61 lines
1.8 KiB
Plaintext
61 lines
1.8 KiB
Plaintext
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#!/bin/bash
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# as per https://www.pantz.org/software/alsa/recording_sound_from_your_web_browser_using_linux.html
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# Get pulseaudio monitor sink monitor device then pipe it to
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# sox to record wav, lame to encode to mp3, or flac to encode flac
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FILENAME="$1"
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STOPTIME="$2"
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# Encoding options for lame and flac.
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LAMEOPTIONS="--preset cbr 192 -s 44.1"
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FLACOPTIONS="--force-raw-format --endian=little --channels=2 --sample-rate=44100 --sign=signed --bps=16 -f"
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if [ -z "$FILENAME" ]; then
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echo -e "* PulseAudioRecorder wrapper *
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Usage: $0 </path/to/output>.{flac,wav,mp3} [seconds]
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where \"seconds\" argument is a positive integer and it's optional" >&2
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exit 1
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fi
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# Get sink monitor:
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MONITOR=$(pactl list | egrep -A2 '^(\*\*\* )?Source #' | \
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grep 'Name: .*\.monitor$' | awk '{print $NF}' | tail -n1)
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echo "set-source-mute ${MONITOR} false" | pacmd >/dev/null
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# Record it raw, and pipe to lame for an mp3
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echo "Recording to $FILENAME ..."
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if [[ $FILENAME =~ .mp3$ ]]; then
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if [ -z $STOPTIME ]; then
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parec -d $MONITOR | lame $LAMEOPTIONS -r - $FILENAME
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else
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echo -e "\nStopping in $STOPTIME seconds"
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parec -d $MONITOR | lame $LAMEOPTIONS -r - $FILENAME 2>&1 &
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SPID=$!
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sleep $STOPTIME
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kill -9 $SPID
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fi
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fi
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# Note: wav has a limit of about 6.5hrs using 44k 16bit.
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if [[ $FILENAME =~ .wav$ ]]; then
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if [ -z $STOPTIME ]; then
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parec -d "$MONITOR" | sox -t raw -r 44k -sLb 16 -c 2 - "$FILENAME"
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else
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echo -e "\nStopping in $STOPTIME seconds"
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parec -d "$MONITOR" | sox -t raw -r 44k -sLb 16 -c 2 - "$FILENAME" trim 0 $STOPTIME
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fi
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fi
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if [[ $FILENAME =~ .flac$ ]]; then
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if [ -z $STOPTIME ]; then
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parec -d "$MONITOR" | flac - $FLACOPTIONS -o $FILENAME
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else
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echo -e "\nStopping in $STOPTIME seconds"
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parec -d $MONITOR | flac - $FLACOPTIONS -o $FILENAME 2>&1 &
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SPID=$!
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sleep $STOPTIME
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kill -9 $SPID
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fi
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fi
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