How to pipe FLACs to fdkaac in ffmpeg and keep tags?
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?