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Detect NEF format, the result is image/tiff #624

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wuxiashuangji opened this issue Jan 31, 2024 · 5 comments · May be fixed by #670
Open

Detect NEF format, the result is image/tiff #624

wuxiashuangji opened this issue Jan 31, 2024 · 5 comments · May be fixed by #670

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@wuxiashuangji
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wuxiashuangji commented Jan 31, 2024 •
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NIKON D610, AF-S Nikkor 24-120mm f/4G ED VR

arraybuffer:

0x4D4D002A 00000008 001C00FE 00040000
@wuxiashuangji
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wuxiashuangji commented Jan 31, 2024 •
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NIKON D850, AF-S Nikkor 105mm f/1.4E ED

arraybuffer:

0x49492A00 08000000 1C00FE00 04000100

@wuxiashuangji
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NIKON D3, AF-S Zoom-Nikkor 14-24mm f/2.8G ED

arraybuffer:

0x49492A00 08000000 B00FE000 4000100

@wuxiashuangji
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wuxiashuangji commented Jan 31, 2024 •
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@mceachen Help me, please solve it

@mceachen
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I gave up using this library for mimetype detection of raw image file formats--there are so many variants that getting them all correct is close to impossible. I'm using exiftool-vendored now.

@Borewit Borewit linked a pull request Sep 8, 2024 that will close this issue
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Borewit commented Sep 8, 2024

If someone could give PR #670 a try, that would be great.

npm install https://github.com/sindresorhus/file-type.git#improve-nef-detection

To understand how Nikon identifies the Nikon Electronic Format (NEF), and to test the implementation, providing sample pictures are appreciated.

0x49492A00 08000000 B00FE000 4000100

Please note that this signature is invalid, seems to have 1 byte to many.

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Improve Nikon RAW NEF (Tiff) format detection sindresorhus/file-type
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@mceachen @wuxiashuangji @Borewit