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Sony Vegas 3D Stereoscopic Render issue

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Dave EdwardsSony Vegas 3D Stereoscopic Render issue
by on Oct 28, 2011 at 10:06:58 am

Sony HDR TD10 3D files imported into Vegas 11 can be displayed on a passive LG monitor using the Line Alternate option and the camera displays properly when plugged directly into the monitor via HDMI.

The issue I have is in trying to render anything useful in Vegas.

Files rendered at 720 display but have to be positioned with pixel Y axis precision on the line alternate monitor to avoid moiré patterns. Maybe I have to live with this..

Files rendered at 1080 using various output options (.mts / .avi / .mxf..) produce double images, distortions.. it's a real mess.

What is more, for some reason the Vegas monitoring simply stops after some renders: black screens on both the main screen and the external 3G monitor wherever you position the cursor on the timeline: this looks like a Vegas bug.

I'm beginning to think that an active shutter system might have been a better bet but has anyone any thoughts how produce a coherent 1080 render?


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Boris StarostaRe: Sony Vegas 3D Stereoscopic Render issue
by on Nov 1, 2011 at 3:31:22 pm

I'm not a user of the LG passive monitor, nor of Vegas (yet. getting ready to). My experience is based on use of a Vizio passive 3dTV.

I have a question that might be of use, however. It sounds like you are trying to render a file that displays horizontal line alternate L and R views - i.e. that is already interlaced for display on the passive screen, which utilizes a horizontal line alternate polarizer. But wouldn't the monitor have an input mode like L and R side by side, that it would then interpret/convert and display correctly?

The reason I think this ought to be so: most stereoscopic content is currently distributed in a L / R side by side format. Wouldn't that be the format you'd want for your final render, anyway?

Looking forward myself, to learning the stereoscopic editing ropes, soon.

thanks,

Boris Starosta

-
Not all my photographs are answers. Some are Questions.
- Boris Starosta


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Dave EdwardsRe: Sony Vegas 3D Stereoscopic Render issue
by on Nov 1, 2011 at 6:28:10 pm

Hi Boris, - thanks for your comments, you're probably right about this and I shall run some trials.

I was under the impression that 3D BluRay worked with a different arrangement,- 'packed frames' (whatever they are)?

I've managed to solve my immediate issue by getting the output right and making use of Stereoscopic Player. I've burnt a BluRay disc using Sony Vegas which plays correctly on my Line Alternate monitor, although whether it would work on a 3D TV I'm unable to test.

I have to say that I don't feel very secure about any of this yet!


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Boris StarostaRe: Sony Vegas 3D Stereoscopic Render issue
by on Nov 1, 2011 at 7:10:34 pm

Dave,

I think you're right about 3d BluRay. That is not a simple side by side format. By "most content" I meant content produced and distributed by amateurs or independent artists (which is probably indeed more content by far than you can get on BluRay), via youtube or other internet options. (Which I am expecting to become more and more attractive as distribution channels).

A colleague of mine has recommended that when I start editing (on Vegas or whatever I end up with), I would do well to use the anaglyph output on a regular monitor for correcting alignment and stereo window and proofing depth budget. In anaglyph it's very easy to see the disparities. Later, the full color proofing can be done on a 3dTV - via a usb "sneakernet" connection, or via an HDMI cable connection, if your video card offers that. I've got a PC on order and am still researching the video card question (lots of GPUs are best, I'm told).

I will also be trying to connect the VIZIO 3dTV to the PC, and will report back my results in the next few weeks. This is why I stumbled into your thread, as well.

Thanks,

Boris Starosta
Stereoscopic Art & 3d Photography
-
Not all my photographs are answers. Some are Questions.


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Max BakerRe: Sony Vegas 3D Stereoscopic Render issue
by on Nov 17, 2011 at 1:38:46 pm

I've been burning 3D Blu-Ray disks and they come out great in the wide, side-by-side format, 1080i60. You can't render so that they automatically will play as 3D unless you use one of the top-end commercial rendering/burning programs (sorry, I forget their names). As far as I know, in all cases with Vegas Pro 10/11, you have to manually switch the TV to 3D and select the side-by-side option (or whichever format you're using), then play your 3D Blu-Ray disk (BD-R or BD-RE). I have a Samsung 3D-HDTV with shutter glasses. I'm amazed at how good the pictures come out in 3D. Biggest artistic challenge is where to set the convergence plane and adjusting the interaxial distance. Still playing with that. I would be interested to know if anyone is aware of reasonably inexpensive software that would burn 3D video on Blu-Ray disks so that it automatically loads up as 3D just like the commercial Blu-Ray movies. Good luck!

Max


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Matt FawRe: Sony Vegas 3D Stereoscopic Render issue
by on Dec 1, 2011 at 7:28:07 pm

I'm just starting to use Vegas to cut TD10 footage. So far I have only created side-by-side renders, for YouTube use.

Eventually, I will be cutting for Blu-Ray 3D output. I have learned some interesting theory about that, which may help you, but caveat that I have not yet used this theory yet.

1. Blu Ray only plays back in 24fps. Since the TD10 only shoots in 29.97 or 25 fps, it may not be the best camera to shoot an eventual Blu-Ray release. Dropping frames from 29.97 to 24 will likely cause motion artifacts. One work-around may be to shoot in PAL (25fps), and slow down the footage enough to play at 24fps.

2. Blu Ray uses "frame packing", sometimes called "frame packaging", which (as I understand it) is a side-by-side format that is actually twice as wide as a normal HD frame (3840X1080), so that the full resolution of each HD frame is kept.


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Dave EdwardsRe: Sony Vegas 3D Stereoscopic Render issue
by on Dec 2, 2011 at 5:35:52 am

Since making my earlier posts I have used Vegas 11 to produce 3D BluRay Disc images - which I burn to disc and which appear to work well on a domestic player with active glasses: picture quality is very good. My systems are PAL which may explain why I have not noticed motion artefacts, though perhaps I'm not looking hard enough!

My current problem is finding a way to produce menus on 3D BluRay discs: DVDA won't oblige and I'm not ready to take out a mortgage to buy BluPrint..


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