My Panasonic HC-V500 camcorder is great, except when I need to copy videos and delete them. If I put the SD card in the computer and delete video files, the camcorder shows a question mark for the missing files. It even does that when I remove the thumbnail files as well.
I know there is some file that maintains an index or playlist, because if I delete the whole folder structure, the files no longer appear on the camcorder as missing.
However, if I delete everything, then the file name counter is reset. Each video is named 00000.mts, then counts up for each new video. If I delete the folder structure, all the names reset and start over at 00000 (unlike my camera, which keeps a count internally that persists over different cards, so there is never any overlap).
If I tell the camcorder itself to delete specific files, it doesn't reuse those numbers. And if I manually delete all but the latest, it still continues to count from the last number. However, if I delete the last file, it will reset the counter.
How can I keep the number from the last video so that I don't have to worry about duplicate file names? You can't protect videos from the delete all function (no such function on the camcorder, and marking as read-only on the computer doesn't work), and deleting one by one in order to keep the last video is way too time consuming.