Would it be possible to make a 3dtv preamp for 60hz hdtv sets?

[yoda313]

Ok this is an odd question. The other day I was clicking through my cables on demand offering and just for the hell of it I selected the free 3d offerings. When it popped on there were two images - one on the top and one on the bottom. I was surprised it showed anything at all (it was a hd dvr connected via hdmi with hdcp).

That got me to wondering - would it be possible to make a preamp converter to presqueeze the images for 3d on the tv prior to displaying the 3d stuff?

I'm sure the quality wouldn't be anywhere near what a "true" 3d set would be. And with the prices dropping all the time I'm sure any such adapter, if possible, would probably cost a 1/3rd or half of what a real 3d set would. I'm just curious if this would be technically possible.

Or am I not understanding the technology? Does that mean that it can only be done "inside" the set itself and not with any outside push?

[jagabo]

To see 3D you have to show different images to each eye. A standard 2D HDTV has no provision for doing that.

In theory you could take the stacked left/right images, separate them, send them to the TV as an interlaced picture, then get some LCD shutter glasses that can sync to the the TV's refresh rate. If the TV's internal processing doesn't mess up the fields, and the LCD cells switch fast enough, you would then see a flickery 3d picture (30 Hz to each eye is very flickery). But not all 3d packaging uses stacked images like that.

[yoda313]

Thanks for the info jagabo.

[mazinz]

though it is payware, the app Stereoscopic Player can convert virtually any 3d format to another on the fly. Bym e, Time Warner Cable offers 3d and I recorded some of it (this was side by side however). I played the dvd I made through the app and it converted properly over to an anaglyph for me and it looked amazing (I do have field sequential equipment but not on the PC)

[yoda313]

converted properly over to an anaglyph for me and it looked amazing

Thanks for posting.

Is anaglyph the "new" version of the red and green glasses 3d of ye olden days?

I believe I saw that option in multiavchd but I don't have any sources in 3d to work with.

[jagabo]

Is anaglyph the "new" version of the red and green glasses 3d of ye olden days?

No. It is the red/green (or red/cyan) of the old days.

[mazinz]

I chose the anaglyph route because on my pc I have no field squential or other 3d video cards. If I truly wanted to convert it to such format, I would then really have to do some crop/resize and split the side by side videos into two separate video clips and go from there. Anaglyph (yes as Jagabo mentioned is the old method) is the most common way of viewing 3d on any format without the need for expensive glasses or equipment

another payware 3d app that WILL do all (can transfer/convert 3d from one format to another) of that work for you and output an avi/mpeg would be 3dcombine

[jagabo]

I wrote a 3d anaglyph script for someone a while back. It should be around here (videohelp) somewhere.

[Lady Colour]

you can't do that...