whisper.cpp/examples/twitch.sh

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#!/bin/bash
#
# Transcribe twitch.tv livestream by feeding audio input to whisper.cpp at regular intervals
# Thanks to @keyehzy
# ref: https://github.com/ggerganov/whisper.cpp/issues/209
#
# The script currently depends on the third-party tool "streamlink"
# On Mac OS, you can install it via "brew install streamlink"
#
set -eo pipefail
step=10
model=base.en
threads=4
help()
{
echo "Example program for captioning a livestream from twitch.tv."
echo
echo "Usage: ./twitch.sh -s [step] -m [model] -t [threads] [url]"
echo "options:"
echo "-s Step in seconds (default is $step)."
2024-10-01 14:57:06 +02:00
echo "-m Choose model, options are: 'tiny.en' 'tiny' 'base.en' 'base' 'small.en' 'small' 'medium.en' 'medium' 'large-v1' 'large-v2' 'large-v3' 'large-v3-turbo' (default is '$model')."
echo "-t Number of threads to use."
echo "-h Print this help page."
echo
}
check_requirements()
{
if ! command -v ./main &>/dev/null; then
echo "whisper.cpp main executable is required (make)"
exit 1
fi
if ! command -v streamlink &>/dev/null; then
echo "streamlink is required (https://streamlink.github.io)"
exit 1
fi
if ! command -v ffmpeg &>/dev/null; then
echo "ffmpeg is required (https://ffmpeg.org)"
exit 1
fi
}
check_requirements
while getopts ":s:m:t:h" option; do
case $option in
s)
step=$OPTARG;;
m)
model=$OPTARG;;
t)
threads=$OPTARG;;
h)
help
exit;;
\?)
help
exit;;
esac
done
url=${@:$OPTIND:1}
if [ -z $url ]; then
help
exit
fi
echo "Piping from streamlink url=$url model=$model step=$step threads=$threads"
streamlink $url best -O 2>/dev/null | ffmpeg -loglevel quiet -i - -y -probesize 32 -y -ar 16000 -ac 1 -acodec pcm_s16le /tmp/whisper-live0.wav &
if [ $? -ne 0 ]; then
printf "error: ffmpeg failed\n"
exit 1
fi
echo "Buffering stream... (this should take $step seconds)"
sleep $(($step))
set +e
echo "Starting..."
i=0
SECONDS=0
while true
do
err=1
while [ $err -ne 0 ]; do
if [ $i -gt 0 ]; then
ffmpeg -loglevel quiet -v error -noaccurate_seek -i /tmp/whisper-live0.wav -y -ss $(($i*$step-1)).5 -t $step -c copy /tmp/whisper-live.wav 2> /tmp/whisper-live.err
else
ffmpeg -loglevel quiet -v error -noaccurate_seek -i /tmp/whisper-live0.wav -y -ss $(($i*$step)) -t $step -c copy /tmp/whisper-live.wav 2> /tmp/whisper-live.err
fi
err=$(cat /tmp/whisper-live.err | wc -l)
done
./main -t $threads -m ./models/ggml-$model.bin -f /tmp/whisper-live.wav --no-timestamps -otxt 2> /tmp/whispererr | tail -n 1
while [ $SECONDS -lt $((($i+1)*$step)) ]; do
sleep 1
done
((i=i+1))
done