如何使用Exiftool在目录中的所有图像中添加subecdateTimeRiginal？
如果我使用以下命令，则会获取警告：没有可写的标签设置
exiftool '-subsecdatetimeoriginal+<0:0:0${filesequence;$_*=0.500}' -overwrite_original ./images
，如果我这样做：
exiftool '-datetimeoriginal+<<0:0:0${filesequence;$_*=0.500}' -overwrite_original ./images
这是正确更改日期和时间部分，但不更新 <代码> suptectimeoriginal
因此，如果第一个图像具有subsectimeoriginal = 100，那么所有图像都具有相同的值。
If i use below command then i get Warning: No writable tags set
exiftool '-subsecdatetimeoriginal+<0:0:0${filesequence;$_*=0.500}' -overwrite_original ./images
and if i do:
exiftool '-datetimeoriginal+<<0:0:0${filesequence;$_*=0.500}' -overwrite_original ./images
This is changing the date and time part correctly but not updating the millisecond part for SubSecTimeOriginal
so if first image has SubSecTimeOriginal=100 then all images have same value when it should all be different.
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subsecdateTimeoriginal标签不是实际嵌入文件中的标签，而是复合标签 exiftool在阅读/写作时即时创建。此标签不能移动，不幸的是，除非您添加-v3（-verbose3）选项，在其中说综合：subecdateTimeoriginal不可移动。解决方法是使用XMP日期/时间邮票标签，因为它们可以包含全日制值（子卡和时区），这与EXIF时间标签分为三个单独的标签不同。
XMP：DateTimeRiginal将是最合适的标签。如果尚未设置，您将首先从
subsecdateTimeoriginal复制时间。然后，您将运行命令来增加时间戳。最后，您将复制XMP：dateTimeoriginal返回subsecdatementemineoriginal。示例命令和输出：
The
SubSecDateTimeOriginaltag is not a tag that is actually embedded in the file, but is instead a Composite tag that exiftool creates on the fly while reading/writing. This tag is cannot be shifted and unfortunately, there isn't a warning about this unless you add the-v3(-verbose3) option, where it will sayComposite:SubSecDateTimeOriginal is not shiftable.A workaround would be to use an XMP date/time stamp tag, as they can contain the full time value (subsecond and time zone), unlike EXIF time tags which are split into three separate tags.
XMP:DateTimeOriginalwould be the most suitable tag.If it's not already set, you would first copy the time from
SubSecDateTimeOriginal. Then you would run your command to increment the time stamp. Finally, you would copy theXMP:DateTimeOriginalback intoSubSecDateTimeOriginal.Example commands and output: