Dolby Vision now possible through MP4 Mux.

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RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

spl147 wrote:
Tue Jun 27, 2023 2:25 pm
So then what is gained/lost?
You gain extra quality/brightness from the FEL.
Sorry for my English.
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spl147
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Re: Dolby Vision now possible through MP4 Mux.

Post by spl147 »

RESET_9999 wrote:
spl147 wrote:
Tue Jun 27, 2023 2:25 pm
So then what is gained/lost?
You gain extra quality/brightness from the FEL.
So then would it be the same if played back as HDR10 or DV
spl147
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Re: Dolby Vision now possible through MP4 Mux.

Post by spl147 »

RESET_9999 wrote:of course, no different than any HDR10 + P8 encode.
What would be the command line to accomplish this?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

spl147 wrote:
Tue Jun 27, 2023 2:28 pm
So then would it be the same if played back as DV
only if you compare it to DV on a device that support FEL.
What would be the command line to accomplish this?
I posted my cli a couple post ago.
Sorry for my English.
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spl147
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Re: Dolby Vision now possible through MP4 Mux.

Post by spl147 »

RESET_9999 wrote:
spl147 wrote:
Tue Jun 27, 2023 2:28 pm
So then would it be the same if played back as DV
only if you compare it to DV on a device that support FEL.
What would be the command line to accomplish this?
I posted my cli a couple post ago.
Workflow 6-9 using your scripts?

I was referring to using dovibaker
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

spl147 wrote:
Tue Jun 27, 2023 2:43 pm
I was referring to using dovibaker
its a ffmpeg x265 cmd and can be used wit the dovi baker. Just change the variables.
Sorry for my English.
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mattiswise
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Re: Dolby Vision now possible through MP4 Mux.

Post by mattiswise »

How would i bake the EL into the BL?

This is for FEL titles only correct?




Can someone translate this into noob for me please?
speeddemon
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Re: Dolby Vision now possible through MP4 Mux.

Post by speeddemon »

RESET_9999 wrote:
Tue Jun 27, 2023 2:14 pm
speeddemon wrote:
Mon Jun 26, 2023 10:02 pm
Aside from the time/effort involved. Is there a downside to doing this and/or anything you miss out on or that could be improved upon further from your tutorial?
The only thing I don't do in the video is the project image scaling. I found out that if you set your project to 1080p with cubic algo, it produces much better metadata that are almost identical to the original.
https://ibb.co/r2tMX6n
Just curious, do you know why this produces better results?
Also, have you considered adding this note to the video description on YouTube? It might help others who follow along, but don't come read this message.
RESET_9999 wrote:
Tue Jun 27, 2023 2:14 pm
speeddemon wrote:
Mon Jun 26, 2023 10:02 pm
Also, what would it take to analyze for multiple trims or does it already do this? Have you ever attempted this?
Your project set to CMV4.0 will produce L2 trims. My script by default, will remove them as explained recently in this thread.
Why set the project to CMv4.0 instead of CMv2.9 then? Would you not get better results just initially setting to CMv2.9 to avoid the issues you demonstrated here with CMv2.9 when CMv4.0 analysis is used?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

speeddemon wrote:
Tue Jun 27, 2023 4:25 pm
Why set the project to CMv4.0 instead of CMv2.9 then? Would you not get better results just initially setting to CMv2.9 to avoid the issues you demonstrated here with CMv2.9 when CMv4.0 analysis is used?
This video doesn't show issues. It just shows the difference between the format.
CMV4.0 is the latest dolby algo and it produces better metadata and Dolby recommends using it even if you're going to deliver in CM v2.9
NOTE It’s currently recommended for all users to choose Dolby Vision v4.0 for analysis
and trimming, as it provides superior results. If you’re required to deliver Dolby Vision v2.9
metadata when mastering for backwards compatibility, DaVinci Resolve can now export
v2.9 metadata from projects using v4.0 workflows.
Sorry for my English.
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spl147
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Re: Dolby Vision now possible through MP4 Mux.

Post by spl147 »

do we need to download ALL these tools listed in the readme seperately?
speeddemon
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Re: Dolby Vision now possible through MP4 Mux.

Post by speeddemon »

RESET_9999 wrote:
Tue Jun 27, 2023 4:33 pm
speeddemon wrote:
Tue Jun 27, 2023 4:25 pm
Why set the project to CMv4.0 instead of CMv2.9 then? Would you not get better results just initially setting to CMv2.9 to avoid the issues you demonstrated here with CMv2.9 when CMv4.0 analysis is used?
This video doesn't show issues. It just shows the difference between the format.
CMV4.0 is the latest dolby algo and it produces better metadata and Dolby recommends using it even if you're going to deliver in CM v2.9
NOTE It’s currently recommended for all users to choose Dolby Vision v4.0 for analysis
and trimming, as it provides superior results. If you’re required to deliver Dolby Vision v2.9
metadata when mastering for backwards compatibility, DaVinci Resolve can now export
v2.9 metadata from projects using v4.0 workflows.
Maybe it's just the camera, but it looks to me like CMv4 analysis presented in CMv2.9 is crushing shadows in this image:
Image

Is that not the case in real life?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

My camera dynamic range is very limited. it will always make the black crush or blown highlight worse than they are in reality.
In reality that shot does look darker but not as crushed as you can see in the video. The video just shows how avg_pq metadata generation is different in cmv4.0.
If you compare cmv4.0 vs cmv2.9 with the same L1, its closer but overall, CMV4.0 always outperforms 2.9.
https://www.youtube.com/watch?v=c8aySWARxyM

FYI, most of the movies(90%+) are done in CM v4.0 but delivered in CM v2.9. You can know that by looking at the avg_pq metadata minimum: 10nits in 4.0 and 2.5nits in 2.9.
Sorry for my English.
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speeddemon
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Re: Dolby Vision now possible through MP4 Mux.

Post by speeddemon »

RESET_9999 wrote:
Tue Jun 27, 2023 4:53 pm
My camera dynamic range is very limited. it will always make the black crush or blown highlight worse than they are in reality.
In reality that shot does look darker but not as crushed as you can see in the video. The video just shows how avg_pq metadata generation is different in cmv4.0.
If you compare cmv4.0 vs cmv2.9 with the same L1, its closer but overall, CMV4.0 always outperforms 2.9.
https://www.youtube.com/watch?v=c8aySWARxyM

FYI, most of the movies(90%+) are done in CM v4.0 but delivered in CM v2.9. You can know that by looking at the avg_pq metadata minimum: 10nits in 4.0 and 2.5nits in 2.9.
Thanks for the explanation!
What would it take to actually export properly in CMv4 outputting proper L2 & L8?
Also, how far off are these results from what a professional colorist would come up with?
RESET_9999
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Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

speeddemon wrote:
Tue Jun 27, 2023 7:16 pm
What would it take to actually export properly in CMv4 outputting proper L2 & L8?
Also, how far off are these results from what a professional colorist would come up with?
You can't edit L2/L8 without a DV license so what you get is the default values from the dolby algo.
see my explanation of why you should remove them here: viewtopic.php?p=137417#p137417
Sorry for my English.
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speeddemon
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Re: Dolby Vision now possible through MP4 Mux.

Post by speeddemon »

RESET_9999 wrote:
Tue Jun 27, 2023 7:57 pm
speeddemon wrote:
Tue Jun 27, 2023 7:16 pm
What would it take to actually export properly in CMv4 outputting proper L2 & L8?
Also, how far off are these results from what a professional colorist would come up with?
You can't edit L2/L8 without a DV license so what you get is the default values from the dolby algo.
see my explanation of why you should remove them here: viewtopic.php?p=137417#p137417
Is that a Dolby Encoding Engine license or a special DaVinci DV license? I'm wondering if I already have access to that through my work.
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