If you shot RAW MLV footage, in MLVApp you can use one of the followings:
1-From "Lens Correction" Tab --> "CA Desaturate Threshold" slider
You may try other tools also:
2-in "Details" --> Enable "Chroma Separation" --> Use "Chroma Blur Radius" slider
3-Also in "Details" tab --> "RBF Denoise Chroma" slider
This tools may affect saturation of the image colors too, try the best values and best tool from above for you.