Ein unscheinbarer Hilferuf auf dem YouTube-Forum und die Antwort des Google-Mitarbeiters „YouTube Pete“ offenbarte am 17.07.2009 eine offensichtlich neue Funktion der Video-Plattform: den Stereobildmodus. Nutzer haben nunmehr die Möglichkeit, Videos in 3D-Vision einzustellen, wenn sie einige Einstellungsbesonderheiten beachten. Bei 3D-Videos werden zwei farbverschiedene Bildlagen übereinander projiziert und können mit einer 3D-Brille räumlich wahrgenommen werden. YouTube Pete’s Antwort im Original:
„I’m the developer working on the stereoscopic player as a 20% project. It’s currently very early, hence the silly bugs like swapping the eyes for the anaglyph modes. A fix for this is in the works. The current tags are provisional and may change or expand. They are:
yt3d:enable=true Enables the view mode. (obviously you’ve already discovered this)
yt3d:aspect=3:4 Sets the aspect of the encoded video.
yt3d:swap=true Swaps the left and right sources. You may need to add this to videos when the player with fixed anaglyph modes ships. Apologies for the inconvineince.
yt3d:left=0_0.1_0.5_0.9 and yt3d:right=0.5_0.1_1_0.9 These tags are very provisional and most useful for fixing up old videos. They set the source area for each eye as pairs of coordinates x1_y1_x2_y2. The scale of these coordinates is 0,0 for the the top left down to 1,1 for the bottom right.
Ideally you shouldn’t use left and right. For the best quality make the sources as large as possible within the frame and set yt3d:aspect correctly.
Your feedback and suggestions are welcome, but as this isn’t my primary project I can’t promise a speedy turnaround with improvements.
Thanks again for the videos!
Pete“
(JavaScript-Link: Pete’s Antwort).