Permalink
Switch branches/tags
Nothing to show
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
executable file 24 lines (16 sloc) 503 Bytes
#!/usr/bin/env bash
# ffmono: Convert stereo audio in the input to mono in the output.
# Comes in handy for badly mastered input (e.g., left channel only).
set -eo pipefail
function help {
echo "Usage: ffmono <input> <output>"
exit
}
function installed {
cmd=$(command -v "${1}")
[[ -n "${cmd}" ]] && [[ -f "${cmd}" ]]
return ${?}
}
[[ $# -eq 2 && -f $1 && ! -f $2 ]] || help
installed ffmpeg || { >&2 echo "Missing ffmpeg."; exit 1; }
ffmpeg -i "${1}" -c:v copy -ac 1 "${2}"