If, for you, the numbering is NOT continuous across card changes or emptyings etc.  in what circumstances did/does that happen i.e. precisely what did/do you do with the card/s e.g. did/do you format the card/s, if so where or how? Do you use a reader or.......... etc. etc. etc.?
What drone?

I have never experienced a problem and swap cards quite frequently, any formatting of the cards is done in Windows but as a rule I do not format a card when I empty it. For downloading or emptying my cards are removed from the drone and placed in a reader attached to the computer.
I suspect there is a pattern to be discovered.

I suspect there is a pattern to be discovered.
The pattern was discovered long ago.
There's nothing complicated about it.
If you use the Fly ap and give the camera a clean formatted card, it will always start at 001.
If the card has image files, the camera will continue the numbering from the latest file.

Labroides Posted at 4-21 02:53
I suspect there is a pattern to be discovered.
The pattern was discovered long ago.
There's nothing complicated about it.

Yet none of my fly app using drones (I have more than 5 of them) do that (start from 1), and that includes the use of freshly formatted via windows cards. I run H2testw on every new card  and then format the card to remove the test files so, a new card of mine is always freshly formatted.

How does that fit with your pronouncement?

Sean-bumble-bee Posted at 4-21 03:31
Yet none of my fly app using drones (I have more than 5 of them) do that (start from 1), and that includes the use of freshly formatted via windows cards. I run H2testw on every new card  and then format the card to remove the test files so, a new card of mine is always freshly formatted.

How does that fit with your pronouncement?

Then yours performs differently from all the others out there.
Like the one in this thread: https://forum.dji.com/forum.php? ... D556%26typeid%3D556

Labroides Posted at 4-21 02:53
I suspect there is a pattern to be discovered.
The pattern was discovered long ago.
There's nothing complicated about it.

That's not the case.

My Mini 2 is on it's 3rd freshly formatted card. Each new card continues the numbering from the previous card.

After reading this post, I formatted the card in my Air 2. After inserting it into the drone and taking a photo, it doesn't reset to 1. However, changing the storage location to local storage did reset it to 1. But upon formatting the local storage, it didn't reset.

blue_canyon21 Posted at 4-24 06:08
That's not the case.

My Mini 2 is on it's 3rd freshly formatted card. Each new card continues the numbering from the previous card.

Since the Fly app was released users have complained that there was no continuous file index available.
But in the last week, there was another thread on this and a member pointed out that it works if the SD card is formatted in the computer.