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Problem; Uncompressed 1080i HD Motion Graphics
Hi All-
I’d be curious to hear your opinions if anyone has experience creating motion graphics in an uncompressed 1080i environment.
We created an 8-minute uncompressed 1080i HD video for our client, which is very motion graphic heavy.
We mastered our uncompressed 1080i footage to a D5 deck; From there, our client tried to run the D5 deck into a JVC HD100 projector for a tradeshow presentation.
After testing, they found that our motion graphics have a lot of motion blur to them (anything that flys in on screen, or has fast motion).
There is also a lot of stagger to some product shots, as they grow/increase on screen. Similarly, some of our text is very jerky as well.
We have narrowed it down to 2 possibilities;
1. Our computer can not handle the master to D5 (We are running an 2×2 GHz Dual-Core intel mac, 3 GB 667 MHZ DDR2 FB-DIMM)
We have 10 layers of uncompressed HD motion graphics in FCP, trying to master back to D5;
2. Is it a motion graphic / HD issue; We created a lot of fast motion graphics and they look fine in FCP, however, projected on a HD LCD or a JVC projector, we get issues; We are thinking about numbing down the problem areas and make it less intensive.
Any advice? Thanks guys.
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20 Replies
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What program did you use to create these motion graphics? AE? Motion?
How did they look to you on your HD monitor before you handed them to the client?
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We created all the graphics in motion and imported the files into FCP. The graphics looked fine on our HD monitor.
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Actually, I take that back- the graphics in our HD monitor statement; Last 2 weeks have been fuzzy late nights.
We had a freelance editor in creating everything for us, and whenever it was time for a review, he would render out a uncompressed quicktime file and everything looked pristine and the client would sign off on that.
Normally, we always review on our JVC HD LCD; I believe there was some motion blur in the text when we viewed (after the facct) on the HD LCD. I still don’t understand why the uncompressed motion graphics would cause an issue though; Is it the motion lag on LCD’s?
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Firstly I assume you rendered before playout. Secondly the D5 playback on your HD monitors looked the same as straight off FCP.
Thirdly you are talking interlaced 29.97 Or 25, not progressive 23.98.
If all of the above is true, then what is the JVC projector doing? Is it deinterlacing on the fly? What is its refresh rate?
What does it look like on a different projector? My money is on the projector, not FCP. I play out Uncompressed HD from my G5 dual 2.5 to HDCam without any of those issues (1080 50i).
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Yes, we rendered before playout and it’s a 29.97 framerate. The HD monitors don’t have an SDI input which we usually run from the D5, so we downconvereted to an SD monitor and also had FCP ingest the mastered D5 tape back in to check it. We are a small agency w/ a small broadcast dept. so we don’t have everything we need at our disposable I suppose.
My money is on the projector too, but our client makes the projector 🙂 I am not sure how their engineers are working the D5 to Projector issue, all I know is it’s a 30,000:1 contrast ratio..
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One other thought – were the graphics interlaced or progressive? Again if it didn’t strobe on your monitors, then that might be a furphy.
I would try to run it on some other brand of projector like a Barco or Christie before you blame anything. A friendly local cinema might be able to oblige.
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I’d suppose it’s a interlace problem, since you are talking about 1080i.
No projector (other than tubes) can project interlaced, you’ll need to feed it progressive or it’ll de-interlace by itself (which can be good or bad, depending on their chip). Unfortunately you can’t lay down 1080p50 to tape, which would be the perfect solution (I’ve seen that projected straight from a computer, it’s awesome).
So, your best bet is 1080p24 or 25, but you’ll have to watch out for stuttering of fast motion because of lower temporal density, you may want some motion blur.
Regards,
Uli
Director of the Institute of Media Research (IMF) at Braunschweig University of Arts
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[Salerno] “My money is on the projector too, but our client makes the projector 🙂 I am not sure how their engineers are working the D5 to Projector issue, all I know is it’s a 30,000:1 contrast ratio..”
That’s where my money would be too. Unless it’s an extremely high end professional projector, you would have issues showing interlaced material on this. Contrast ratio does zero for interlacing.
I tried to do a search on the model number, but that’s a model number for their camera, not projector.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.All Things Apple Podcast! https://cowcast.creativecow.net/all_things_apple/index.html
Read my blog! https://blogs.creativecow.net/WalterBiscardi
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[walter biscardi] “That’s where my money would be too. Unless it’s an extremely high end professional projector, you would have issues showing interlaced material on this. Contrast ratio does zero for interlacing.”
Also, obviously the refresh rate of the projector comes into play here. It just may not be able to keep up with all the motion on the screen, like a cheap LCD display would shot a lot more motion blur than a high quality HD display.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.All Things Apple Podcast! https://cowcast.creativecow.net/all_things_apple/index.html
Read my blog! https://blogs.creativecow.net/WalterBiscardi
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I looked into the projector and it’s the JVC D-LA HD1; I believe it converts 1080i to 1080p on the fly; Our editor created all graphics interlaced as well. I wonder if it’s the 1080i to 1080p that is causing the stuttering / blur issues.
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