On 2 Apr 2011, at 20:00, James Cook wrote:

> On Sat, 2 Apr 2011 16:38:53 +0100, you wrote:
> 
> According to the docs AtomicParsley is "clever" about tagging so
> tagging an mp4 file with USLT shoud result in --lyrics being set.
> So you could just configure the id3v2 tag names and they'll be applied
> to whatever output file you create. No need to double configure for
> mp3 and m4*.

I don't think it works quite like that.  AtomicParsley puts the ID3 frames 
inside ID32 atoms in the MP4 tree.  iTunes ignores them - are there other media 
managers/players that can read those frames?  More esoteric is the fact that 
atomicparsley apparently only writes ID3v2.4 frames.  I would guess that any 
app that could read ID3 frames from MP4 trees would also do ID3v2.4, but I have 
no real clue.

A configuration mechanism is a good idea, but I think it will have be based a 
full mapping of get_iplayer fields -> MP3 frames -> MP4 atoms.  I've done this 
for iTunes, and it's pretty straightforward.  I don't think id3v2 can add 
artwork, but that seems  acceptable unless someone knows of another 
cross-platform ID3v2 command-line tagger that can insert APIC frames.  The 
alternative would be come up with some sort of integrated tagging plugin, but 
I'm not sure it's worth the bother.  I've been using mutagen, so I don't know 
whether the available perl modules are even up to the task.


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