MacOS shell scripts for converting to M4A or getting info on M4As and/or WAV files.
Conversion defaults to 128kbps with the same channel configuration as the inputs, to a folder named M4A in the location the script was executed. These settings can be overriden with the -b or --bitrate and -c or --channels flags, or altered in the code.
Information gathering parses the output of afinfo and outputs the bitrate and channel configuration of each file.
Built-in MacOS utilities afconvert and afinfo.
Converts individual files or whole folders.
m4aconvert.sh . # to convert whole current folder with default values
m4aconvert.sh 0.wav 1.wav # to convert individual files with default values
m4aconvert.sh --bitrate 256 --channels 1 WAV # to convert all files inside WAV/ folder at 256kbps mono
m4aconvert.sh -b 96 -c 2 Docs # to convert all files inside Docs/ folder at 96kbps stereo
m4aconvert.sh -o converted . # to convert all files inside the current folder and put the new files into a folder named "converted/" Outputs bitrate and channel configuration of individual files or whole folders.
m4ainfo.sh . # to show bit rate and channel config of all files in current folder
m4ainfo.sh 8.m4a 9.wav # to show bit rate and channel config of specific files
m4ainfo.sh help # to show this infoIncorporates m4ainfo.sh and m4aconvert.sh into a single script, which can be accessed by subcommands convert or info.
m4amanage.sh convert . # to convert whole folder with default values
m4amanage.sh convert 0.wav 1.wav # to convert individual files with default values
m4amanage.sh convert -b 96 -c 2 WAV # convert all files inside WAV/ folder at 96kbps stereo
m4amanage.sh convert -o converted . # to convert all files inside the current folder and put the new files into a folder named "converted/"
m4amanage.sh info 8.m4a 9.wav # to show bit rate and channel config, no conversion
m4amanage.sh help # to show MANUAL