Can you post the mediainfo for your clip? Mediainfo is a free app you can download that generates a report that tells us important info about your clip that we need to know to help you.

To go into more detail, things about your video, such as its bitrate, bit depth, etc. can tell us whether banding should be expected when applying an effect like this. If the clip's quality is low to begin with, then applying any kind of extensive color grading or effects that affect the color, brightness, contrast, etc. of the video will likely bring out banding that was already there, but just wasn't as visible in its native form.

Its from a GoPro 5

General
Complete name                            : C:\Users\rapri\OneDrive\Desktop\fog oct 14 2023\GP010660.MP4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 1
Codec ID                                 : mp41 (mp41)
File size                                : 3.73 GiB
Duration                                 : 23 min 37 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 22.6 Mb/s
Frame rate                               : 59.940 FPS
Encoded date                             : 2023-10-14 10:41:11 UTC
Tagged date                              : 2023-10-14 10:41:11 UTC
xyz                                      : +51.0706-114.0628/

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.2
Format settings                          : CABAC / 1 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 1 frame
Format settings, GOP                     : M=1, N=30
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 11 min 48 s
Bit rate mode                            : Variable
Bit rate                                 : 45.0 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 59.940 (60000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.362
Stream size                              : 3.71 GiB (100%)
Title                                    : GoPro AVC
Language                                 : English
Encoded date                             : 2023-10-14 10:41:11 UTC
Tagged date                              : 2023-10-14 10:41:11 UTC
Color range                              : Limited
colour_range_Original                    : Full
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 11 min 48 s
Bit rate mode                            : Constant
Bit rate                                 : 128 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 10.8 MiB (0%)
Title                                    : GoPro AAC
Language                                 : English
Encoded date                             : 2023-10-14 10:41:11 UTC
Tagged date                              : 2023-10-14 10:41:11 UTC

Other #1
ID                                       : 3
Type                                     : Time code
Format                                   : QuickTime TC
Duration                                 : 11 min 48 s
Bit rate mode                            : Constant
Frame rate                               : 59.940 (60000/1001) FPS
Time code of first frame                 : 10:51:25:15
Time code of last frame                  : 11:03:25:14
Time code, stripped                      : Yes
Title                                    : GoPro TCD
Language                                 : English
Encoded date                             : 2023-10-14 10:41:11 UTC
Tagged date                              : 2023-10-14 10:41:11 UTC

Other #2
ID                                       : 4
Type                                     : meta
Format                                   : gpmd
Codec ID                                 : gpmd
Duration                                 : 23 min 37 s
Bit rate mode                            : Variable
Title                                    : GoPro MET
Language                                 : English
Encoded date                             : 2023-10-14 10:41:11 UTC
Tagged date                              : 2023-10-14 10:41:11 UTC

Other #3
ID                                       : 5
Type                                     : meta
Format                                   : fdsc
Codec ID                                 : fdsc
Duration                                 : 11 min 48 s
Bit rate mode                            : Variable
Title                                    : GoPro SOS
Language                                 : English
Encoded date                             : 2023-10-14 10:41:11 UTC
Tagged date                              : 2023-10-14 10:41:11 UTC
mdhd_Duration                            : 708708

Thanks! While it is 8 bit (sometimes color banding can't be avoided with 8 bit video), it does have a sufficiently high bitrate where it shouldn't be a huge problem. Try this, add the AI Smooth effect to the video, does that help any?

That is definitely a VERY foggy scene, so we're pushing the Dehaze effect to its absolute limits. Noise reduction or AI smoothing may help, but beyond that... anyone else have any ideas?

Thanks! While it is 8 bit (sometimes color banding can't be avoided with 8 bit video), it does have a sufficiently high bitrate where it shouldn't be a huge problem. Try this, add the AI Smooth effect to the video, does that help any?

That is definitely a VERY foggy scene, so we're pushing the Dehaze effect to its absolute limits. Noise reduction or AI smoothing may help, but beyond that... anyone else have any ideas?

It worked. Thank you. My GoPro is 5, I have no idea what the other newer models are.

@Ruby888 Can you upload the original clip (not something you've worked on) to Drive or Dropbox? I've got something I'd like to try.

@Ruby888 Can you upload the original clip (not something you've worked on) to Drive or Dropbox? I've got something I'd like to try.

I don't have any cloud services, the file is just under 4GB

If you have Gmail, you get access to Google Drive with gives you about 17GB.

If you have Gmail, you get access to Google Drive with gives you about 17GB.

here you go:

https://drive.google.com/file/d/1HJS-XSQEACKMNyzkah64q_TohCBlQKOF/view?usp=sharing

Looking at the video, you can see the fog shift and disappear. I am in the middle of a project right now, but just adding AI DeHaze to the first 2 minutes of the video showed an improvement.

You will have to adjust the settings to get the best results.

Having a play with this comparing it to Boris's BCC+Haze.

Having a play with this comparing it to Boris's BCC+Haze.

That looked really good. AI Smooth works well for getting rid of the banding in the sky.

@Gid I've found that I can get BCC+Haze and AI Dehaze pretty close, especially with still images.

@Gid I've found that I can get BCC+Haze and AI Dehaze pretty close, especially with still images.

I use Photoshop for stills, Noise Ninja is a good plugin for PS. I need video. Dehaze and smooth looks good.

@Ruby888 @Reyfox I struggled with the AI, I found it hard to remove the banding but it's not my forte tho.

After reading the comments above I did add the Smooth but I found it smoothed a lot of the detail & I confess my pic above isn't solely BCC+Haze, I had to brighten/contrast the image a little & I added a tiny amount of Sharpen to it. Like I say just playing 👍

PS, things like this truck frustrate me.. 😒😂🤷‍♂️

Thanks for everyone's help.

I use Photoshop for stills, Noise Ninja is a good plugin for PS. I need video. Dehaze and smooth looks good.

A great noise reduction system for video is Neat Video, it's absolutely fantastic. Well worth the $.

I find Vegas AI Dehaze a bit to harsh (at least with 8 bit media), it changes colors and brightness quite a lot, the default setting is in my opinion way to high and intrusive, one seems to need to use the slider always to almost zero to reduce the effect.

BCC+Haze is much more subtle, and the default setting is pretty good. It is still my preferred de-hazer.

Do not get me wrong, Vegas AI Dehaze is a useful tool, especially if you do not have the Boris BCC+Haze, but it needs more love (new and improved AI data models?) and a different, more subtle default setting.

I've used AI Dehaze with still images, and not video. I also have BCC+Haze.

Here is Vegas AI Dehaze.

Boris BCC+Haze

I've used AI Dehaze with still images, and not video. I also have BCC+Haze.

Here is Vegas AI Dehaze.

Boris BCC+Haze

How to you make side by side comparisons?

@Ruby888 Hi, copy snapshot to clipboard without the fx.

Apply or turn the fx.

Choose Clipboard & try Select Left Half..

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Clipboard is showing the wrong colour for me, choose the FX Bypassed instead.