Difference between revisions of "Convert FLAC to MP3"
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− | [[Category:Audio/Video | + | [[Category:Audio/Video]] |
− | [[Category:Scripts | + | [[Category:Scripts]] |
− | + | {{Article summary start}} | |
− | + | {{Article summary text|Converting audio formats}} | |
− | + | {{Article summary heading|Related}} | |
+ | {{Article summary wiki|Convert Any To Mp3}} | ||
+ | {{Article summary wiki|Convert any Movie to DVD Video}} | ||
+ | {{Article summary end}} | ||
− | + | Here are a few scripts and tools that facilitate converting FLAC to MP3. | |
+ | |||
+ | ==Introduction== | ||
+ | For more information on LAME switches/settings such as V0, visit the [http://wiki.hydrogenaudio.org/index.php?title=LAME Hydrogenaudio LAME Wiki]. V0 is roughly equivalent to ''--preset extreme'' which results in a variable bitrate usually between 220-260. The audio of a V0 is transparent, meaning one cannot tell the difference between the lossy file and the original source (compact disc/lossless), but yet the file size is a quite reasonable. | ||
− | + | More information on FLAC: [http://wiki.hydrogenaudio.org/index.php?title=Flac FLAC] | |
− | + | ==Scripts== | |
− | + | In these two examples, the FLAC files in a directory are read, decompressed to WAV, and streamed into the MP3 encoder, LAME. Both scripts pass the ID3 tags from the FLAC files to the resulting MP3 files, and encode to MP3 V0. | |
− | + | The original .flac files are not modified and the resulting .mp3s will be in the same directory. All files with extensions not matching {{Ic|*.flac}} in the working directory (.nfo, images, .sfv, etc.) are ignored. | |
− | + | ===With FFmpeg=== | |
+ | |||
+ | Chances are, your system already has {{Ic|ffmpeg}} installed, which brings in the {{Ic|flac}} and {{Ic|lame}} packages. FFmpeg has all the encoding and decoding facilities built in to do the job. | ||
<pre> | <pre> | ||
− | + | #!/bin/bash | |
+ | |||
+ | for f in *.flac; do | ||
+ | ffmpeg -i "$f" -qscale:a 0 "${f[@]/%flac/mp3}" | ||
+ | done | ||
</pre> | </pre> | ||
− | + | ===Without FFmpeg=== | |
+ | |||
+ | If for some reason you have something against ffmpeg, you still need to have {{Ic|flac}} and {{Ic|lame}} installed. Here, the tagging process is more explicit, using the metadata utility that comes with {{Ic|flac}}, and passing the information to {{Ic|lame}} | ||
<pre> | <pre> | ||
− | + | #!/bin/bash | |
− | do | + | for a in *.flac; do |
− | OUTF= | + | # give output correct extension |
+ | OUTF="${a[@]/%flac/mp3}" | ||
− | ARTIST= | + | # get the tags |
− | TITLE= | + | ARTIST=$(metaflac "$a" --show-tag=ARTIST | sed s/.*=//g) |
− | ALBUM= | + | TITLE=$(metaflac "$a" --show-tag=TITLE | sed s/.*=//g) |
− | GENRE= | + | ALBUM=$(metaflac "$a" --show-tag=ALBUM | sed s/.*=//g) |
− | TRACKNUMBER= | + | GENRE=$(metaflac "$a" --show-tag=GENRE | sed s/.*=//g) |
− | DATE= | + | TRACKNUMBER=$(metaflac "$a" --show-tag=TRACKNUMBER | sed s/.*=//g) |
− | + | DATE=$(metaflac "$a" --show-tag=DATE | sed s/.*=//g) | |
− | |||
− | |||
+ | # stream flac into the lame encoder | ||
+ | flac -c -d "$a" | lame -V0 --add-id3v2 --pad-id3v2 --ignore-tag-errors \ | ||
+ | --ta "$ARTIST" --tt "$TITLE" --tl "$ALBUM" --tg "${GENRE:-12}" \ | ||
+ | --tn "${TRACKNUMBER:-0}" --ty "$DATE" - "$OUTF" | ||
done | done | ||
</pre> | </pre> | ||
− | + | ===Usage=== | |
− | |||
− | |||
− | |||
− | |||
− | + | For ease of use, add the script to your {{Ic|PATH}}. Open up a terminal, {{Ic|cd}} to the directory of FLAC files that you wish to convert, and invoke {{Ic|flac2mp3}} (or whatever you named the script). You'll see the verbose decoding/encoding process in the terminal which may take a few moments. Done!!! At this point, it's trivial to {{Ic|mv *.mp3}} all your new MP3s wherever you wish. | |
− | + | A useful extension of the above scripts is to let it recurse into all subdirectories of the working directory. Replace the first line ({{Ic|for .... do}}) with | |
− | |||
− | |||
− | |||
− | |||
<pre> | <pre> | ||
− | + | find -type f -name "*.flac" -print0 | while read -d $'\0' a; do | |
</pre> | </pre> | ||
− | + | ==Packages== | |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | === | ||
− | |||
− | |||
− | + | * {{AUR|whatmp3}} A small Python script that accepts a list of directories containing FLAC files as arguments and converts them to MP3 with the specified options. | |
+ | * {{AUR|flac2all}} Audio converter of FLAC to either Ogg Vorbis or MP3 retaining all tags and metadata | ||
+ | * {{AUR|flac2mp3-bash}} Bash script to convert Flac to Mp3 easily | ||
− | + | ==Related Links== | |
+ | * https://www.xiph.org/flac/ | ||
+ | * https://en.wikipedia.org/wiki/FLAC | ||
+ | * http://lame.sourceforge.net/ |
Revision as of 21:29, 8 July 2013
Template:Article summary start Template:Article summary text Template:Article summary heading Template:Article summary wiki Template:Article summary wiki Template:Article summary end
Here are a few scripts and tools that facilitate converting FLAC to MP3.
Contents
Introduction
For more information on LAME switches/settings such as V0, visit the Hydrogenaudio LAME Wiki. V0 is roughly equivalent to --preset extreme which results in a variable bitrate usually between 220-260. The audio of a V0 is transparent, meaning one cannot tell the difference between the lossy file and the original source (compact disc/lossless), but yet the file size is a quite reasonable.
More information on FLAC: FLAC
Scripts
In these two examples, the FLAC files in a directory are read, decompressed to WAV, and streamed into the MP3 encoder, LAME. Both scripts pass the ID3 tags from the FLAC files to the resulting MP3 files, and encode to MP3 V0.
The original .flac files are not modified and the resulting .mp3s will be in the same directory. All files with extensions not matching *.flac
in the working directory (.nfo, images, .sfv, etc.) are ignored.
With FFmpeg
Chances are, your system already has ffmpeg
installed, which brings in the flac
and lame
packages. FFmpeg has all the encoding and decoding facilities built in to do the job.
#!/bin/bash for f in *.flac; do ffmpeg -i "$f" -qscale:a 0 "${f[@]/%flac/mp3}" done
Without FFmpeg
If for some reason you have something against ffmpeg, you still need to have flac
and lame
installed. Here, the tagging process is more explicit, using the metadata utility that comes with flac
, and passing the information to lame
#!/bin/bash for a in *.flac; do # give output correct extension OUTF="${a[@]/%flac/mp3}" # get the tags ARTIST=$(metaflac "$a" --show-tag=ARTIST | sed s/.*=//g) TITLE=$(metaflac "$a" --show-tag=TITLE | sed s/.*=//g) ALBUM=$(metaflac "$a" --show-tag=ALBUM | sed s/.*=//g) GENRE=$(metaflac "$a" --show-tag=GENRE | sed s/.*=//g) TRACKNUMBER=$(metaflac "$a" --show-tag=TRACKNUMBER | sed s/.*=//g) DATE=$(metaflac "$a" --show-tag=DATE | sed s/.*=//g) # stream flac into the lame encoder flac -c -d "$a" | lame -V0 --add-id3v2 --pad-id3v2 --ignore-tag-errors \ --ta "$ARTIST" --tt "$TITLE" --tl "$ALBUM" --tg "${GENRE:-12}" \ --tn "${TRACKNUMBER:-0}" --ty "$DATE" - "$OUTF" done
Usage
For ease of use, add the script to your PATH
. Open up a terminal, cd
to the directory of FLAC files that you wish to convert, and invoke flac2mp3
(or whatever you named the script). You'll see the verbose decoding/encoding process in the terminal which may take a few moments. Done!!! At this point, it's trivial to mv *.mp3
all your new MP3s wherever you wish.
A useful extension of the above scripts is to let it recurse into all subdirectories of the working directory. Replace the first line (for .... do
) with
find -type f -name "*.flac" -print0 | while read -d $'\0' a; do
Packages
- whatmp3AUR A small Python script that accepts a list of directories containing FLAC files as arguments and converts them to MP3 with the specified options.
- flac2allAUR Audio converter of FLAC to either Ogg Vorbis or MP3 retaining all tags and metadata
- flac2mp3-bashAUR Bash script to convert Flac to Mp3 easily