Convert .flac to .mp3 with ffmpeg, keeping all metadata

Question

How can I convert .flac to .mp3 with ffmpeg, keeping all metadata (that is converting Vorbis comment in .flac files to ID3v2 metadata of .mp3)?

Answer 1

The following command keeps high quality on .mp3 (320 kbps), and metadata from .flac file are converted to ID3v2 format, which can be included in .mp3 files:

ffmpeg -i input.flac -ab 320k -map_metadata 0 -id3v2_version 3 output.mp3 

Answer 2

Perfect answer above. I use it together with find to add all FLAC files in a subtree to iTunes with this command

find . -name "*.flac" -exec ffmpeg -i {} -ab 160k -map_metadata 0 -id3v2_version 3 {}.mp3 \; 

To automatically add the resulting files to iTunes, get the iTunes import directory with

find ~/Music/ -name "Automatically Add*" 

result e.g.

/Users/sir/Music//iTunes/iTunes Media/Automatically Add to iTunes.localized 

Then run e.g.

find . -name "*.mp3" -exec mv {} "/Users/sir/Music//iTunes/iTunes Media/Automatically Add to iTunes.localized/" \; 

To automatically add all the converted tracks to iTunes.