How to diagnose banding in AI video skies and shadows

Before you begin

The most useful first question is where the banding becomes visible: in the source, after grading, in the exported file or only after a platform processes it.

Compare the same region through the pipeline

Choose a short shot with a clear gradient and no complicated transition. Inspect it with the creative grade bypassed, with the grade active and after export. Use the same display and comparable viewing size for the initial comparison.

If the defect appears only after a strong contrast or color adjustment, reduce that adjustment temporarily. This helps identify whether the finish is exposing weak source information or a processing limitation.

Check processing depth where relevant

Adobe's After Effects guidance explains why higher color depth can produce smoother calculated gradients. The important distinction is between the precision used during processing and the information already present in an imported file.

A higher-depth project may help avoid introducing additional stepping during effects and compositing. It does not turn a damaged or low-detail source into an original high-precision capture. Check whether the effects and output path support the intended workflow.

Working on the next decision? Read Why does your AI video look different after export?.

Test compression independently

Export a short high-quality comparison using an appropriate supported format, then compare it with the intended delivery encode. Change one meaningful variable at a time so you can understand the result.

A larger file is not automatically a better image. If both exports show the same steps in the same place, return to the source and processing stages. If the issue appears only in the smaller delivery or the platform copy, investigate that stage's constraints.

Be cautious with added texture

Subtle noise or grain may make a gradient's steps less noticeable in some cases, but it is a finishing choice to test, not a guaranteed repair. It can also make the image busier and interact poorly with compression.

Compare a clean version and a textured version after the actual delivery encode. Inspect faces, text and dark regions as well as the original problem area. A fix that hides one sky but degrades the whole film is not a useful trade.

Know when to replace the shot

If the source gradient is severely damaged and central to the composition, an alternative generation, background or shot may be the more efficient choice. Decide before spending hours on a correction that never survives export.

For creative color work, keep a difficult gradient in your test sequence. It is a useful stress case when choosing a look, but no LUT should be treated as a banding-removal tool.