Where Constant Quality Matters: See The Difference
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- เผยแพร่เมื่อ 22 ธ.ค. 2024
- In this tutorial I discuss why constant quality for BRAW could be the go-to file format on Blackmagic cameras. It's more than just moving images that determine when this setting should be chosen.
Great! A rare example of proper explanation. It's unbelievable how almost all misunderstood what quality setting on codecs are doing, trying to "see" some difference in "details" on unmanipulated material. A single mean on those setting is about how much information are stored for potential recovering in postproduction. Kind a how much amplitude of changes you predict to be needed later on. Similar with for example changing exposure on Jpeg vs Raw. That is it.
I see same misconception among photographers trying to saw difference between 24bit and 8bit. It is a elementary fundamental knowledge some should understand on how digital domain operates no matter is it photo, video or sound. It is same for everything.
Thank you! For me it comes down to when do I need the higher quality vs the standard bitrate. I tend to go with the higher-quality because sometimes it’s too late to realize you should’ve used that.
I recently commented on another video of yours. The footage in this video (specifically the interview shot with the lady) is *way* better - night and day!
Thanks! The footage in this is from jobs I did that mostly had a lighting set up. In the other video it was more of a run-and -gun set up to capture footage at various bit rates: cheers!
Hi great video. I shoot q0 for the dynamic range. I agree if you are not doing heavy grading or not shooting in a situation where there is drastic contrast that may require artistic flexibility much later down the pipeline - it’s going to be overkill. For a static shot - zero different until you look at the amount of stops under and over of dynamic range captured. Awesome video!!!
Thank you! I also think steering away from 12:1 in most cases is best. 8:1 and 5:1 do the job but I’m really impressed with Q0 and even Q1. Thanks again.
Hi,
Q3 is a good compromise I almost newer shoot Q0...nowdays with SSD prices so loe you can shoot Q0 for long format without a problem.
Interview I would usaly shoot Q5 exept if the backgroud is busy or a window...outside stuff with trees mouvements sky I would gonfor Q3,Q1 . Constsnt bitrate is not for me actually...
I think this is a solid approach. Unfortunately, one of the card types on my BMPCC 6k Pro is a CFAST, which is very expensive. But the SSD at 1TB will hold most of what I need. I think the lesson for me is to stay away from 12:1 and start using CQ. Thank you.
@@mattspadesoundandvision even Q5 is fine I use 12:1 if my SSD is broken and I have always a SD V30 250 GB card in it so it is working 12:1
Sorry V30 works with P4K for P6K you must have V60 for regular 24,25,30 fps...Cfast are crazy expensive it is why I use an adapter Cfast type 2 to Computer SSD (not nvme 2 but the older one)
(my USB C port is down in the P6K)
@@filipmichalsaffray441 You are right about the CFAST being crazy expensive. I have a 250gb that costs me almost $200 but I also use the T5 SSD (I have a cage mohnt for it) which holds 1TB. For my applications I've started clear of using the SD slots. Had an issue where it would only record a minute at time but I certain that was the card speed.
@@mattspadesoundandvision V60 is good as backup...512 gb V60 sabrent cost around 100€
what media storage do you use to record constant quality. help me please
I use the Samsung T7 portable SSD. This link is for the 4TB version.
amzn.to/49KSi5n
@@mattspadesoundandvision Thank you
thank you good lesson
Thank you for your kind words!
With the cost of external ssd I shoot q0
Since I can now shoot on CFExpress with full frame, same! I think I went as low as Q1 to allow enough time.
BRAW is not actually RAW. It's partially debayared in camera to speed up the editing. Problem is all compressed video codecs like AVC, H.264/265 and ProRes are all debayered in camera. For an image to be truly RAW the camera cannot delayer it. It just needs to convert the sensors Analog signal into digital numerical values and store those.
So basically Blackmagic RAW is just over glorified Prores 4444 with partial delayering. It's not true RAW
Very true and I discuss this in another video:
th-cam.com/video/hzoFwZaarPs/w-d-xo.html
My Production 4k does Cinema DNG, which is true RAW. Resolve will playback the DNG container folder as a file unlike other NLEs but it's heavy on the processing. I find the Production 4k Prores to be much better in most cases. At least with Constant Quality, especially at Q0 you get less compression, closer to DNG and I'd have to say much better than ProRes 4444. Then again, most of us aren't shooting at the highest Constant Quality. Thank you!
@@mattspadesoundandvision That's crazy. Yes BRAW is faster but my computer does play CDNG files fast even though my GPU is really weak. I'm starting to think that CDNG playback speed has a lot to do with SSD speed and RAM memory.