POPM tags again

[inhumangeek]

Hi,

I started a thread https://exiftool.org/forum/index.php?topic=6179.msg30499#msg30499 a few months back about POPM tags but I have been having some trouble with my computer and have only just really got around to writing the scripts I wanted to write.

I am using PlayerPro on my Android phone to save ratings information to the music file (m4a - the mp3 files seem to be saving OK). This saves the ratings in the file itself using one of the following systems: MediaMonkey, WinAmp, or Windows Media Player (http://www.aplayerpro.com/faq.html under "How do I import/export my music stats).

I am trying to write a script to extract the ratings that PlayerPro adds to the file. PlayerPro is definitely changing the files (new file modification date) but using exiftool I cannot find the part of the file that the new rating is being saved in (using exiftool FILE). I don't think the rating is being saved in the popularimeter section, it must be being saved elsewhere.

So, my question is, are there any tags which exiftool cannot see?
Thanks.

[Phil Harvey]

If you use the -u option you should see all unknown tags.  If the information is stored in one of them, please let me know and send me a sample (philharvey66 at gmail.com), and I'll add support for this tag.

- Phil

[inhumangeek]

Many thanks for the reply. Using this I compared the results before and after changing the rating, and the only fields which changed (apart from the timestamp ones) were one called "Unknown rate" and one called "Free":

Before:

Code Select Expand


Unknown rate                    : (Binary data 2 bytes, use -b option to extract)
Free                            : (Binary data 2014 bytes, use -b option to extract)


After:

Code Select Expand


Unknown rate                    : (Binary data 3 bytes, use -b option to extract)
Free                            : (Binary data 2013 bytes, use -b option to extract)


The files are holding the data somewhere, as when I re-read them in to PlayerPro they pull out the correct ratings, so if these are the only fields which are changing then I assume the information must be in there somewhere.

Thanks again.

[Phil Harvey]

What version of ExifTool are you using?  The current version should decode the 'rate' atom if it is stored in the right location.

- Phil

[inhumangeek]

Brilliant, updated to current version and rating percent is working perfectly (for some reason apt-get thought that 9.69 was the latest).

Many thanks.