[gst-devel] Video 3D support

[Martin Bisson]

Thanks, I took a look a "Stereoscopic Player".  At the end of my 
project, I'd like to make a simple GTK example that would do something 
similar.

The way I see it, 2 "normal" video streams would be put together in one 
3D stream with the caps mentioned in the previous mail : side-by-side, 
bottom-top, row-interleaved.  That would be the way a 3D stream would 
make its way through the pipeline.  Then, a 3D stream could be output in 
a number of different formats like the ones available in Stereoscopic 
Player.  I figured that for simple "software" streams, like anaglyph, 
the caps could be those of a normal stream.

For the other formats, well first I don't have access to that kind of 
hardware...  There might be some head-mounted displays I could get a 
hand on at my university, but I'm not even sure.  Anyway, would we 
actually need caps for those streams?  I figured that the output formats 
related to a specific hardware would be part of a plugin.  For example, 
you would plug a normal 3D stream into the output plugin that could do 
what is needed for either NVidia 3D Vision, iZ3D or whatever.  If that's 
correct, there might be an option on the output plugin to set what type 
of output but no new caps would be needed.

Hope that makes sense,

Mart

bparker wrote:
> Yes, those would be the input formats, but what output formats will
> there be? There are many different ways to output 3D streams.
>
> Attached is a list from the windows "Stereoscopic Player" program
> (which is also bundled with nvidia glasses/zalman monitors and others)
> that shows what output formats it supports. This and the DepthQ player
> seem to be the most featureful and up to date programs that play back
> 3D videos.
>
> If you can't see the image, here is a shorter list of its output formats:
>
> Source (Plays back unaltered, for spanned dual projector or new model 3DTV)
> Monoscopic (Shows left or right eye of stereo stream only)
> Dual Screen Output
> NVIDIA Stereo Driver (3D Vision)
> StereoBright™
> Quad Buffered OpenGL (hardware page-flipping)
> Sharp 3D Display
> 3D Enabled DLP-TV (uses checkerboard format)
> iZ3D Monitor
> Tridelity SL Series 3D Displays
> SIS Attachment 4
> Side By Side
> Over/Under
> Row Interlaced
> Column Interlaced
> True Anaglyph Red - Blue
> True Anaglyph Red - Green
> Gray Anaglyph Red - Cyan
> Gray Anaglyph Yellow - Blue
> Gray Anaglyph Green - Magenta
> Half Color Anaglyph Red - Cyan
> Half Color Anaglyph Yellow - Blue
> Half Color Anaglyph Green - Magenta
> Color Anaglyph Red - Cyan
> Color Anaglyph Yellow - Blue
> Color Anaglyph Green - Magenta
> Optimized Anaglyph Red - Cyan
> Optimized Anaglyph Yellow - Blue
> Optimized Anaglyph Green - Magenta
>
> Dual projector setup (with polarized filters) or late-model LED 3DTV's
> (Samsung, Panasonic) do not require any special output method from
> gstreamer to view 3D, but:
>
> In order to have mainstream adoption of 3D playback with gstreamer, in
> my opinion, these are the most widely used output methods that need to
> be supported:
>
> Unaltered (like with the new LED 3DTV's, could also support automatic
> switching to 3D mode if using HDMI 1.4)
> Quad-Buffered OpenGL (supported on professional cards like Nvidia Quadro)
> Nvidia 3D Vision
> Horizontal Interlacing (Zalman monitor)
> 3D DLP TV (checkerboard)
> Anaglyph
>
> Also to support Autostereoscopic displays (lenticular or parallax
> barrier), a multi-view output method would be required.
> For example with lenticular displays, typically you output 8 or 9
> different camera angles, and for parallax, a lot of times you use a
> custom 3x3 grid made from a stereo stream to enable the multiple
> viewing angles.
>
> If you have any questions I would be glad to help.
>
> -bp
>
> 2010/05/23 19:00 "Martin Bisson" <martin.bisson at gmail.com>:
>
> bparker wrote:
>   
>> What output formats are you planning to support? What I would love to
>> see is m...
>>     
>
> For 3D streams, I plan to support side-by-side, top-bottom and
> horizontal interlaced.  Dave mentioned memory consecutive, which would
> be the same thing as top-bottom for non-planar formats.  I guess I could
> add it for planar formats, if needed...
>
> I also plan to add support for red/cyan and red/green image types.
>
> Mart
>
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