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MetaVidWiki is an established community video archive project. Metavid Wiki builds off of the MediaWiki code base, the semantic wiki extension and the open media platform.
MetaVidWiki employs a structured temporal name space with the wiki page model to enable dynamic, versioned metadata for arbitrary stream segments.
Congressional data along with stream metadata is used to build a rich query space for stream segment search.
These segments can then be searched, annotated and sequenced and referenced internally or externally via rss, CMML and json/html- transclusion.
In its most basic usage case can be thought of as an evolution of Extension:OggHandler. It adopts oggHanlders client plugin detection code and then does a bit more fancy things to enable html based playheads, ogg seeking, remote embedding, timed text and a host of other features. These features are abstracted out into separate classes and autoloaded with the scriptLoader so the interface can be clever about loading only what features your using at the right time.
In addition MV_embed provides core engine for other media interfaces. Mv_embed integrates with ScriptLoader php system for just in time loading and grouping of library requests. Here we list the top level folders and short explanation: (extended descriptions for components that need it are listed below
Add Media Wizard is the tool for adding media to pages or sequences. Abstracts the remote repository architecture to work with the new upload api.
So far commons, archive.org and metavid are supported as repositories. Again see the Add Media Wizard for more info.
The metavid archival video project has a more indexical relationship to its content sources than traditional wikis. A transcript page has a strati forward "correct" textual representation of the spoken word.
While categorization, tagging, and semantic properties can be debated the speech spoken in a given time range is generally not controversial.
This allows casual participants to make meaningful contributions without needing to engage in the complexity or politics of textual representation conventions.
While other conventions emerge for structuring metadata, and general guidelines for where temporal segments should start and end, the majority of the wiki work is relatively non-controversial.
Based on the initial work by vodaphone and then Bryan Minh; the new upload api abstracts out the Special:Upload page into a few classes and then extends the mediaWiki an API to support upload contributions. My work is focused on bring that branch up-to-date and adding chunk support for breaking POST requests into 1 meg resumable chunks. The chunk support enables firefogg to progressively upload video content with resume on reset POST requests.
also see the new-upload branch
Can be thought of as the figure editor or "clip" editor. We eventually want to this to be a feature rich layout and layer manipulation tool. Manipulations will be stored in a "stack" and not modify the underlining assets. This lets collaboration occur around the figure editing proccess. It will be usable inline figures in articles and for building "key frames" in sequences.
Currently just crop & video trimming is supported but the base pixastic-lib has been imported with plans to add in hooks to that library.
The same export mechanism for frame serving and exporting video sequences will drive the "flattening" of these figures (since the edit stack will likely include canvas manipulations we will render the figure server side or on the client and use that for display.
These "figures" or "clips" will be template for localization and reuse. All manipulations will be stored in floats (rather than pixel positions) to facilitate seamless scaling up by using higher resolution image assets. This documentation will be fleshed out a bit as the code is ;) We will try and use SMIL like descriptions for crops and filters.
For more updates see: http://metavid.ucsc.edu/wiki/index.php/SitesUsingMetaVidWiki
Missoula City Council Open source hackers from Missoula have braved the bleeding edge of metavidWiki for quite some time.
Their installation of metavid uses open source sphinx speech to text software to generate the initial transcripts.
Open Gov is also working to make it easier for people to set up metavid for their own city councils.
Development is maintained on the MediaWiki repository.