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Difference between revisions of "Converting audios"
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== Helpers == | == Helpers == | ||
| − | < | + | <source lang="bash"> |
| + | mkdir -p ./new/ # create folder, if not existing (-p) | ||
file="./dir/audio-0a6f36g.flac" # path to .flac file into varible "$file" | file="./dir/audio-0a6f36g.flac" # path to .flac file into varible "$file" | ||
| − | avconv -i "$file" 2>&1 # print out metadata of $file, for some formats only</ | + | avconv -i "$file" 2>&1 # print out metadata of $file, for some formats only</source> |
== Simple batch format conversion == | == Simple batch format conversion == | ||
| − | < | + | <source lang="bash"> |
| + | for file in ./flac/*.flac | ||
do | do | ||
key=$(basename "$file" .flac).mp3 # name of the file minus .flac, plus .mp3 | key=$(basename "$file" .flac).mp3 # name of the file minus .flac, plus .mp3 | ||
lame --abr 24 -m m -h --resample 22.05 "$file" "./new/$key" | lame --abr 24 -m m -h --resample 22.05 "$file" "./new/$key" | ||
| − | done</ | + | done</source> |
== Metadata-based format conversion == | == Metadata-based format conversion == | ||
This example works on SWAC recorder audio files having the <code>SWAC_TEXT</code> metadata field. In this exemple, we assume a folder with file <code>audio-0a6f36g.flac</code> and metadata <code>SWAC_TEXT : 很</code>. | This example works on SWAC recorder audio files having the <code>SWAC_TEXT</code> metadata field. In this exemple, we assume a folder with file <code>audio-0a6f36g.flac</code> and metadata <code>SWAC_TEXT : 很</code>. | ||
| − | < | + | <source lang="bash"> |
| + | for file in ./flac/*.flac | ||
do | do | ||
key=$(avconv -i "$file" 2>&1 | sed -ne 's/.*SWAC_TEXT *: //p') # print metadata, assign SWAC_TEXT's value to variable. | key=$(avconv -i "$file" 2>&1 | sed -ne 's/.*SWAC_TEXT *: //p') # print metadata, assign SWAC_TEXT's value to variable. | ||
lame --abr 24 -m m -h --resample 22.05 "$file" "./new-24k/cmn-$key.mp3" # ex: cmn-很.mp3 (24k abr) | lame --abr 24 -m m -h --resample 22.05 "$file" "./new-24k/cmn-$key.mp3" # ex: cmn-很.mp3 (24k abr) | ||
lame --cbr -b 96 -m m -h --resample 22.05 "$file" "./new-96k/cmn-$key.mp3" # ex: cmn-很.mp3 (96k cbr) | lame --cbr -b 96 -m m -h --resample 22.05 "$file" "./new-96k/cmn-$key.mp3" # ex: cmn-很.mp3 (96k cbr) | ||
| − | done</ | + | done</source> |
Revision as of 14:43, 21 May 2018
How to convert large batch of audios ?
Dependencies
sudo apt-get install lame avconv
man lame # then search for parameters via "/{param}". ex: /-m
Technolecte
cbr: constant bit rate.abr: average bit rate.vbr: variable bit rate. For more, seeman lame.
Helpers
mkdir -p ./new/ # create folder, if not existing (-p)
file="./dir/audio-0a6f36g.flac" # path to .flac file into varible "$file"
avconv -i "$file" 2>&1 # print out metadata of $file, for some formats only
Simple batch format conversion
for file in ./flac/*.flac
do
key=$(basename "$file" .flac).mp3 # name of the file minus .flac, plus .mp3
lame --abr 24 -m m -h --resample 22.05 "$file" "./new/$key"
done
Metadata-based format conversion
This example works on SWAC recorder audio files having the SWAC_TEXT metadata field. In this exemple, we assume a folder with file audio-0a6f36g.flac and metadata SWAC_TEXT : 很.
for file in ./flac/*.flac
do
key=$(avconv -i "$file" 2>&1 | sed -ne 's/.*SWAC_TEXT *: //p') # print metadata, assign SWAC_TEXT's value to variable.
lame --abr 24 -m m -h --resample 22.05 "$file" "./new-24k/cmn-$key.mp3" # ex: cmn-很.mp3 (24k abr)
lame --cbr -b 96 -m m -h --resample 22.05 "$file" "./new-96k/cmn-$key.mp3" # ex: cmn-很.mp3 (96k cbr)
done