Warning: Tag 'yrrc' is not defined

[foremtehan]

I wanted to add some tags listed here but some of them not working, for example (Year tag):

Code Select Expand

$ exiftool -yrrc=2011 file.m4a -overwrite_original
result: "Warning: Tag 'yrrc' is not defined
Nothing to do."

I tried to replace yrrc with year but the output file does not have year tag.

Also what is the suitable tag for 'user defined tag'? (same thing in id3v2 which is TXXX), Thanks.

[StarGeek]

You write to the tag name, not the id

Code Select Expand

C:\>exiftool -P -overwrite_original -year=1999 Y:\!temp\Test.m4a
    1 image files updated

C:\>exiftool -G1 -a -s -year Y:\!temp\Test.m4a
[ItemList]      Year                            : 1999

I tried to replace yrrc with year but the output file does not have year tag.

Did you check with exiftool or some other program.  Check with exiftool first, as I did above.  If the file shows that the Year tag exists, then this would be FAQ #3.  You need to figure out what tag that other program is actually reading.

Also note that there are three separate Year tags.  It may be that your other program is looking for the tag in a different group

Code Select Expand

C:\>exiftool -P -overwrite_original -ItemList:year=1999 -Keys:year=1999 -Userdata:year=1999 Y:\!temp\Test.m4a
    1 image files updated

C:\>exiftool -G1 -a -s -year Y:\!temp\Test.m4a
[ItemList]      Year                            : 1999
[UserData]      Year                            : 1999
[Keys]          Year                            : 1999

[foremtehan]

Yeah, That would work.

The MediaInfo app shows it correctly:

Code Select Expand

Released date               : 1999
Writing application         : Lavf59.27.100
yrrc                        : 1999
com.apple.quicktime.year    : 1999

But the app i was working on is Edit ID Tag from dbpoweramp which still does not show the year:

https://i.imgur.com/9ABbeAX.jpg

Update: The AIMP app not recognize the year too

Update2: Looks like the tag i'm looking for is ContentCreateDate, now i got:
Warning: Invalid date/time (use YYYY:mm:dd HH:MM:SS[.ss][+/-HH:MM|Z]) in ItemList:ContentCreateDate (PrintConvInv)
(

[Phil Harvey]

Add -n to the command or use -itemlist:contentcreatedate#=1999

- Phil

[foremtehan]

Thanks Phil.