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README.md
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README.md
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virtplay.sh
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virtplay.sh
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#!/bin/bash
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# Default variables
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RESOLUTION=1920x1080
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FPS=30
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CHANNELS=1
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RATE=44100
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TIMESTAMP=0
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VOLUME=1
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BORDER=true
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LOOPBACK=true
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VIDEO=true
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AUDIO=true
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VIDEODEVICE=/dev/video0
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AUDIODEVICE=/tmp/virtmic
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BUFFERFILE=/tmp/virtplay
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FFMPEGOPTIONS=""
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##################
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# Argument parser
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while [ ! $# == 0 ]; do
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case "$1" in
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-r | --resolution) RESOLUTION=$2
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;;
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-f | --fps) FPS=$2
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;;
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-b | --border) BORDER=$2
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;;
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-l | --loopback) LOOPBACK=$2
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;;
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-ar | --audio-rate) RATE=$2
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;;
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-c | --channels) CHANNELS=$2
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;;
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-ao | --audio-only) VIDEO=false; AUDIO=true
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;;
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-vo | --video-only) VIDEO=true; AUDIO=false
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;;
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-vd | --video-device) VIDEODEVICE=$2
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;;
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-ad | --audio-device) AUDIODEVICE=$2
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;;
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-bf | --buffer-file) BUFFERFILE=$2
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;;
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-t | --timestamp) TIMESTAMP=$2
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;;
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-v | --volume) VOLUME=$2
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;;
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-h | --help | "")
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echo "VirtPlay v3 - Plays a video/audio file through a virtual webcam and microphone"
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echo ""
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echo "Usage: $0 [options] [value] [file]"
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echo ""
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echo "-h, --help | Shows this help statement"
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echo "-r, --resolution [$RESOLUTION] | Changes the output resolution of the virtual webcam"
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echo "-f, --fps [$FPS] | Changes the FPS of the fake webcam"
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echo "-ar, --audio-rate [$RATE] | Changes the audio samping rate of the virtual microphone"
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echo "-c, --channels [$CHANNELS] | Changes the number of audio channels"
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echo "-b, --border [$BORDER] | Enables or disables changing the output's aspect ratio"
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echo "-l, --loopback [$LOOPBACK] | Enables or disables audio loopback"
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echo "-t, --timestamp | Jumps output to timestamp in either seconds or [HH:]MM:SS[.m...]"
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echo "-v, --volume [$VOLUME] | Sets the volume of the virtual microphone where 1 is 100%"
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echo "-ao, --audio-only | Create a virtual microphone only"
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echo "-vo, --video-only | Create a virtual webcam only"
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echo "-vd, --video-device [$VIDEODEVICE] | Changes which video device to output to"
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echo "-ad, --audio-device [$AUDIODEVICE] | Changes the path for the fake audio device"
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echo "-bf, --buffer-file [$BUFFERFILE] | Changes the path of the file that will be used when piping from stdin because bash is stupid"
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exit
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;;
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*)
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if [[ -f $1 ]]; then
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FILE="$1"
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fi
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;;
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esac
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shift
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done
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# Extremely jank stdin because for some reason ffmpeg crashes in this script whenever you pipe shit directly
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if [[ ! $FILE ]]; then
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echo "No file specified! Listening on stdin..."
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FILE="$BUFFERFILE"
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eval cat /dev/stdin > $BUFFERFILE
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fi
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trap ctrl_c INT
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function ctrl_c() {
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# If fake mic is enabled, delete the fake device
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if [[ $AUDIO == true ]]; then
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pactl unload-module module-pipe-source
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# Delete the pipe used for it too
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if [[ -f $AUDIODEVICE ]]; then rm $AUDIODEVICE; fi
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fi
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# Gets rid of the stupid buffer file if it was used
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if [[ $FILE == $BUFFERFILE ]]; then
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eval rm $BUFFERFILE
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fi
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exit
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}
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# If video is both enabled and the input has a video stream, add video stuff to the ffmpeg command
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if [[ $VIDEO == true ]] && ffprobe -i "$FILE" -show_streams -select_streams v -loglevel error | grep STREAM 2>&1 >/dev/null; then
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if ! lsmod | grep v4l2loopback; then
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echo "v4l2loopback not loaded! Please run 'modprobe v4l2loopback' and try again."
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exit 1
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fi
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FFMPEGOPTIONS+=" -map 0:v -vsync -1 -f v4l2 -pix_fmt yuv420p -s $RESOLUTION -r $FPS $VIDEODEVICE "
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fi
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# If audio is enabled and the input has an audio stream, do some pulse wizardry and add it to ffmpeg
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if [[ $AUDIO == true ]] && ffprobe -i "$FILE" -show_streams -select_streams a -loglevel error | grep STREAM 2>&1 >/dev/null; then
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# Cleanup old pipes
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if [[ -f $AUDIODEVICE ]]; then rm $AUDIODEVICE; fi
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# Creates a fake microphone and sets it as the default
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pactl load-module module-pipe-source source_name=virtmic file=$AUDIODEVICE format=s16le rate=$RATE channels=$CHANNELS
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pactl set-default-source virtmic
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FFMPEGOPTIONS+=" -map 1:a -f s16le -af aresample=async=1000,aresample=$RATE,volume=$VOLUME -ar $RATE -ac $CHANNELS -y $AUDIODEVICE "
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# If loopback is enabled, add even more ffmpeg stuff
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if [[ $LOOPBACK == true ]]; then
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FFMPEGOPTIONS+=" -map 1:a -af aresample=async=1000,aresample=$RATE,volume=$VOLUME -ar $RATE -ac $CHANNELS -buffer_duration 10 -f pulse default "
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fi
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fi
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# So that Discord doesn't cut off the beginning of our high quality meme that we're playing
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sleep 1
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ffmpeg -fflags +genpts -ss $TIMESTAMP -re -err_detect ignore_err -i "$FILE" -ss $TIMESTAMP -re -err_detect ignore_err -i "$FILE" $FFMPEGOPTIONS
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# So that Discord doesn't cut off the end of the dank meme
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sleep 1
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# Cleanup
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ctrl_c
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