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Programming language: Go
License: GNU General Public License v3.0 only
Tags: Files    
Latest version: v1.3.2

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README

go-exiftool

Mentioned in Awesome Go Build Status go report card GoDoc codecov

go-exiftool is a golang library that wraps ExifTool.

ExifTool's purpose is to extract and update as much metadata as possible (EXIF, IPTC, XMP, GPS, ...) from a lots of differents file types (Office documents, pictures, movies, PDF, ...).

go-exiftool uses ExifTool's stay_open feature to optimize performance.

Requirements

go-exiftool needs ExifTool to be installed.

  • On Debian : sudo apt-get install exiftool

By default, go-exiftool binary will look for exiftool binary in $PATH, but another location can be specified (see SetExiftoolBinaryPath functional option).

Usage

Metadata extraction

et, err := exiftool.NewExiftool()
if err != nil {
    fmt.Printf("Error when intializing: %v\n", err)
    return
}
defer et.Close()

fileInfos := et.ExtractMetadata("testdata/20190404_131804.jpg")

for _, fileInfo := range fileInfos {
    if fileInfo.Err != nil {
        fmt.Printf("Error concerning %v: %v\n", fileInfo.File, fileInfo.Err)
        continue
    }

    for k, v := range fileInfo.Fields {
        fmt.Printf("[%v] %v\n", k, v)
    }
}

Output :

[FOV] 69.4 deg
[Orientation] Rotate 90 CW
[ColorSpace] sRGB
[Compression] JPEG (old-style)
[YCbCrSubSampling] YCbCr4:2:2 (2 1)
[Aperture] 1.7
[ColorComponents] 3
[SubSecCreateDate] 2019:04:04 13:18:03.0937
[FileSize] 26 kB
[FileAccessDate] 2019:05:17 22:44:26+02:00
[DateTimeOriginal] 2019:04:04 13:18:03
[CreateDate] 2019:04:04 13:18:03
(...)

Metadata update

See [example function ExampleExiftool_Write in exiftool_sample_test.go](exiftool_sample_test.go)

Changelog