To protect against the possibility of data loss, it is common convention to download all media to at least two separate sources and to keep those sources in separate physical locations. Another common practice is to maintain the original folder structures from camera media because some camera manufacturers rely on the directory structure and camera-assigned filenames in their processing software. Offload apps such as ShotPut Pro or Hedge offer checksum verification during media offloading that is used to verify that the files were copied without errors from the camera media to drives.
On some immersive camera rigs, each lens records to its own media. If you are using 3rd party stitching software you may have to organize the files to prepare for stitching. This normally involves taking the files from each card and organizing them according to the ‘take.’ For camera systems that use multiple cards this means taking the first file from card one, the first file from card two and so on, and creating a ‘take’ folder that contains a single file from each camera.
Once the media is organized, the project is ready to stitch.