Feature request: recognize newer image file formats

[litoj]

Hello, since nowadays there is a rise of different compression standards for image files, it would be very useful, if recovering image files other than basic jpg was possible.

This is just a list of formats I have found missing:

• .avif (AV1 Image Format)
• .heic / .heif (Apple High Efficiency Image Format/Codec)
• .jxl (JPEG XL)
• .dng (common raw file standard)

[cgsecurity]

Have you check that PhotoRec was really unable to recover them ? You can try fidentify and/or https://www.cgsecurity.org/photorec/ Please provide some file samples of each type not detected by PhotoRec.

[litoj]

It is true my selection was based just on formats not described in the file options selection.

After looking through some of the found files, I noticed .avif/.heif is detected and put under the .mov extension.

[litoj]

Here is an example .jxl file:

Note: I had to upload it as .jpg to be accepted by github

fidentify consideres this file type unknown

[cgsecurity]

JPEG XL codestream: 0xff 0x0a I don't think it's possible to recover jxl without a lot of false positive

[litoj]

I think I found somewhat of a workaround.

I ran photorec with the photorec.sig configured for .jxl as:

jxl 0 0x0000000c4a584c200d0a870a
jxl 0 0xff0a

and then created the following script to continually check all newly found image files and ensure that the files are actually readable as images:

filter.sh

then with ffmpeg -i <image>.jxl -c copy <outfile>.jxl I was able to trim down all the valid files to their original size.