Yeah I'd recommend simple MJPEG/PCM for now as something that "works as-is" with some limitations[1], but investing a little time and effort on things like MOX or JPEG2000-in-MXF / Dirac-in-MXF might be wise for the future.
[1] no 4:2:2, 4:4:4, or alpha; highest qual settings are still much lower bandwidth and presumably quality than the ProRes generation. Probably still suitable for many purposes though.
-- brion
On Mon, Nov 10, 2014 at 11:23 AM, Andrew Lih andrew@andrewlih.com wrote:
I second what Sebastian said -- glad we could revive Wikivideo-L to have deeper technical discussions like this that don't annoy the multimedia-L list.
When I have more time, I'd like to test our more of what Brion said. The solution may be right under our nose with older, but tested, solutions like MJPEG/PCM, though we'd still be requiring pretty fast bandwidth to deal with them.
-Andrew
-Andrew Lih Associate professor of journalism, American University Email: andrew@andrewlih.com WEB: http://www.andrewlih.com BOOK: The Wikipedia Revolution: http://www.wikipediarevolution.com PROJECT: Wiki Makes Video http://en.wikipedia.org/wiki/Wikipedia:WikiProject_Wiki_Makes_Video
On Mon, Nov 10, 2014 at 1:55 PM, Sebastiaan ter Burg <terburg@wikimedia.nl
wrote:
wow everyone... this is great stuff where this thread is going! (sorry, not really an addition to the topic discussed. But I wanted to show my appreciation somehow...)
2014-11-10 19:52 GMT+01:00 Ralph Giles giles@thaumas.net:
Earlier, Brion Vibber wrote:
Apparently the US Library of Congress has been archiving videos as MXF (the container format that MOX is planned to be based off) with lossless-mode JPEG 2000 for the video payload... and they're pushing a baseline format around that for digital video preservation.
This is also the basis of the 'DCP' format used for distribution to theatres with digital projectors, so there's simplicity in standardizing that for archival of finished films.
Of course JPEG 2000 and MXF both specification with gratis distribution, but I'm not aware of any patent restrictions on implementations.
-r
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