94 lines
2.5 KiB
Bash
94 lines
2.5 KiB
Bash
#!/usr/bin/env nix-shell
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#!nix-shell -i bash -p ffmpeg v4l-utils alsa-utils gnome.zenity lxterminal
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set -euo pipefail
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#if [[ -z ${_IS_IN_GUI:-} ]]; then
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# exec lxterminal --command "_IS_IN_GUI=1 $(printf "%q" "$(realpath "$0")")" &
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#fi
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video_devices=()
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audio_devices=()
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tab=$(printf '\t')
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current_name=
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while IFS= read line; do
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if ! [[ $line == "$tab"* ]]; then
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current_name="$line"
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else
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video_devices+=("$(echo "$line - $current_name" | xargs)")
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fi
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done < <( v4l2-ctl --list-devices )
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printf "%s\n" "${video_devices[@]}"
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current_name=
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current_device=
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current_subdevice=
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while IFS= read line; do
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if ! [[ $line == " "* ]]; then
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current_name=$(echo $line | cut -d: -f2- | cut -c2-)
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current_device=$(echo $line | grep -E 'card [0-9]+:' -o | tr -dc '[:digit:]' || true)
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elif [[ $line == " Subdevice #"* ]]; then
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current_subdevice=$(echo $line | grep -E 'Subdevice #[0-9]+:' -o | tr -dc '[:digit:]' || true)
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#audio_devices+=("$(echo "$line - $current_name" | xargs)")
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audio_devices+=("hw:$current_device,$current_subdevice - $current_name")
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else
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:
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fi
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done < <( arecord -l )
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printf "%s\n" "${audio_devices[@]}"
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zenity_cells=()
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maybe_true=TRUE
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for video_device in "${video_devices[@]}"; do
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if grep <<<"$video_device" -q Elgato; then
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zenity_cells+=("$maybe_true")
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maybe_true=FALSE
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else
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zenity_cells+=(FALSE)
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fi
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zenity_cells+=("$video_device")
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done
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selected_video_device=$(
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zenity --list --text="Which video device" --radiolist --column=Select --column=Device "${zenity_cells[@]}" \
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| cut -d' ' -f1
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)
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zenity_cells=()
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maybe_true=TRUE
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for audio_device in "${audio_devices[@]}"; do
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if grep <<<"$audio_device" -q Elgato; then
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zenity_cells+=("$maybe_true")
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maybe_true=FALSE
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else
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zenity_cells+=(FALSE)
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fi
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zenity_cells+=("$audio_device")
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done
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selected_audio_device=$(
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zenity --list --text="Which audio device" --radiolist --column=Select --column=Device "${zenity_cells[@]}" \
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| cut -d' ' -f1
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)
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ffmpeg_common=(
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-fflags nobuffer
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-flags low_delay
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)
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ffmpeg_args=(
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-f v4l2
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-input_format nv12
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-video_size 1920x1080
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-framerate 60
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#-i /dev/video3
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-i "$selected_video_device"
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-f alsa
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#-i hw:5,0
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-i "$selected_audio_device"
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)
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set -x
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ffmpeg "${ffmpeg_common[@]}" "${ffmpeg_args[@]}" -c copy -f nut pipe: | ffplay "${ffmpeg_common[@]}" -f nut -i pipe:
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