Color Banding with Filmbox - Have tried Aces and DWG both

[sibtainmushtaq]

Hello having alot of color banding with filmbox please have a look

https://youtu.be/1Fw6xPLZoDc

[gregcotten]

Hi - this looks like you probably don't have color management set up in your Resolve project correctly. Please check the User Guide PDF in the help menu for more info, or if you are still having issues please email us at support@videovillage.com with screenshots of: your color management settings in your project, any input colorspace settings you might have on the clip you're having trouble with, and of course your Filmbox settings. Also provide a source clip if you can so we can check on our end.

[sibtainmushtaq]

Hello , I think I do have it setup correctly as I also use the same settings on Dehancer and it has no color banding

[sibtainmushtaq]

https://youtu.be/1Fw6xPLZoDc [maxresdefault.jpg] Filmbox Color Banding - tried Aces and DWG bothhttps://youtu.be/1Fw6xPLZoDc youtu.behttps://youtu.be/1Fw6xPLZoDc

Here you go

[andrewfinch]

Hi it appears that your original footage (visible when you bypassed filmbox in the video) is clipped in the sky - so any grade operation that attempts to pull more color out of the sky like Filmbox does is going to make that clipping more apparent. This is also exacerbated by the fact that the footage is display-referred and has to go through an inaccurate transform to produce log-like image data.

Here is a demonstration with a screenshot of your original footage using just a curves and saturation adjustment (no filmbox):

You can try to roll off the highlights to make the transition from blue sky to clipped sky less apparent and then possibly key in a blue sky later if that is desired. Here is a LUT you can run in ACEScct before Filmbox that might help to roll off the highlights:

rolloff.cube.zip

[sibtainmushtaq]

Iv filmed in HLG 3 , and as I said dehancer doesn’t show any color banding , Iv other footage where there is no sky but color banding in the shirt , necklace , trees , etc

Sent from my iPhone

On Nov 22, 2024, at 3:38 AM, Andrew Finch @.***> wrote:



Hi it appears that your original footage (visible when you bypassed filmbox in the video) is clipped in the sky - so any grade operation that attempts to pull more color out of the sky like Filmbox does is going to make that clipping more apparent.

Here is a demonstration with a screenshot of your bypassed footage using just a curves and saturation adjustment:

Screenshot.2024-11-21.at.4.36.55.PM.png (view on web)https://github.com/user-attachments/assets/5ad906d6-7c83-4b64-9c64-cdc11486b428

You can try to roll off the highlights to make the transition from blue sky to clipped sky less apparent and then possibly key in a blue sky later if that is desired. Here is a LUT you can run in ACEScct before Filmbox that might help to roll off the highlights:

rolloff.cube.ziphttps://github.com/user-attachments/files/17853658/rolloff.cube.zip

— Reply to this email directly, view it on GitHubhttps://github.com/videovillage/community/issues/207#issuecomment-2492637029, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3HYIHPEVPA6HAW4UFUQOSL2BZ4JFAVCNFSM6AAAAABSID57BWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDIOJSGYZTOMBSHE. You are receiving this because you authored the thread.Message ID: @.***>

[sibtainmushtaq]

here is a comparison video between both plugins and same settings

https://youtu.be/RiWXKBgTUGY

i hope there is an update to fix this issue.

thanks in advance

Sibtain Mushtaq +255785413742

[gregcotten]

Is your source media truly sRGB? Please send us a source media clip that has this banding directly at support@videovillage.com and we can take a look at it

[sibtainmushtaq]

Sure , I have tried DWG method too and I still am getting the color banding

Is there something that can be fixed in the plugin ? And an update to sort this spill ? As clearly Iv shown you both plugins under same settings

On Nov 22, 2024, at 5:51 PM, Greg Cotten @.***> wrote:



Is your source media truly sRGB? Please send us a source media clip that has this banding directly at @.**@.> and we can take a look at it

— Reply to this email directly, view it on GitHubhttps://github.com/videovillage/community/issues/207#issuecomment-2493935794, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3HYIHPJWLTGFL35WX5GEK32B5AF5AVCNFSM6AAAAABSID57BWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDIOJTHEZTKNZZGQ. You are receiving this because you authored the thread.Message ID: @.***>

[gregcotten]

I am not familiar with how Dehancer works so I can't really discuss A/B comparisons. Please send an example clip to us so we can reproduce it on our end at support@videovillage.com

[sibtainmushtaq]

here you go https://drive.google.com/drive/folders/1BG8UVCNZFnGtKrtGo4_kGWQYwoQI0k0J?usp=sharing

[sibtainmushtaq]

Have attached Google drive link above

On Nov 22, 2024, at 6:08 PM, Greg Cotten @.***> wrote:



I am not familiar with how Dehancer works so I can't really discuss A/B comparisons. Please send an example clip to us so we can reproduce it on our end at @.**@.>

— Reply to this email directly, view it on GitHubhttps://github.com/videovillage/community/issues/207#issuecomment-2493973598, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3HYIHJC6XWW6F7DFJD27BT2B5CIDAVCNFSM6AAAAABSID57BWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDIOJTHE3TGNJZHA. You are receiving this because you authored the thread.Message ID: @.***>

[andrewfinch]

Hi after reviewing your footage it appears to be scene-referred HLG (Rec 2100 HLG) with Rec709 primaries rather than display-referred sRGB:

Setting the ACES IDT to sRGB as you have done in your video will produce unpredictable results. ACES does not have an IDT for this type of footage. The simplest setup is as follows:

Disable all color management, (use Rec709-A and ensure "Use Mac display color profiles for viewers" is enabled if grading on a Mac):

Use a Resolve Color Space Transform node to convert to one of the input spaces that Filmbox supports such as ACEScct.

Configure Filmbox Source to ACEScct:

The image seems to be fairly over exposed in camera, but this is the resulting image after reducing the exposure by 1.5 stops:

[sibtainmushtaq]

I’ll give this a try hope it’s don’t get color shifts on export and different platforms As my current settings with export preset gives no color shifts on YouTube , phone etc ( different platforms )

On Nov 22, 2024, at 10:08 PM, Andrew Finch @.***> wrote:



Hi after reviewing your footage it appears to be scene-referred HLG (Rec 2100 HLG) with Rec709 primaries rather than display-referred sRGB: Screenshot.2024-11-22.at.10.47.07.AM.png (view on web)https://github.com/user-attachments/assets/c6f7af94-0d50-41b4-92d0-e0f6cf475b42

Setting the ACES IDT to sRGB as you have done in your video will produce unpredictable results. ACES does not have an IDT for this type of footage. The simplest setup is as follows:

Disable all color management, (use Rec709-A and ensure "Use Mac display color profiles for viewers" is enabled if grading on a Mac): Screenshot.2024-11-22.at.11.02.12.AM.png (view on web)https://github.com/user-attachments/assets/1874d7fb-e510-4956-bc40-7eedeaf9d1c4

Use a Resolve Color Space Transform node to convert to one of the input spaces that Filmbox supports such as ACEScct. Screenshot.2024-11-22.at.10.46.20.AM.png (view on web)https://github.com/user-attachments/assets/5f0206e6-2e07-481b-8acd-d456ead666c8 Configure Filmbox Source to ACEScct: Screenshot.2024-11-22.at.10.55.43.AM.png (view on web)https://github.com/user-attachments/assets/721ca99e-5961-4950-96e4-4aa6e4dcf20b

The image seems to be fairly over exposed in camera, but this is the resulting image after reducing the exposure by 1.5 stops: Screenshot.2024-11-22.at.10.57.16.AM.png (view on web)https://github.com/user-attachments/assets/8282b98e-992a-49d2-a608-8c23577cbaad

— Reply to this email directly, view it on GitHubhttps://github.com/videovillage/community/issues/207#issuecomment-2494599039, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3HYIHNGXKGIGXGJMG4N6N32B56LJAVCNFSM6AAAAABSID57BWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDIOJUGU4TSMBTHE. You are receiving this because you authored the thread.Message ID: @.***>

[sibtainmushtaq]

i tried above method , but not getting the look ! feels muddy

to Add im loosing all the dynamic range in the scene

[sibtainmushtaq]

i tested the highlight roll off cube you provided and seems to have solved my issue ! hope this option could be included in Filmbox for us in built to roll off

Hi it appears that your original footage (visible when you bypassed filmbox in the video) is clipped in the sky - so any grade operation that attempts to pull more color out of the sky like Filmbox does is going to make that clipping more apparent. This is also exacerbated by the fact that the footage is display-referred and has to go through an inaccurate transform to produce log-like image data.

Here is a demonstration with a screenshot of your original footage using just a curves and saturation adjustment (no filmbox):

You can try to roll off the highlights to make the transition from blue sky to clipped sky less apparent and then possibly key in a blue sky later if that is desired. Here is a LUT you can run in ACEScct before Filmbox that might help to roll off the highlights:

rolloff.cube.zip

i tested the highlight roll off cube you provided and seems to have solved my issue ! hope this option could be included in Filmbox for us in built to roll off

[andrewfinch]

I'm glad the LUT works for you, however you should be aware that it was built assuming your footage was sRGB which is not the case, so whatever look it is producing is arbitrary and may be prone to further artifacting or undesirable color characteristics in other scenes. It is generally safer to start with an accurate color pipeline and produce whatever creative look you want using manual grade operations either before the filmbox node or between the negative and print nodes in a multi-node workflow.

[sibtainmushtaq]

I’m still surprised why this is doing this to be honest as I feel like I wasn’t seeing this issue before until my update on both Filmbox and DaVinci

Is there a roll back option for Filmbox for me to test ?

On Nov 22, 2024, at 11:27 PM, Andrew Finch @.***> wrote:



I'm glad the LUT works for you, however you should be aware that it was built assuming your footage was sRGB which is not the case, so whatever look it is producing is arbitrary and may be prone to further artifacting or undesirable color characteristics in other scenes. It is generally safer to start with an accurate color pipeline and produce whatever creative look you want using manual grade operations either before the filmbox node or between the negative and print nodes in a multi-node workflow.

— Reply to this email directly, view it on GitHubhttps://github.com/videovillage/community/issues/207#issuecomment-2494740800, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3HYIHJK7OF2GW3VQFI3DCL2B6HTXAVCNFSM6AAAAABSID57BWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDIOJUG42DAOBQGA. You are receiving this because you authored the thread.Message ID: @.***>

[sibtainmushtaq]

can you explain how you made the highlight roll off lut please ?

[sibtainmushtaq]

I’m still surprised why this is doing this to be honest as I feel like I wasn’t seeing this issue before until my update on both Filmbox and DaVinci Is there a roll back option for Filmbox for me to test ? On Nov 22, 2024, at 11:27 PM, Andrew Finch @.> wrote:  I'm glad the LUT works for you, however you should be aware that it was built assuming your footage was sRGB which is not the case, so whatever look it is producing is arbitrary and may be prone to further artifacting or undesirable color characteristics in other scenes. It is generally safer to start with an accurate color pipeline and produce whatever creative look you want using manual grade operations either before the filmbox node or between the negative and print nodes in a multi-node workflow. — Reply to this email directly, view it on GitHub<#207 (comment)>, or unsubscribehttps://github.com/notifications/unsubscribe-auth/A3HYIHJK7OF2GW3VQFI3DCL2B6HTXAVCNFSM6AAAAABSID57BWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDIOJUG42DAOBQGA. You are receiving this because you authored the thread.Message ID: @.>

is there a roll back option for filmbox?