如何导出照片正确的拍摄时间

在备份几年前的旧照片到 iCloud 时，发现导入照片在 iCloud 上的时间线有误，显示为照片的导入时间，而非照片的拍摄时间。 照片在拍摄时，有一些元信息存储在 Exif 中，包括拍摄时间、拍摄时间等。在导入 iCloud 时，希望根据照片的拍摄时间进行显示，这样在看到照片时，能够回忆起拍摄时的场景。

安装 jhead

jhead 是一个可以编辑图片元信息到命令行工具。

Jhead is a command line driven program for manipulating the non-image parts of Exif flavour JPEG files that most digital cameras produce.

brew install jhead

Things jhead can extract from an Exif jpeg file

• Time and date picture was taken
• Camera make and model
• Integral low-res Exif thumbnail
• Shutter speed
• Camera F-stop number
• Flash used (yes/no)
• Distance camera was focused at
• Focal length and calculate 35 mm equivalent focal length
• Image resolution
• GPS info, if stored in image
• IPTC header
• XMP data

Things jhead can modify in an exif jpeg file

• Up-right images according to rotation tag using jpegtran
• Set or relative adjust internal exif timestamps
• Fix date / time offsets in large batches of images
• Re-name or date stamp files according to exif timestamp
• Transfer exif headers between images
• Replace thumbnails inside Exif headers
• Edit jpeg comments (but not the Exif comments)
• Delete exif or comment sections from jpeg images
• Create new minimal exif header containing date and thumbnail

查看照片Exif 信息

jhead 招生信息.jpeg

➜  Downloads jhead 招生信息.jpeg
File name    : 招生信息.jpeg
File size    : 5164623 bytes
File date    : 2023:03:11 16:17:36
Resolution   : 1024 x 12091
JPEG Quality : 100
Comment      : {"data":{"activityName":"","imageEffectId":"","filterId":"","product":"retouch","pictureId":"640AB745-0641-415C-94C3-9F01C11E009A","infoStickerId":"","playld":"","stickerId":"","appversion":"7.2.0","os":"ios"},"source_type":"douyin_beauty_me"}
======= IPTC data: =======

修改照片时间

jhead -ft xxx.jpg

// 也可以对当前文件夹下的所有文件修改
jhead -ft *.jpg

Exif 信息

Exchangeable image file format: 可交换图像文件，记录数码相机照片的元信息，包括属性信息和拍摄数据。

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