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  1. Member
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    Hi
    I have assembeled a 2 cmos ntsc camera system that generates a 3D field sequential signal by using the odd field of the left camera and the even field of the right cam.
    I want to record the signal on my XP PC. My capture software (Power VCRII) combines the 2 fields into frames and the 3D info is lost.
    Can you recommend a capture software that preserves the 3D info?
    I will be thankful for a free software.
    Regards
    Shpitz
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  2. VirtualDub maybe (it will preserve interlacing with YUY2 caps). What capture device are you using?
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  3. Member Cornucopia's Avatar
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    First off, I STRONGLY recommend that you DON'T use as your master an Interlaced signal.
    1. You're getting only 1/2 of the 2 camera's original quality
    2. You're going to get "strobing" effects on playback
    3. Display devices/media are NO LONGER Interlaced-only output.
    4. You're LOCKED IN to a somewhat antiquated format.

    Cap both of your cams simultaneously and combine them into side-by-side, dual-muxed streams, etc. and retain the FULL quality.

    If you need to EDIT via an old-school-compatible method, use StereoMovieMaker (or AVISynt, etc) to convert to interlaced, anaglyph, anamorphic side-by-side, etc. And then save your EDL so you can apply it to the master in full quality at a later date when your system is improved.

    But, if you can't or won't work that way...

    1. Make sure your camera is putting out both fields (check the specs)
    2. Make sure your cap hardware + drivers are capable of, and set up for, interlaced capping.
    3. Use ONLY codecs that support interlaced encoding (DV, for example). NOT ALL DO.
    4. Don't do any vertical blending, resizing, effects, etc. AFTER you've interlaced them.
    5. DON'T use a codec that blends lines in determining the U or V colorspace.
    6. You have to have End-to-End support for interlacing, so you'll need an interlaced output device (usually CRT), with the video drivers set for interlacing (tricky).

    See, it's more than just a choice of "capping application".

    Scott
    Last edited by Cornucopia; 26th Apr 2010 at 21:12. Reason: Didn't finish...
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  4. you can always capture the fields separately first onto your pc and then use a program like "stereo movie maker"

    http://stereo.jpn.org/eng

    to put the two fields back together again in it's proper field sequential format. Then again depending on your camera's output, running it into a dvd homedeck recorder should work as well
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  5. Member
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    Thanks to all for information and suggestions.
    Will try
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  6. Far too goddamn old now EddyH's Avatar
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    i hope this is only a hobbyist kind of thing, because the resolution and sheer flickerocity of that will make it poorly suited to professional use (400x240 or so effective rez, 30Hz flicker from the shutterglasses or whatever you use... or a reduced framerate with motion trailing effects if you combine it to anaglyph/twin-output polarised)

    but sounds like a very cool thing to play with! what kind of hardware have you based it off and can we get schematics?
    -= She sez there's ants in the carpet, dirty little monsters! =-
    Back after a long time away, mainly because I now need to start making up vidcapped DVDRs for work and I haven't a clue where to start any more!
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  7. Member
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    http://http://www.petesprojects.com/stereo-video/index.htm

    Yes EddyH; this is a hobbyist project of a retired engineer.
    My project is a simlified version of the project in the link above.
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  8. Originally Posted by shpitz View Post
    http://http://www.petesprojects.com/stereo-video/index.htm

    Yes EddyH; this is a hobbyist project of a retired engineer.
    My project is a simlified version of the project in the link above.
    I could not get your link to work, but a few years ago Razor3d sold a video camera adapter kit (I bought it) that hooks up to whatever video camera you have and records in the field sequential format. Worked pretty well (it's only downsides were you could not really use a wide angle lens and that it needed a lot of light)

    no longer sold, but here is the link for it
    http://www.razor3donline.com/nuview.html
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  9. Originally Posted by mazinz View Post
    I could not get your link to work
    http://www.petesprojects.com/stereo-video/index.htm
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  10. Originally Posted by jagabo View Post
    Originally Posted by mazinz View Post
    I could not get your link to work
    http://www.petesprojects.com/stereo-video/index.htm
    Thanks! I just noticed the original link had the double http in it.
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  11. Member
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    Mazinz
    I know about the NewView adapter. It is being sold now by i-glasses.com
    its generates the same field sequential signal an I believe withe the same PC recording problems.
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  12. Originally Posted by shpitz View Post
    Mazinz
    I know about the NewView adapter. It is being sold now by i-glasses.com
    its generates the same field sequential signal an I believe withe the same PC recording problems.
    Thanks for the tip with i-glasses.com

    I will be honest in that the device came after I stopped using a PC capture card (I use the jvc drm100s homedeck dvd recorder and previous to that i used a Panny deck) so I never tested it that way. However running my camera from what I recorded with the Nu-view into any dvd recorder deck I did try, it recorded the signal in the field sequential format. Still in order to see the 3d, I would have to run the video through one of the boxes razor3d used to sell, which is what the glasses plugged into


    so if you just really want to preserve your 3d capture on disc, try a dvd homedeck recorder, if the device you made has one general video output
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  13. Member
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    Thanks for the tip Mazins
    Will try the dvd stand alone recorder.
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  14. Hello,

    I am trying to come up with a solution to stream signal to the new Sony HMZ T1 through the use of two cameras for an RC FPV system. There exists a 3D camera for FPV, but it renders in field-sequential which, I believe, is not a supported format for HDMI 1.4, which the Sony runs on. See here:
    http://www.nghobbies.com/cart/datasheet/3D-Cam%20FPV%20Manual.pdf

    I could do a side by side setup, but I'm not sure how to convert an analog signal to work with 1.4.

    Any assistance is appreciated.

    Thanks,

    Matt
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  15. Member Cornucopia's Avatar
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    Couple of things to mention:

    1. You should have started a new thread instead of hijacking this older one.
    2. You do realize that the FVP mentioned is really your weakest link - BY FAR. Analog, NTSC only (525 total, 480 usable active lines), No brightness, focus, zoom adjustment, no IAD or Convergence adjustment for Stereo3d, who knows how good the lens and chip are...There are much better current alternatives (even Fuji Finepix W1 or Sony Bloggie 3D are better).
    3.What do you actually mean by "stream"? Do you just want the cams connected directly to a PC box which is connected directly to the HMD? or do you want the output of the cams to be streamed over the internet to be received by PC box(es) which connect to the HMD(s)? BIG, BIG difference in setup there.
    A. If the former, a combination of interlace-capable Capture card + Stereoscopic Player + nVidia 3DVision capable video card (w/ HDMI 1.4 output) should do the trick. SP would do the realtime interlace-to-HDMI 1.4 conversion (whether FramePacked, TnB, or SbS, depending upon what the HMD likes).
    B. If the latter, you'll have to further describe your setup needs for any further/more helpful suggestions(although Enosoft's DV Processor could be interestingly utilized on a LAN!).
    Scott
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