Is it possible for two AV files to share one sidecar file?
An Apple Live Photo is made up of an image file (JPG) and a video file (MOV), and they share the same base name, e.g., IMG_1000.JPG and IMG_1000.MOV.
If I programmatically create an XML sidecar for the image file, it will be named (if I follow the XMP spec), IMG_1000.XMP. However, if I then create a sidecar for the video file, it will use the same filename.
I tested this using Phil Harvey's ExifTool, and it appears that the second action overwrites the metadata from the first. Thus, it seems that my sidecar is really only associated with my video file, and not my image file.
This leads me to wonder if it is possible to use a single sidecar with an Apple Live Photo, or with any two AV files.