Grouping tag not working for tagnavi_custom.config

[philip123]

Hi,

I am trying to use the grouping tag in a custom tagnavi_custom.config file but the values that I see is the title tag.

So if I have

#! rockbox/tagbrowser/2.0
%format "fmt_title_grouping"       "%s - %s - %s" grouping artist title

%menu_start "custom" "Database"
"Grouping"   -> grouping   -> title = "fmt_title_grouping"

I see the following: title - artist - title
So it would seem something is wrong, the grouping tag returns the same values as the title tag.

I am running rockbox 3.4 on Ipod 5.5 80G.

Can anyone else confirm that the grouping tag is not working as expected.

[roolku]

Hm. Works for me as expected. Please make sure the files actually have a grouping tag as otherwise the title tag is used instead. Also if you have added the grouping tags recently the database may not be up-to-date? Maybe you can provide an affected file for testing?

[philip123]

Hi,

I have checked that the mp3 files have the grouping tag, and I have also completely re-initialised the database by deleting it first.

I have found that this works correctly:

#! rockbox/tagbrowser/2.0


%format "fmt_title2"       "%s - %s - %s" grouping artist title

# Define the title of the main menu
%menu_start "custom" "Database"
"Artist(Grouping Sok-Old-Art)"   -> grouping ? grouping @ "Something1|Something2"  -> title = "fmt_title2"

But this:
"Artist(Grouping)"   -> grouping -> title = "fmt_title2"
doesn't work.

It displays a long list of tracks and if I click on one I see the format: title - artist - title?

Am I missing something?

[roolku]

It displays a long list of tracks and if I click on one I see the format: title - artist - title?

Could you confirm that you really mean what you say here? When you select Artist(Grouping) you get "<All tracks>", "<Random>"  and a list of track names ? So it is not only affecting the formatting but the filter as well?

This really points to missing or not correctly read grouping tags. When you select a track from the list to play it and look at its "Track Info", does it list the grouping under [work]?

[philip123]

Hi,

Sorry I now realise what you meant for missing grouping tags, as not all my mp3's have grouping tags, only about a third.
So for all mp3's that don't have a grouping tag, the title is used instead.
Is there a way to prevent this from happening, so that for all mp3's where the grouping tag is not set they should just be ignored, or a grouping of "" should be used and not the title?

This is how I saw it now:
I have also found that if I use this:
"Grouping (new)"   -> grouping ? grouping ~ "new" -> title = "fmt_title2"

I get back the mp3's that either has the letters "new" in the grouping field OR in the title if they don't have a grouping field.

So if I click on Grouping (new) I see:
<All tracks>
<Random>
a-new -> If I click on this I get a number of mp3's with the grouping tag that is a-new, this is fine. (Looks like this: a-new - Coldplay - Life in Technicolor, which is correct!)

I knew I loved you -> If I click on this I get two songs with the title "I knew I loved you"
(looks like this: I knew I loved you - Savage Garden - I knew I loved you, which is not what I expected, the first field which is the grouping tag is displaying the title of the mp3, but the tag is empty in the mp3.)

[roolku]

So for all mp3's that don't have a grouping tag, the title is used instead.
Is there a way to prevent this from happening, so that for all mp3's where the grouping tag is not set they should just be ignored, or a grouping of "" should be used and not the title?

This was a design decision when the feature was introduced: http://www.rockbox.org/tracker/task/7362 

I can see the an advantage in both ways but since I don't use the tag I don't have a strong opinion. Maybe its worth an opinion poll?

As a workaround you could tag all the non-tagged ones with a special tag and exclude this in a condition. Or if (for example) only your classical tracks use grouping you can use Genre in the condition.

[philip123]

Hi,
Thanks but it won't be a very nice work-around for me to tag all the tracks that don't have tags. I use a couple of special custom fields in Mediamonkey, custom 1, custom 2, custom 3, custom 4, custom 5.

I am trying to get some of that information into rockbox because I use it to build my playlists.

I need to get the info from custom 1 into rockbox, so my option is to copy it to the grouping or the comment field. But I don't want to use the comment field because it already contains some information.

[Llorean]

The grouping tags can't really work properly if they don't fall back to the standard tag when not present - otherwise they'd require all files contain both tags even when they are identical (and tagnavis designed for grouping could not work well with files not tagged for it).

[philip123]

Thanks for explaining it. I understand. I will make use of another field for my purposes.

I am just wondering, would it be possible at all to add support for the custom mp3 tags that mediamonkey uses.
For instance: custom 1, custom 2 and custom 3?

Update:
I have now tried to use the comment field.
It is working more-or-less but I am seeing some problems.

The comment field sometimes has values in from other fields when the comment field is empty.