Tag: transcoding
Re-encoding MP3 files using LAME
by Mostafa on Jun.06, 2008, under How To ..., Linux, Software
I have some MP3 files encoded at a constant bitrate of 320kbps that my phone seems to have trouble playing smoothly. So, I looked into LAME.
The files I had were named using the following scheme:
01 - Title of track 01.mp3 02 - Title of track 02.mp3 ...
I used the BASH for-loop construct to process the files:
$ for A in *.mp3;\ # Process one mp3 at a time do B=${A%.mp3};\ # Extract track number and title C=${B#?? -};\ # Extract the title D=${B%% - *};\ # Extract the track number lame --vbr-new -V0 -q0\ # Variable-bitrate, high-quality --mp3input\ # Inputs are MP3 files --tt "$C"\ # ID3v2 tags: title --ta 'Artist Name'\ # ID3v2 tags: artist --tl 'Album Title'\ # ID3v2 tags: album --ty 2007\ # ID3v2 tags: year --tn "$D"\ # ID3v2 tags: track no. --tg 'GENRE'\ # ID3v2 tags: genre "$A" processed/"$A";\ # Keep filename and save in ./processed/ done
Since no bit-rate bounds are explicitly provided, the re-encoded files can contain anything between 32kbps and 320kbps. The LAME man-page provides an extensive list of options and their meanings.