Oliver Peters
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Forum Replies Created
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[chris] “Thanks Micheal! No such thing as 1080i huh? Tell that to my silly FCP settings. I double checked. 1080i. yeap makes no sence to me either.”
Make sure you are loading a preset and not building your own settings.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
[weevie833] “Secondly, December 31, 2006 will be the last day where broadcasters can use analog over-the-air transmission.”
Steve,
This is incorrect. The latest bills going through Congress set a hard cut-off as either Q1 or Q2 of 2009 if the legislation passes (note that this is AFTER the 2008 elections). There was always a market-penetration loophole in the 2006 date. The newly proposed date has no loopholes.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
[jeff] “I did finally figure out some settings that worked using compressor and it looks pretty good!”
Why Compressor? You should be able to cut in an HD timeline (turn Io view off) and then drop the sequence into an SD sequence. Turn Io back on, tweak CC, render and output to tape. All in FCP.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
The real answer is that spots will be HD when you have enough critical mass of CEOs who own HDTV TV sets. Then they’ll ask their agencies why their spots look awful when the programming looks good – or worse – when a competitor’s HD spots look so much better.
That will happen first on the network level and eventually on the local level. In my market (Orlando), as far as I know, only the ABC affiliate owns HD gear in the production department. For know this is an island to test the waters as they move into HD. Quite seriously, they are working on HD news promos, but also HD local car dealer spots.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
[BRussell] “In regards to HDCAM being not uncompressed (yes, isn’t it some kind of weird 3:1:1 at 135Mb/sec on tape?), but when you suck it out SDI, what’s written to disk is uncompressed. Wouldn’t then the post of this uncompressed stream, as media on harddrives, be lossless compared to DNxHD?”
Numbers are funny things. The general concensus is that HDCAM is about 7:1 compressed based on the prefiltering. That has nothing to do with the 3:1:1 figure, which is the equivalent colorspace compared to 4:2:2. This is simply a ratio and Sony prefers to use the ratio of 22:8:8, while others say 3:1:1. All this means is that for every color-difference sample (:1) the luma is sampled 3 times (3:). In addition the codec is non-square (internal to camera and tape deck) with only 1440 horizontal samples versus the format’s 1920. Yes, when you go out of the deck via HD-SDI, the deck’s decoders are decompressing the signal back to full bandwidth HD.
When it gets into post, the codecs used will at the least have to not harm the image any more than the original codec. So theoretically uncompressed is better, but many codecs are visually or mathematically lossless. If you edited in a Sony linear bay for example, you would be going through multiple passes through the HDCAM codec as you do pre-read and other generation-adding edits. If you edit in an NLE, your choices are uncompressed or various codecs. In this case DNxHD stacks up quite nicely.
It all depends on what you are doing to the picture in post. The worst are keys and color-correction. Chromakeys are not that great with HDCAM, since the codec is pretty noisey to start with. That’s why a lot of effects work has moved to HDCAM-SR or even recording straight out of the camera head uncompressed to a hard drive array. Color-correction really taxes a codec, especially when you stretch gammas, increase color saturation, etc.
There’s certainly nothing wrong with uncompressed, but DNxHD is a good trade-off in quality and drive comsumption.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
[BRussell] “Wow, so DNxHD is *better* than uncompressed standard HDCAM?”
HDCAM is NOT uncompressed. In fact it is HIGHLY compressed as well as prefiltered (high-frequency visual data is filtered out) before compression. So yes, in post, DNxHD (and other codecs, too) can achieve better results. Avid numbers their resolutions in various ways and not all DNxHD codecs are available on all of their HD-capable system. Here’s a link to their DNxHD whitepaper:
https://www.avid.com/resources/whitepapers/DNxHDWP3.pdf?featureID=882&marketID=
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
[grinner] “It seems to like to crash once a day so far but I don’t have to reboot or anything, just relaunch and it’s back. It feels much like a version one software to me right now. I hope it’s just new box/user syndrome that’ll iron out with more use”
Grin,
It seems like the system has a tendancy to loose communications with the Adrenaline BOB. I think this is a common issue with FW devices. I’ve seen the same thing with Avid Mojo and AJA Io, though Io appears a bit more stable. The bad part is that you can’t run the MC app without Adrenaline like you can run Xpress Pro without Mojo. A shame, since that would make the interface much zippier.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
Use DNxHD at the 220 rate. This will be far better than HDCAM. Master back to HDCAM-SR or HD-D5 for film-out. You should be fine on a film-out.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
[grinner] “Today was my first in-session day with my new Adrenaline, having just come from a very old symphony v3.1. So far, I consider it a lateral move. There are many things that are better about it but just as many that leave you scratchin your head wondering how sombody in Tewks still has a job.”
Hey! Where’s that morning-after “glow”?
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com -
[grinner] “Considering the system I traded in, I don’t think I’ll be displeased with speed on the Adrenaline in HQ mode.”
Grin,
I don’t mean speed in the HQ render mode, rather overall system responsiveness with the HD card installed, even in things like digitizing SD footage. You said it was an MCA HD, so I presume that includes the DNxHD I/O card, right.
Sincerely,
OliverOliver Peters
Post-Production & Interactive Media
Orlando, FL
http://www.oliverpeters.com