Flac - Sep 2022 - Copying ID3 metadata when encoding with flac command-line tool

Hi,

I want to convert music purchased as AIFF to FLAC.? The AIFF files are 
coming with full metadata & artwork in an ID3v2.4 tag and I would like 
this transferred into a FLAC tag in the destination file.

I had assumed the flac command-line tool would automatically copy the 
ID3 metadata but it doesn't.? I have tried the --keep-foreign-metadata 
option, and while this does then include the ID3 tag within the FLAC 
file, it's not useable since most software expects the data in a FLAC tag.

ffmpeg seems to copy the metadata (apart from converting jpeg covers to 
png at 10x the size), but I feel more comfortable using the reference 
libFLAC rather than Lavf, so would prefer to use the flac command-line 
tool if possible.

Is there a way to achieve metadata data transfer with this?

Thanks,
Seb

Op ma 5 sep. 2022 om 09:51 schreef Seb Francis <seb at burnit.co.uk>:
> ffmpeg seems to copy the metadata (apart from converting jpeg covers to
> png at 10x the size), but I feel more comfortable using the reference
> libFLAC rather than Lavf, so would prefer to use the flac command-line
> tool if possible.
>
> Is there a way to achieve metadata data transfer with this?
>

I see now I did not hit "reply to all", so I'm sending this again
so the
mailing list receives it too. Sorry for the inconvenience

---------

No, the flac command line utility does not interpret ID3 data in any way,
as you've noticed.

What you could do is first encode with ffmpeg and then re-encode that FLAC
file with the flac command line program. In my opinion there is no reason
to feel uncomfortable using the ffmpeg FLAC encoder though.

Kind regards, Martijn van Beurden

-----------

By the way, concerning the issue of not having ffmpeg convert the albumart,
maybe try adding -c:v copy to the command just before the output file. So,
ffmpeg -i file.aiff -c:v copy file.flac

If you want to re-encode that file with flac use either flac file.flac -o
otherfile.flac or flac -f file.flac
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