forked from extern/whisper.cpp
70 lines
1.8 KiB
Bash
Executable File
70 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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# Transcribe audio livestream by feeding ffmpeg output to whisper.cpp at regular intervals
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# Idea by @semiformal-net
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# ref: https://github.com/ggerganov/whisper.cpp/issues/185
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#
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# TODO:
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# - Currently, there is a gap between sequential chunks, so some of the words are dropped. Need to figure out a
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# way to produce a continuous stream of audio chunks.
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#
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url="http://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/hls/nonuk/sbr_low/ak/bbc_world_service.m3u8"
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step_ms=10000
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model="base.en"
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if [ -z "$1" ]; then
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echo "Usage: $0 stream_url [step_ms] [model]"
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echo ""
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echo " Example:"
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echo " $0 $url $step_ms $model"
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echo ""
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echo "No url specified, using default: $url"
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else
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url="$1"
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fi
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if [ -n "$2" ]; then
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step_ms="$2"
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fi
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if [ -n "$3" ]; then
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model="$3"
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fi
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# Whisper models
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models=( "tiny.en" "tiny" "base.en" "base" "small.en" "small" "medium.en" "medium" "large" )
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# list available models
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function list_models {
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printf "\n"
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printf " Available models:"
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for model in "${models[@]}"; do
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printf " $model"
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done
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printf "\n\n"
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}
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if [[ ! " ${models[@]} " =~ " ${model} " ]]; then
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printf "Invalid model: $model\n"
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list_models
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exit 1
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fi
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running=1
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trap "running=0" SIGINT SIGTERM
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printf "[+] Transcribing stream with model '$model', step_ms $step_ms (press Ctrl+C to stop):\n\n"
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while [ $running -eq 1 ]; do
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ffmpeg -y -re -probesize 32 -i $url -ar 16000 -ac 1 -c:a pcm_s16le -t ${step_ms}ms /tmp/whisper-live0.wav > /dev/null 2> /tmp/whisper-live.err
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if [ $? -ne 0 ]; then
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printf "Error: ffmpeg failed to capture audio stream\n"
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exit 1
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fi
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mv /tmp/whisper-live0.wav /tmp/whisper-live.wav
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./main -t 8 -m ./models/ggml-small.en.bin -f /tmp/whisper-live.wav --no-timestamps -otxt 2> /tmp/whispererr | tail -n 1 &
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done
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