MangoZoom

Here are frame grabs of a video clip, shot in Flog REC2020 (original) and then the transformed REC709 version.

This one did not use NR01=1, but I will be using that in all future videos. Yes, linear 16x9 is a crop, but GoPro claims it is using some oversampling and it is a crop from 5.3K so there is not the loss of detail one might expect.

I've just saw this video that shows very well what's going on with these settings.
Enable English subtitles and then it's straightforward.
NR01=1 effectively improve the image details but you are forced to use a denoiser (he uses Resolve temporal denoiser).
LOGB=400 doesn't add any improvement.
Just jump to 1'42"
 
 

I think it's a huuuuuge bug 🙂
This is the explanation:
LOGB=logbase,offset - Super experimental, alter the log encoding for more dynamic range, or for a closer match with other camera’s log curves. i.e design your own flat profile. Ideal for use with 10-bit, and the existing flat color setting.
e.g. oMLOGB=400 for a little push in dynamic range or oMLOGB=200,-128 for a crude Fuji F-Log emulation.
Note: As the pixel size isn’t changing, that increasing the logbase (flatness) may not significantly increase the dynamic range.
You could try to enter it manually
 

I'm realizing the app is very buggy.
The log option should be oMLOGB and the app puts oMLOGO 

Just installed and tried on my GP11 Back and it works.
I used QRControl app to myphone.
The code itself is !MBITR=[value]
The value you choose can be from 2 to 200 (note, anything lower than 100 DECREASES quality and file size).
So, if you wanted to increase the bitrate to 150 mbits/s, the code would be !MBITR=150
If you use the QRControl app, just slide the top menu to "Extras" and then use the drop-down menu to select BITR.
You can choose to make the change permanent (until you change it) or leave it on the default. If you don't make it permanent, the camera will revert back to the default once you turn it off.
Reading here https://gopro.github.io/labs/control/extensions/
Log, bitrate and noise reduction should be used together. I tried 
oMNR01=10oMBITR=200oMLOGO="400"
Just copy and paste in the "add command" text area in the QRControl app or just select your preferred values form Extras menu and it will add the correct controls for you.
I got a 180Mb file flat color profile but very noisy. Maybe oMNR01=10 is too low. I think that for my use I will just increase the bitrate.
NR01=x - Noise Reduction control, which should be combined with the LOGB control. e.g. oMNR01=50 range 1-100, 100 being 100% active (default), so 1 is the noisest. When pushing the dynamic range of any camera, shadow details may be suppress by noise reduction. Increasing the logbase will enhance the shadows, but will also reveal noise reduction artifacts tuned for a different encoding curve (the more consumer friendly Rec709.)
You can back-off the noise reduction to restore shadow details, with the downside being a noiser image (protentially requiring noise reduction in post.)
Also a noiser image will need a higher-bitrate to store the additional information (so BITR, NR01 and LOGB are all related.)

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On Gitub a page with features and model compatibilty:
https://github.com/gopro/labs
 

I don't know. 
I experimented with labs in the past with a GP8.
Now I have a GP 11 and i would like to test these mod. I'll try later. 
Reading that page it seems that a GP11 balck shoud have all options. Did you load the latest labs fw?

Thank you, Davide DB.
Unfortunately, when I point my GoPro to the QR code, I get the message "QRCode non-GoPro".
Can it be that some codes only work with certain GoPro models like the 11 Mini ?
 

Latest lab codes are here but it's really a mess
https://gopro.github.io/labs/control/extensions/
I guess BITR LOGB NR01 all used together 

And now, REC2020 color and Fuji's Flog gamma (along with 10bit color, 180 Mbps HEVC, no noise reduction):
 

Actually, the GoPro Hero 11 is not so bad in dim light. In-camera noise reduction turned off:
Noise reduction is turned off using GoPro Labs firmware. Flat color. No stabilization (used the Shorty tripod). Bitrate upped to 180 Mbps. 10bit color. Shot in windowless, very dim Grand Central Terminal and its underground areas.

Another dirty window video:
 

I agree completely about the low light. I don't see the haze or the mud in good light, though. Maybe I am seeing-impaired. Or maybe you have exp post confirmation bias - you formed an opinion based on outmoded facts and your old camera (Hero 8) and that is what you keep seeing no matter what. Your Hero 8 IQ is truly second-rate on dynamic range and color and resolution (and stabilization); and maybe that is what has put you in this state along with countless old posts on the internet talking about how inferior small sensors are. I just do not see what you are describing in the Hero 11 5.3K videos, and I am not blind to differences across cameras. But, maybe I am. I respect your knowledge, that is not the issue. And I am not claiming the Hero 11 IQ is the same as that from the top bigger-sensor cameras, many of which I also use. But dirty window? No.

I don't see what you see. And I certainly see a big difference in dynamic range, color fidelity, and resolution between the Hero 8 and Hero 11. I think you need to re-evaluate. There have been major advances in processing video in just a few years, allowing small sensors to produce high quality video, new cell phones included. I shoot 8K RAW video too, and I find the Hero 11 capability impressive visually. And you forgot the stabilization ability that has no peers.

For the static clips with no movement of camera or subject the camera upped the bitrate from 163 to 167 Mbps when NR was turned off. The greater detail and noise (random movements) need more bits, and if there is detail movement, well.... It is easy to increase the bitrate in the Labs firmware. 180 Mbps (up from the default 120 Mbps) works fine with the Sandisk Extreme V30 card included for free with the Hero 11 from GoPro. And of course that works for larger capacities. 180 Mbps is just the max, the camera uses variable bitrate so most of the time the bitrate is less. like for the static shots.
Forget, however, 400 Mbps All-I - the max bitrate anyone has obtained is 180 Mbps.

First, the Flat profile is indeed a log profile, and the gamma can be adjusted in the camera. And 10bit colors was available at the start even in 5.3K 60p. In Linear mode, there is hardly any fisheye, and at 5.3K resolution there is plenty of detail for 4K despite the crop.
But now with GoPro Labs firmware:
1. You can up the bitrate to 200 Mbps (HEVC, 10bit).
2. You can now shoot 4K 120p in 10bit (newest firmware).
3. You can turn off noise reduction - and you get visibly more detail, and any noise is actually very fine.
5.3K using 2.35:1 crop (10bit, Flat, Linear, extended color gamut (Native), 180 Mbps HEVC):
4K 120P 10bit, Flat, 180Mbps:
 

OK
So for anyone wanting to try this, I have made a really simple method to do it.
I have tested this numerous times on my GX80 and it has lived to tell the tale but obviously do this at your own risk.
All that this process does is fool the camera into thinking its talking to the smartphone app and then the commands it sends are exactly what the smartphone app sends. Or would do if the smartphone app thought it was talking to a camera equipped with Cinelike D !
So as such it is only getting sent what the Panasonic app would be sending to it so there are no hacky or sneaky debug things getting sent to it. 
Again, though, proceed at your own risk.
Although I would say, if you’ve tried that region switching hack on YouTube with the 10 million key press combos during power up then you’re already brave enough to try this!
Bear in mind that my unit is a GX80 and the firmware is version 1.0
If you have a GX85 or have got a different firmware then I just don’t know because obviously I haven’t got any other devices to test it on.
 
Here we go then….
Follow these instructions exactly and you should have Cinelike D on your GX80/85
You will need a laptop or a phone with a browser, the camera and to download the simple html file attached.
 
1) Switch on camera and turn on wifi as though you were connecting the app and you should see the waiting screen on the camera
2) Load the Deploy Cinelike D.html file into your browser
3) Select ‘Handshake’ 
4) You should see the browser page change and it confirm that its connected to a GX80
5) Hit the back key on the browser
6) Select ‘Connect’
7) You should see the browser page change to say ‘ok’ and the camera give you an ‘Under Remote Control’ message
8) Wait until the camera screen shows you a live view
9) Hit the back key on the browser
10) Select ‘Deploy’
11) You should see the browser page change to say ‘ok’ and the camera should NOT now be displaying the Photo Style you had selected (i.e. Standard, Vivid etc) 
12) Cinelike D is now active on the camera
13) If you go into the menu on the camera and select Photo Style you will see that it is blank and you can’t navigate to other Photo Styles such as Standard etc. 
14) To restore the Photo Styles hit the back button on the browser and select ‘Restore’ and the camera will display the Standard photo style and you should then be able to go into Photo Styles and change them.
15) Repeat 9-14 to switch between them to your hearts content!
 
So, like other settings, the Cinelike D profile will persist when you switch the camera off so if you want to use the other Photo Styles again then you MUST go this process again to re-enable them.
However, if you would like to switch between them without using this method again (and who wouldn’t) here is a neat way round it.
When you’ve done Step 12 and got Cinelike D on, set all your other parameters (4K24p etc) as you’d like them and save these into C1 of the custom settings.
Then go to Step 14 and use the ‘Restore’ to get your standard Photo Styles back, set all your other parameters (4K24p etc) as you’d like them and then save these into C2 of the custom settings.
Now when you switch the camera on, you simply choose C1 to have Cinelike D or C2 for the standard Photo Styles and forget about using any nonsense about using browsers and wifi connections!
 
In couple of weeks I’m hoping to show you how you can do stuff like this and some other useful bits and pieces from a little hardware gadget that will work on the Panasonic cameras but have fun with this in the meantime.
DEPLOY CINELIKE D.html

Found this IMX492LQJ poking around Sony's website.
https://www.sony-semicon.co.jp/products/common/pdf/IMX492LLJ_LQJ_Flyer.pdf
It's a multi-aspect sensor that does 8k video and has an all pixel readout of 8432x5680.   The 17:9 and 4:3 modes are subsets of this.  I think it has a global shutter mode too.
Could be an very interesting chip for the next generation of M43 cameras.  I used to not care so much about 8k video, but considering a GH6 will probably need to remain competitive for a 5 year or more product cycle, it is probably something Panasonic should think about as it will be competing with full frame cameras and cell phones that already offer 8k.  I'd personally probably shoot 99% of the time in some 4k 10 bit VLOG mode, but having the option of going to 8k video capture for special situations could be ideal.
Honestly, if this offers great (S1 like) color science and a full 10 bit VLOG in 4:2:2, I could be happy with this camera for 5-10 years.
Fun times!  I'm still hopeful for the future of M43 now that we've had a round of full frame camera releases from all the major manufacturers.

It's hard to say it's gone wrong. It's so-called creative destruction. There's simply no need for a mass consumer camera market any more. Every home used to have a camera, be it a compact, a SLR, a Polaroid or whatever. No-one needs those any more because everybody (even the children) has a phone that will take better snaps with fewer skills, in a format that allows instant sharing.

Osaka BlackCat's use on D-Cinelike night footage coming from such tiny sensor size going with that low light outcome still really impresses me... :- )

I am a little confused on why it doesn't have 10 bit 422 recording. You'd think a smaller sensor would be capable considering we have stuff like the Sigma FP doing full frame RAW internally. Also what's with camera companie's obsession with not being able to dial back sharpening? 

He doesn't test cameras but his face to his followers.
Here's a test for serious:
Who can not buy one?

Shot this 4K video on the G9 of my favorite park:
-12-60mm Panasonic kit lens
-HLG Picture style
-Edited in Davinci