How to fix "Cant play this video" error in Camera MX Live Shots after upgrade?
After using exiftool I went one level deeper and just opened one of the .jpg files with a hex editor.  Turns out the path to the 'live shot' is indeed embedded in the .jpg file, just not as EXIF data (or at least not standard EXIF data that exiftool can read).  I put my SD card into my linux laptop and tried using the following sed command to fix them:

sed -i 's/\/storage\/extSdCard\/Android\/media\/com\.magix\.camera_mx\/Camera MX (SD)\/\.LiveShot/\/storage\/3F25-4093\/Android\/media\/com\.magix\.camera_mx\/Camera MX (SD)\/\.LiveShot/g' *.jpg


This worked for some of the files, but others (with even older paths such as /storage/emulated/0) simply became corrupt afterward.  If anyone knows of a better fix I'd love to hear it.