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Which number comes after 0999?
1418 7 2017-10-17
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marciano
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Flight distance : 2950233 ft
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I am repeating a question a asked more than 2 years ago.

If I am not wrong after DJI_0999.JPG comes DJI_1000.JPG.

Right?  Not for DJI
It creates a new folder and start over with DJI_0001.JPG

Why is that?
2017-10-17
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Tripp
First Officer
Flight distance : 2241401 ft
United States
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Yes, it is a bit annoying as now we are creating files with the same name as files created earlier.
2017-10-17
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Labroides
Captain
Flight distance : 9991457 ft
Australia
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That's just the way it has been programmed.  The P2V+ went to 9999 but every Phantom since only goes to 999
2017-10-17
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DJI Susan
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The maximum is limited to 0999 due to the Design Rule for Camera File System.
2017-10-17
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marciano
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DJI Susan Posted at 2017-10-17 20:32
The maximum is limited to 0999 due to the Design Rule for Camera File System.

Design Rule for Camera File System? First time I see I cannot surpass 999. Doesn't make sense.

Just to help others, in Mac I batch rename (right button on all selected files) DJI_0287 to P4P_01287 (replace DJI_0 by P4P_01, P4P_02, etc..) I change DJI by P4P because I also have OSMO and P3P.
Sometimes numbering is reset because of upgrades or other unknown reason.
In that case if last file is P4P_03659, next DJI_0001 is renamed to P4P_10001 so the count jumps from 3659 to 10001.
2017-10-19
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Mark The Droner
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This is discussed on the subject wiki page under DCF Objects.  Apparently in DJI's system, the first number must always be a zero.  Hence DJI_0999 must become DJI_0001.

https://en.wikipedia.org/wiki/Design_rule_for_Camera_File_system

2017-10-19
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Labroides
Captain
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DJI Susan Posted at 2017-10-17 20:32
The maximum is limited to 0999 due to the Design Rule for Camera File System.

The maximum is limited to 0999 due to the Design Rule for Camera File System.

I wonder how it can be that other camera manufacturers have their file system go from 0001-9999.

The Design rule for Camera File system can be viewed here:  http://www.exif.org/dcf.PDF
On page 9 it says .....
3.2.   File definition
3.2.1.  DCF file names
File names conforming to the following rules are called DCF file names
•  The file name is 8 characters (not including the file extension).
•  The first four characters consist only of the upper case alphanumeric characters shown in Table 1-1.  These are referred to as the DCF file name Free  characters.  They shall not contain two-byte characters or special codes.
•  The four characters that follow are a number between "0001" and "9999".  "0000" shall not be used. •  •  These four digits are referred to as File number.
•  Files with the same file number stored in the same DCF directory are considered to be object component files as defined in 3.2.2.

The Design Rule allows for 4-digit file numbers.  
Other manufacturers use 4-digit file numbers.
Why does DJI use 3-digit file numbers?
2017-10-19
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Geebax
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Labroides Posted at 2017-10-19 17:48
The maximum is limited to 0999 due to the Design Rule for Camera File System.

I wonder how it can be that other camera manufacturers have their file system go from 0001-9999.

'Why does DJI use 3-digit file numbers?'

Interestingly, the Wiki article notes that Panasonic roll over their numbers at 999 as well.
2017-10-19
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