add tag if it does not already exist/have value

[shiregator]

Thans again StarGeek, that works great!

Code Select Expand


-echo
**START** 883db520-a093-4e23-b834-fed5dcbf6f1d
-overwrite_original
-ver
-wm
cg
-tagsFromFile
src.jpg
dst.jpg
-execute
-echo
**STOP** 883db520-a093-4e23-b834-fed5dcbf6f1d
-execute
-echo
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

-execute

-stay_open
false

[shiregator]

-wm cg does not seem to work for .mp4 files (the file remains unchanged).  If I remove the write mode (-wm cg) it does write the EXIF tags to the target .mp4 file properly. 

Is this expected/known behavior?  I've tried version 11.20.

Thanks!

[StarGeek]

What tag are you trying to write, because it's very rare for a mp4 to have an EXIF tag.

[shiregator]

Hi StarGeek,

Maybe I shouldn't have used the term "EXIF" then (I thought that was just the general group for all tags)?  I'm just trying to copy all the missing tags from "file1.mp4" to "file1_edited.mp4".  When I use my video editor it drops some of the tags, so I just want to add them back after editing. 

Thank you.

[StarGeek]

All Exif is metadata, but not all metadata is Exif.  See the Tag Names page.

Overall, exiftool has limited ability to write to video files.  Mostly just XMP metadata and a few Quicktime tags.  From what Phil has said, video metadata is poorly documented.

What tags are you trying to copy over?

[shiregator]

Every tag that exists in "file1.mp4" that does not exist in "file1_edit.mp4".

Code Select Expand


-echo
**START** 883db520-a093-4e23-b834-fed5dcbf6f1d
-overwrite_original
-ver
-wm
cg
-tagsFromFile
file1.mp4
file1_edit.mp4
-execute
-echo
**STOP** 883db520-a093-4e23-b834-fed5dcbf6f1d
-execute
-echo
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------