[Enhancement] Parse ID3 tags from podcast episodes

[advplyr]

    Sure. There's no tagging standard, really, but I'll just share what I came up with. I'm using MP3Tag, so most of these are the unified tags. There might be some that don't exist in ID3v2.3, but do in ID3v2.4 or MP4 - or vice versa.

• album, albumsort: Podcast title
• artist: Hosts plus guests. I did this specifically for Plex so I could see the guests in the track view. If this should be implemented in ABS, artist should only be the host, with maybe composer as guests (similar to composer being used as the narrator tag for audiobooks).
• artistsort, albumartist, albumartistsort: Hosts
• comment, unsyncedlyrics: Episode description
• composer, guests: Guests, if applicable. guests is not a real tag (and should be ignored), I created and misused it for automatic file naming options. I think performer could be used as well.
• contentgroup: Kind of like a subtitle. It's a residue from an audiobook tagging standard that I continued with this. Not really necessary, really.
• discnumber: Season, if applicable
• genre: Well, the genres
• language: Language
• movementname, series: Podcast title
• movement, series-part, track: episode number
• origyear: publication year
• podcast: I think this is an iTunes specific tag that's always set to 1
• publisher: podcast studio
• showmovement: this is part of the movement tag, not sure which software uses that.
• title: episode title
• year: publication date. I use yyyy-mm-dd specifically for Plex, in case it ever supports that on a track level. The whole publication date thing can be juggled around as there are a handful of tags that might be valid: year, date, releasedate, ...

Season and episode number together with series-part can be tricky. But since series-part can be a string, and not only a number, one might also do a "season.episode" series-part, IMO (like 6.3 for season 6 episode 3=.

Originally posted by @JakobTischler in #1038 (comment)

[tfranken90]

+1 for this tagging scheme. The most important tags are tracknumber (Episode), discnumber (Season), comment (Description), and date (Publication Date).

[JakobTischler]

Just wanna say I'm very happy to see that you're taking this on.

[JakobTischler]

Just to add a discussion topic, I'd like to talk about a suggestion from the original issue by @tfranken90:

Rather than scanning tags, it would be helpful if ABS could just pickup some basic information from folder structure and file names. For example, my files are named with a pretty conventional SS-EE scheme.

I have to say I somewhat disagree with this. Using directory structure as content / metadata information is bad practice in my opinion. ID3 tags are perfect for directly defining any information you'd like - including season and episode. At the very least, they should take priority over a folder structure/file naming scheme. Maybe even make it a configurable preference, like the already existing Prefer audio metadata setting.

[advplyr]

Added in v2.2.18

Still need to do up the docs on this and there will probably be some kinks to work out

[sizzleweet]

I think that mp3tag is improperly using the year functionality. It's the only application I've found that can add that much data into the year field.

Looking at a file that I have tagged like your example but using exiftool, the year is only shown as a 4 digit value.

[advplyr]

@sizzleweet Abs is using a 4 digit year for the year tag. date and releasedate are getting the full pubDate