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ProRes HQ
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[Rob Grauert] “HQ is necessary for 10-bit codecs because they are, well 10-bit and higher quality. The HQ version allows you to maintain that quality, but with a more manageable file. “
Rob.
all 5 versions of ProRes are all 10bit codecs, just differing compressions ratios if you read the apple white paper on this it actually explains a great dealProRes 4444-{330 Mbps} is best when you need every single pixel OR when you need to maintain alpha channels, the most common usage for most people will be for Motion Graphics w/ alpha
ProRes HQ {220 Mbps} is at its best when your original content is captured at the camera 10bits or Higher, and remember that the vast majority of cameras record content as 8bit, HQ needs more CPU and drive speed than
“standard” ProRes {145 Mbps} allows you the benefit of being 10bit without the processing overhead required by the HQ codec and is really designed as THE workhorse version of the format that gives users the highest quality recording and playback from 8 bit content such as P2, SxS, HDV and even HDCam originals.
I am currently working on a disc for the Creative Cow Master Series on the ins and outs of ProRes for release later this year.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, ILhttps://blogs.creativecow.net/24640
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php
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Thanks Gary,
Everything you have mentioned I have understood for a while. I think I was just confused because I thought there was more to it since a lot of people seemed to have been confused at least at one point in time.
Thanks again!
Robert J. Grauert, Jr.
http://www.robgrauert.com -
[Rob Grauert] “I think I was just confused because I thought there was more to it since a lot of people seemed to have been confused at least at one point in time.”
There has been quite a bit of bad information posted about ProRes on this and many other forums too from people who “know.” When in doubt about ProRes, simply look up Gary’s name as he has the best knowledge about the codec and how to work with of anyone I know.
In fact, he’s really one of the most knowledgeable guys about production period.
Walter Biscardi, Jr.
Editor, Colorist, Director, Writer, Consultant, Author.
HD Post and Production
Biscardi Creative Media“Foul Water, Fiery Serpent” now in Post.
Creative Cow Forum Host:
Apple Final Cut Pro, Apple Motion, Apple Color, AJA Kona, Business & Marketing, Maxx Digital. -
Walter,
What is necessary is to read properly, instead of repeating like a parrot something that nobody have said.
Great that Gary chime in.
I haven’t read nowhere Gary even mention “2K”. So I don’t know why people say that Gary say anything about using HQ only for 2K.
I understand that Gary say that Prores is a codec with some caveats and in certain processes (processing 8b footage in software) there is not advantage of using HQ.
I’ve been through the pages of Gary a dozen of times and I agree with his observations. Is a pity that people make a wrong reading and extract false conclusions, putting in the mouth of Gary things that he never said.
The problem is simple: 99% of the people working with digital video have no idea of what they are dealing with. Ask around what a “VBS” is.
Cheers,
rafael -
Rafael,
I’m not sure who you are referring too, but I asked the question because I really had read that about ProRes HQ, and wanted to learn the truth instead of just blindly using the codec thinking I was using the best. But I have been in the business for 29 years, starting off as a Broadcast engineer using 3/4′ and Quad machines and moving through 1″ D-2 Digibeta etc…. If I ever stop learning, it will be time for me to get out of the business. Now we will all have to learn how to do 3d or be left behind. By the way VBS is referring to Video Blanking and Syncs or Composite video. May It Rest In Peace.
Maybe you weren’t referring to me, and I’m being oversensitive, but I believe the question was relevant, and appropriate for this forum.
Don WalkerJohn 3:16
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Not at all Don, I wasn’t referring to you. You did the correct thing: Asked when you didn’t now.
Your question was very relevant in this moment and a good opportunity to put few things at clears.
I talk about people that say “Gary said..” without having read his papers or having understand them.[Don Walker] “. By the way VBS is referring to Video Blanking and Syncs or Composite video. May It Rest In Peace. “
Or Video Base Signal, what is more or less the same.
This is the bigger mistake Don.
Analog video isn’t dead and never will be dead. Digital HD is built on the fundaments of the NTSC and PAl, and those built on top of the old B&W TV. We are working with the very same “raw material”.
Don, I don’t mean that is necessary to go back to the NTSC and learn everything, all the timing, sync, etc, but without a deep understanding HOW and WHY we go from RGB to Y’CbCr we will be limited to play with buttons and talk about what we do not know.
Cheers,
rafael
PS: Steam machines are not used any more, but sure that that is the first thing they learnt the guys that design the engines of the Shuttle or the Apollo. -
[Rafael Amador] “I haven’t read nowhere Gary even mention “2K”. So I don’t know why people say that Gary say anything about using HQ only for 2K. “
Rafael, if you read my reply, I explained exactly why people with a knowledge of the cameras I refer to, and assume that I am only referring to 2K and larger since those are the only cameras capable of recording a signal at greater than 10bits. For the Record Walter is not the only person to make that assumption either, and for the record THE RESPONSE IS TECHNICALLY CORRECT.
[Rafael Amador] “What is necessary is to read properly, instead of repeating like a parrot something that nobody have said. “
And That is about enough of that.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, ILhttps://blogs.creativecow.net/24640
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php
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Gary,
This isn’t relevant to the present discussion of ProRes, but I thought I’d mention it anyway.
At the bottom of your mail there’s link called
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php
This takes you to this page…
https://forums.creativecow.net/thread/8/Inside%20look%20at%20the%20IoHD
Which says the post has been deactivated.
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Neil Sadwelkar
neilsadwelkar.blogspot.com
twitter: fcpguru
FCP Editor, Edit systems consultant
Mumbai India -
Hi Gary,
I started learning Video with the Laws of Grassmann and Digital with Nyquist’s Theorem.
I’m used to the scientific thinking and the empiric knowledge.
Editing is a creativity; the only limit is the imagination.
Digital Video is a technology and a science; No room for funny theories and baseless conclusions.
Cheers,
rafael
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