Satellite images are stored in many folders named with different dates. Right now, I am using arcgis desktop 10.4.1 Extract By Mask (batch) to remove clouds. Each time of batch processing, I can only finish one folder's images ( which are 6 images in total) because different folders have different masks. The speed is way too slow because I have more than 500 images waiting for me to extract. Is it possible to do it with a loop?? Any ideas?? Thank you!