OMwiki:Tech

Revision as of 22:57, 20 September 2009

Known issues:

(Listed in order of severity.)

• Videos don't always start playing automatically after 'play' icon is clicked. Bumping the seek marker slightly to the right helps. Might be related to doActualPlay in nativeEmbed.js.

• Find a way to add style="width:352px;" to embed code in 352×240 streams.

• Speaker labels work for annotations but not transcripts. Also need to figure out AJAX auto-complete magic.

• Search works but has a few issues (punctuation stripped, 'play inline' plays audio although video is paused, search-by-date not yet enabled for all videos)

• Edit MediaWiki:Common.js to download animated gifs only when 'show' is clicked to avoid long page loads.

• Video playback might take ~6 seconds to start for timecodes towards the end of the meeting (pending seeking support in oggz-chop)

• Cinelerra-CV is buggy (compilation from source helps). Document rendering options on other video editors (e.g., XiphQT)

Scripts needed:

• Retool download_from_archive_org.php to work with different source videos and meta tags from the Internet Archive. Simultaneously generate Media RSS <items> from the same information, and insert date_start_time into mv_streams.
• Script to import MetaVidWiki clips from apps that can produce .srt or .cmml captions (e.g., Gnome Subtitles)
• Find a command-line script that produces .torrents that include multiple HTTP seeds, no tracker, a comment, and works with Mainline.

New Features

• Email thread on MetaVid-l

• Add a Vorbis-only option on video streams for low-bandwidth connections.

• Replace animated GIFs with low-FPS, clickable, enlargeable Theora. Alternatively, use Pad.ma-style mouse-overs (see $(imagePoster).load(function() {...})).

• Add YUV4MPEG support in Blender to enable direct output to ffmpeg2theora (email thread)

• Squash bugs (esp., video non-playback) in mwEmbed's libSequencer.

• Identify a way to output time ranges generated from multi-speaker audio files, with each time range corresponding to the duration of how long a person spoke for (CMU Sphinx?). Hopefully add speaker identification based on the vocal profile, and maybe even facial recognition.

• Figure out a content delivery network.

Communicate:

• Join and post to MetaVid-l
• Join #metavid and #mediawiki. No IRC? Click here to join via a webclient.
• Have your work recognized on Sunlight Labs: Projects by contributing code.