Hello Ruben A fine solution for two-track recordings on YouTube, so I hope you don't mind me adding: As long as you're at your desktop, where the fullscreen especially give you an "engage-like" experience. The mobile distribution of course suffers from the slides being too small to be legible, with too much real estate being given away to lecturers, I think. Plus, the black bars you create. But as Hank was saying, we'll encounter these for quite some time and unless you're willing (and technically capable) to drop video according to the distribution environment, this will probably best be solved by the user for the time being by choosing his/her favourite setting in the engage player.
Regards Olaf A. Von: [email protected] [mailto:[email protected]] Im Auftrag von Hank Magnuski Gesendet: Donnerstag, 3. Mai 2012 17:40 An: Matterhorn Users Betreff: Re: [Matterhorn-users] Side-By-Side Youtube Publishing Rubén, Thank you for this post and fine example of a two-screen composition. People in the Matterhorn community have been asking me "Why do the NCast Capture Agents do a single video track recording?" and I think your post illustrates the problem in that most media playback systems today can only handle a single video track. So the NCast units create such a composite video in the first place and through workflows at the server we split the original into two separate streams for Matterhorn processing (basically just the reverse procedure which you illustrated in your post). We have debated single-track vs. dual-track recording for many years, and our conclusion has been that single-track recordings are easier to deal with given current media players and technology. The good news is that this problem will only get worse in the future, as many, many classrooms are moving to hi-def and we are now facing the issues of recording two hi-def, 16:9 image streams, and compositing a 32:9 or a 16:18 video image for playback will simply not work. This new environment will surely force the issue of two track recording, and two-track players (as implemented in the Engage player) seem to me to be the only reasonable way to present the user with dual 16:9 playback. Hank p.s. Our PR-720-D hardware is capable of dual hi-def recordings. On Thu, May 3, 2012 at 7:15 AM, Rubén Pérez <[email protected]<mailto:[email protected]>> wrote: Dear all, We have been uploading video contents to Youtube as part of the campus of excellence "Campus do Mar" project. Even though all the media content is processed by Matterhorn, the publishing to Youtube is done via PuMuKIT, so we don't use the recently-finished workflow handler to publish in Youtube. As we wanted to give our Youtube viewers an experience as close as possible to watching the videos in the Engage player, we decided to make a composition with both streams side by side, so that the viewer can see the presentation AND the presenter at the same time. You can see some examples in http://www.youtube.com/user/CampusdoMar/videos?view=1 (any of the playlists starting with "2012"). The composition was made with a Python script using Gstreamer, adding all the elements (intro, overlays and side-by-side composition in a single go). I would like to start a discussion about the different approaches the adopters following to upload their recordings to iTunes and Youtube. Are you uploading single streams? Are you composing them somehow? Which technologies are you using? I hope we all can benefit from this share of knowledge. Best regards Rubén
_______________________________________________ Matterhorn-users mailing list [email protected] http://lists.opencastproject.org/mailman/listinfo/matterhorn-users
