go-exiftool

go-exiftool is a golang library that wraps ExifTool.

ExifTool's purpose is to extract 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

Usage

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
(...)

Changelog

• v1.1.0 : initial release
• v1.1.1
  • add typed getters for filemetadata fields