I can convert FLAC files to m4as with the following command line, piping ffmpeg output to fdkacc, but the FLAC's ID3 tags get lost in the process.
ffmpeg.exe -i input.flac -f wav - | fdkaac.exe -I -p 29 -m 0 -G 2 - -o "%~n1.m4a"
What do I add to this command line to transfer the tags to the new m4a file -- hopefully without resorting to an intermediate text file?
I don't know if it's possible with ffmpeg, but I believe Tag (http://wiki.hydrogenaud.io/index.php?title=Tag_(tagger)) can transfer tags from one file to the other.
I can convert FLAC files to m4as with the following command line, piping ffmpeg output to fdkacc, but the FLAC's ID3 tags get lost in the process.
ffmpeg.exe -i input.flac -f wav - | fdkaac.exe -I -p 29 -m 0 -G 2 - -o "%~n1.m4a"
Try -f caf instead of -f wav. fdkaac is able to read only CAF tags.
That did it. Thank you.