get-tracks/README.md

# Get Tracks

`get-tracks.sh` allows you to easily extract music tracks from a file with multiple songs, like a CD-in-a-file.

# Required applications

`get-tracks.sh` is a simple shell script based around `ffmpeg`, using `xxd` and `awk`.

* ffmpeg
* xxd (with '-r' and '-p' options)
* awk

It was tested on both OpenBSD and Linux.

# Usage

Download a CD and the starting time of each track in a file, and you're good to go.

```Bash
get-tracks.sh <audio-file> <time-file>

# Example
get-track.sh doom-eternal.opus doom-eternal.txt
```


*audio-file* can be in any format understood by `ffmpeg`.

The *time-file* must have this format:

```
0:00 intro
2:20 First song
3:18 Awesome song
```

# Environment variables

* **SIMULATION** [empty or not]\
    do not invoke ffmpeg
* **NONUMBER** [empty or 1]\
    do not write song numbers
* **FORMAT** [mp3,ogg,opus,…]\
    see the ffmpeg documentation for the output formats available
* **SEPARATOR** [separator] (default: ' - ')\
    separator between number and name\
    example with SEPARATOR='_': 01_intro.opus 02_blah.opus…
* **HEADERS** [empty or 1]\
    print environment parameters (verbosity, simulation, etc.)
* **VERBOSITY** [0-3] (default: 1)\
    0: no output except errors from ffmpeg\
    1: simple indications on the current track being extracted\
    2: print actual ffmpeg commands the script currently runs

# More

Run `get-track.sh` without arguments.