Based on the information you provided, it sounds like the clip has a lot of variations in color and exposure, which can be challenging to fix. Here are a few approaches that you can try:
1. Use color grading tools: In DaVinci Resolve, you can use the color grading tools to adjust the exposure, contrast, and color of the clip. You can use the scopes to analyze the color values of the clip, and then adjust the color grading controls to bring the colors into balance. You may need to make adjustments to each individual shot or frame to get the best results.
2. Use automated color correction: If you don’t want to manually adjust each frame, you can use the automated color correction tools in DaVinci Resolve. You can try using the “Color Match” feature, which will analyze a reference clip and match the colors of your problem clip to the reference. You can also use the “Auto Color” feature, which will attempt to automatically adjust the colors of the clip based on the overall color balance.
3. Use keyframing to adjust exposure: If the exposure changes are the main issue, you can use keyframing to adjust the exposure of the clip frame-by-frame. You can add keyframes to the exposure controls and then adjust them to match the brightness and exposure of each individual frame.
4. Use a secondary color correction: If there are specific areas of the clip that have different color values or exposure, you can use the secondary color correction tools to adjust those specific areas. You can use the Power Windows to select the area that you want to adjust, and then use the color grading controls to make the necessary adjustments.