported.