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Fitting image to width of monitor (Stereoscopic)

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Bram Tulloch
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We are attempting to use a 3DTV for basic stereoscopic playback using RV.

This TV accepts Side-by-Side and Over-Under.

Our issue is that some of our material is full 2k (2048x1556) and there doesn't seem to be an easy way to fit the width of the TV screen. RV always attempts to fit all of the 1556pixel height to the 1080pixel height of the display.

We are wanting to use the "Horizontal Squeezed" set up and then switch the TV into side-by-side and review shots, but when we do this to a 2K image, it doesn't fit the resulting "Horizontal Squeezed" image to the 1920x1080 of the display, which we need to get the correct disparity between the 2 eyes.

We can manually "zoom" the shot in to get it in the ballpark (and perhaps we could work out the math and set this up via the command line) but it would be great to have the ability to "fit width" no matter what the dimensions of the material we're working with.

When setting up "vertical squeezed" stereo display, this works, but the result is only centered on the screen and it doesn't use the full width of the 1920 display.

The other option I guess we have is that we output an already cropped image (e.g. 2048x1080) which would hopefully fit the height of the display and avoid this problem, but there's no guarantee that we will be able to do this. (i.e. we may need the full 1556 height).

Any ideas or solutions would be great.

I hope I've explained this well enough!

Thanks

Bram

 

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    Alan Trombla

    Hi Bram,

    First, I have a feeling this might require a lot of back and forth, so it might be best to handle with a suppor ticket.  We can post the results here.  If you'd like to do that, just mail support@tweaksoftware.zendesk.com.

    To make sure we're talking about the same thing:

    • you have rv in full-screen mode
    • you're not displaying the timeline, or you're displaying it "over" the media
    • the 2048x1556 images are not anamorphic (have pixel aspect = 1)

    Correct ?

    About the hoizontally squeezed mode, you say:

    it doesn't fit the resulting "Horizontal Squeezed" image to the 1920x1080 of the display, which we need to get the correct disparity between the 2 eyes.

    Can you say more exactly what you mean by "doesn't fit" ?  A 2048x1556 image (aspect = 1.3) is "too tall" for a 1920x1080 display (aspect = 1.78), so a "frame" or "fit" in RV will align the top and bottom edges of the image with that of the screen, and there'll be space on the left/right.

    Is that not happening for you ?  Or is that not what you want ?

    If you want a fit/frame of his size image to fill the screen horizontally and allow top/bottom of the image to go off screen, you can set rv's idea of the "display window" with the -uncrop command-line arg.  Here's a command that will frame a stereo full-app source (2048x1556) as if it were "center-cropped" to an HD aspect (2048x1152), but the "cropped" pixels are still there if you zoom out:

    rv [ left.dpx right.dpx -uncrop 2048 1152 0 -202 ] -stereo hsqueezed -fullscreen

    Hope that helps,

    Alan

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