Sean Meredith
Forum Replies Created
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Maybe people are having a hard time making HDLink LUTs that they’re happy with. I certainly have trouble making accurate ones using the HDLink utility.
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I hear a lot of people talk about LUTs for their HDLink, but it’d be great to see more people sharing their’s. Anyone have any LUTs for the Apple 23″ Cinema Display for Robin to try?
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I haven’t used them but I’ve heard this place is pretty good…
https://www.ivchd.com/I think they have a system that records to film at 1920×1080 which means you avoid that sample upsampling to 2K.
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Most of us use HDLink for economic reasons. Often we’re using them during editing when accurate color rendition is not critical. Still it leaves much to be desired. Does anyone have any LUTs they’ve created for their HDLink boxes and particular monitors like the Apple 23″ LCD? Would anyone care to post some of these on-line or email them for us to share and compare? I have a tweaked LUT in my HDLink box. It’s better than the default settings, but I’m sure it could be a lot better. I wish the HDLink controls mimicked the controls on a broadcast monitor (even if it can’t really mimick the color accuracy of a BVM monitor).
Sean Meredith
mailbox@cutterfilms.com -
I shot 720p 23.98 uncompressed 10bit 4:2:2 Varicam direct to disk. I have about 15 or so shots that need compositing. So, I uprezzed the clips to 1080p 23.98 Blackmagic 10bit RGB using After Effects and Algolith. I analyze the clips (23.98 1080p …everything is right). I watch the clip in Quicktime where a curtain rises. Everyframe has a change as the curtain rises. But when I make a new composition and drop that clip in AE things get weird. i compare the original composition with the rendered clip frame for frame. I counted 8 frames that repeated during one second of the rendered clip, but they still kept in time and matched up at the end of the second. Also, my uprezzed clips have a different icon. There’s a little set of RGB triangles in the bottom right hand corner of the quicktime icon. I assume that means it’s a BM 10bit RGB clip. Now here’s something I just discovered… One clip that I re-rendered it’s uprez at 23.976 states it’s speed in AE as being 23.976 and it’s the only clip that’s not repeating frames. Maybe I can make this clear up the problem, but that means another day of rendering the uprezz files and I’m running out of time. It’s quite disconcerting that Apple is so unspecific about 23.976, and AE makes a clear differenciation
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Yes. it’s 24fps timebase. I tried dragging the clip onto the new comp button. and it repeats at the same frames. one instance mysteriously resolved yesterday, but now it’s appeared again with a new clip. could there be a problem with using 23.98 as my frame rate. should it be 23.976? does AE see a difference between them?
-sean
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I’ve captured straight from the Varicam with the Decklink HD Pro card and FCP5 with no problems. But I haven’t used the AJA LH card. Just make sure you’re recording tape also, otherwise there won’t be any flags and the computer will capture the wrong frames.
-sean
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Exactly. Except there aren’t a couple bumps to fix, but instead a small continual bounce. I’ve been trying to manually fix it but it takes FOREVER and I’m not really able to get it close to right.
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I have this card. Once in a while my wife will put the computer to sleep after transfering files from my G5 or something. It wakes up fine. That’s not how it was when I first built the system. Don’t know why it wakes up safely now.
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It’s easy to compose for Standard Def TV (even with all it’s flaws) because we’re just so used to it. I’m wondering about action safe and title safe for all these consumer flat screen HD sets. Anybody have a general rule? 10% action safe for HD?
Sean Meredith
Dante’s Inferno
http://www.dantefilm.com