Alpay Kasal
Forum Replies Created
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consider this… ntsc dv is 720×480, the hdv shot with my sony is 1440×1080 (rectangular aspect ratio produces the effective widescreen that 1920hd does). the hdv is 4.5x the pixel resolution! which basically means you can zoom in quite a bit. The numbers here say you can zoom in 450% and still be looking at DV res without scaling up at all, in practice it really feels like you’re zoomed way in there. It’s a pleasure.
Now consider that DV is plagued with probs when it comes to chromakeying, when you’re dealing with those problems at this high of a resolution, your artifacts get scaled down if SD is your final product (which is probably true for awhile). so keys and compositing look great.
please correct me if my numbers are off, I’m doing it from the top of my brain
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Ahh, I bet that’s the problem. I think Steve is on the money. I’ll stick that one in my “why didn’t I think of that first” folder 🙂
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Actually, I’m doing this right now…
I like to use pre-comps to keep myself organizized. for instance, I’ll set up an HD comp (I’m using a sony fx1) and work on my hdv clips at full res, also doing my chromakey work at this resolution (minimizing edge artifacts once it’s scaled to SD).
Then make an SD resolution comp, when the HD comp is dragged in to the SD parent comp, I scale it appropriately and voila! you can also perform some nifty pan and scan here, this is the main reason I bought this camera.
keep in mind that the left-right edges are offscreen when planning your shots.
Alpay Kasal
Artist/Engineer
https://www.NYCRenderfarm.com
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Marc Bauwens:
I am experiencing the same degradation in the preview and the firewire output. also, this is a new unpolluted machine, a 3.2ghz with a raid0 stripe of 10k drives which are basically blank. the clip plays fine until I stack another clip over it or do a simple razor cut.JamesH:
the playback is smooth, seems to be a full 30fps. it seems like edges are blocky in a very regular way… I thought it was interlace problems but I went through each of the field options and saw what i might expect from those. this is different, almost like I was looking at poor jpgs. however, clicking on a single frame in the timeline shows me a proper looking interlaced still on my ntsc monitor. I’ve used ‘enter’ as well as rendering out, the dv file looks degraded until I add some kind of effect to it as mentioned… i’m stumpedTimothy Kurkoski:
I do recall this problem from the 6.x days. I’m using prempro1.5, I’ll look at which DV codec prem is using when capturing video, I didn’t set it to anything funky so I’d assume it’s simply MS dv. Cineform is on the system, but thats there just for HDV captures. the part that gets me is how the clip is fine until I stack something on it.thanks for the help.
Alpay Kasal
Artist/Engineer
https://www.NYCRenderfarm.com
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need more info – most of the time though,if you’re experiencing this in a 3D project, try switching to the advanced 3d renderer in your comp setting.
Alpay Kasal
Artist/Engineer
https://www.NYCRenderfarm.com
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I thought I’d chime in here… I own an FX1 and I learned that while the 4:2:0 mpeg2 the camera writes to dv tape is not the best solution for chromakeying, the component video coming live from the camera is preferable since it is not compressed. food for thought, may be helpful depending on your situation. I can shoot where my computers are so for something like a “perfect” chromakey shot, this is great news for me.
Alpay Kasal
Artist/Engineer
https://www.NYCRenderfarm.com
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the only way I’ve accomplished this with a real pro look is by using realflow and a 3d package… check out https://www.smvisuals.com/boru/flow.mov to see an animation. I did the much bigger project in AE but resorted to Realflow and 3DSmax for this effect.
Alpay Kasal
Artist/Engineer
https://www.nycrenderfarm.com -
I’m a little confused about what you’re up to exactly, sounds like you’re putting green on the display, this would have helped me greatly in the past so I thought I’d offer this from experience…
I worked on a short film where there was camera motion and I corner pinned a bit of dv video onto the screen of an old television. I had to mask out the corners to match the curved shaped of the televisions bezel. as I look around my house, all my tv’s have a curved plastic bezel. I did not think of this initially and thought the effect would be super simple. the corner pinning worked fine but the curved masks were distorting a little with the handheld camera motion, I had to go in and fix stuff by hand. Just thought I’d share.
btw, i could not have used green or blue on the tv as it would have lit up the scene. i hope you can get away with that.
Alpay Kasal
Artist/Engineer
https://www.NYCRenderfarm.com -
That’s right, you’ll need to render to a sequence of frames (since it is assumed that networked computer will create frames out of order). The good news is that once you have used Network Rendering to number crunch your time intensive projects, it is super quick to make a simple project that creates the quicktime (or whatever) you want out of the frame sequence.
It’s a 2 step process but not at all painful.
Alpay Kasal
Artist/Engineer
https://www.NYCRenderfarm.com -
That was so frikkin’ hot…. inspirational stuff. I likey.
Alpay Kasal
Artist/Engineer
https://www.NYCRenderfarm.com