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Posts: 268
Very large video as texture
Started by Holly Wetcircuit a while ago

Spent yesterday working on some logo/branding videos for my club. I made a video texture of the paint splatters, but it was extremely large 2560 x 2560px. The original video was about 1min and even compressed as Apple's Intermediate Codec (which is MPEG2-based constant bitrate, I believe) the video file is over 8GB.... That's just the *texture* I wanted to use in Carrara.
 {#emotions_dlg.dazed}
So I am more or less interpretting some ideas from our in-house decor, some of our print work this month has this paint splatter worked into our logo (which is the cherry symbol). I had a vague idea that I wanted our logo floating over a backdrop and it would all have the paint splatter texture on it, but I wasn't exactly sure what would be the best way to do it. The texture itself was so large and unweildy that I didn't necessarily want to prep multiple versions - okay, I was feeling lazy and wanted to do it all in Carrara.... I knew the texture would scale differently on my logo (created from a custom font, so the symbol you are seeing is actually a Carrara text object) than the plane behind it. This was what I was trying to avoid, so laziness got me to experiment a little....

I had the idea I would use the texture as a light gel. This sort of worked, certainly the plane and logo had the same scale of texture on it, but I quickly discovered I would need a better drop shadow to distinguish the logo. I was pretty happy to see that such a huge video texture could be loaded as a light gel though. A lot of my job is done with video projectors, and I've always wanted to create some models that represent my real life visuals to create my work on 3D virtual sets, props, test renders, pre-viz, etc

Anyhoo, I had to put the video into the shader room which worked fine. Yadayada a few tests later I ended up using SHADER OPS RealUV to scale a second version of the shader for the logo. Had some issues with pixelating though, so I am not sure if that was the plugin or if I was just misjudging my scale for the second shader (you can see there isn't much scale, some blops of paint are large, some very small).... 

I'm using a new computer now, a Mac Pro (the black cylinder) but I haven't been able to offord the RAM for it Money mouth. However, even underpowered it has been remarkable at handling large scale videos like my paint splatter texture... What I wasn't sure of is whether Carrara would be up for it.... I was trying to render out HD - and here was my mistake.

Going against my own advice I thought I would try to render to Apple Intermediate Codec (the one I said above is MPEG2). This turned out to be a disaster. After about 10frames, Carrara puttered to a halt, the 32bit QT thing also puttered to a halt, I lost all control of the computer, and wasn't even able to force quit as the computer was so tied up with 2 ginormous AIC files at once.... After several reboots it just wasn't gonna happen.

So I streamlined my original texture video into a PNG seq (and trimmed it to just a few seconds longer than my animation). Also eventually had to render to PNG sequence (thus avoiding the 32bit QT thing).... Carrara cranked through this very easily. My video uses the "motion camera" scene files here on Cafe Downloads. Once I stopped being stubborn about my laziness with the video files, and just accepted the fact that PNG sequence was an easier workload, everything was fine.

 


visit me at 3D.wetcircuit.com
Posts: 151
booksbydavid replied a while ago...

I was reading and thinking, "She needs to render out a png sequence." By the time I'd decided to send that message I read that you finally decided to do that. heh, heh

Great minds, right?

Holly Wetcircuit commented a while ago
LOLOL

Posts: 268
Holly Wetcircuit replied a while ago...

PNG seq had always been a problem for me in that my computers couldn't handle the bandwidth to PLAY them - it was essentially a necessary but blind step, an interchange format between compressions, but of no use really to view, so I resented it. LOL

New computer can actually play the PNG seq as if it's a normal (compressed) video, so that's really a big deal for me. A lot of newer programs (like CrazyTalk) can't render to Animation codec. PNG sec is the only way to get alpha channel video.... Looks like it's time for me to re-examine a lot of my assumptions and workflow...

visit me at 3D.wetcircuit.com

Posts: 151
booksbydavid replied a while ago...

Change is hard.  


Posts: 268
Holly Wetcircuit replied a while ago...

Here's the final video in QT...

visit me at 3D.wetcircuit.com
chrisd commented a while ago
Love that shakeycam effect.

Posts: 151
booksbydavid replied a while ago...

Like it. Like the camera movement.

Cool!


Posts: 268
Holly Wetcircuit replied a while ago...

Camera movement files are here: http://carraracafe.com/tutorials/carrara-camera-shake/

Makes me re-think how to use a camera entirely.... The scene files use tweeners on parented groups because you can't put the modifiers directly on a camera.

I poked around in Carrara last night trying to figure out if there's maybe a better way since you can't "just" load a shakeycam from the browser, you also have to adjust keyframes and then "window in" to several different modifier windows (etc)... Maybe an ERC thing that could control multiple aspects? My dream would be to give the Camera an "eye" - like a helper object that tells the camera where to focus, while some behaviors or NLA loop or something works out the camera shake automagically....

visit me at 3D.wetcircuit.com
chrisd commented a while ago
That would be Awesome.

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