mobux 0.1.4

A touch-friendly tmux web UI for unhinged people who run terminal sessions from their phone while walking the dog
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#!/usr/bin/env bash
# transcribe — local, offline speech-to-text for mobux uploads.
#
# Usage: transcribe <audio-or-video-file> [more files...]
#
# mobux's 🎤 record button and 📎 attach button drop uploaded files in
# /tmp/mobux-uploads/. This converts any ffmpeg-readable media (webm/opus from
# the browser recorder, mp4, m4a, ogg, wav, or the audio track of a video) to
# 16 kHz mono WAV and runs it through whisper.cpp, printing the transcript to
# stdout. Fully local — nothing leaves the host.
#
# Capability-gated: if ffmpeg / whisper.cpp / the model aren't present it prints
# how to install (make setup-transcribe) and exits 3, so callers can fall back.
#
# Override locations via env:
#   WHISPER_DIR   (default ~/.local/whisper.cpp)
#   WHISPER_BIN   (default $WHISPER_DIR/build/bin/whisper-cli)
#   WHISPER_MODEL (default $WHISPER_DIR/models/ggml-base.en.bin)
set -euo pipefail

WHISPER_DIR="${WHISPER_DIR:-$HOME/.local/whisper.cpp}"
WHISPER_BIN="${WHISPER_BIN:-$WHISPER_DIR/build/bin/whisper-cli}"
WHISPER_MODEL="${WHISPER_MODEL:-$WHISPER_DIR/models/ggml-base.en.bin}"

missing=()
command -v ffmpeg >/dev/null 2>&1 || missing+=("ffmpeg (apt install ffmpeg)")
[ -x "$WHISPER_BIN" ] || missing+=("whisper.cpp binary at $WHISPER_BIN")
[ -f "$WHISPER_MODEL" ] || missing+=("whisper model at $WHISPER_MODEL")
if [ "${#missing[@]}" -ne 0 ]; then
  {
    echo "transcribe: local transcription unavailable. Missing:"
    for m in "${missing[@]}"; do echo "  - $m"; done
    echo "Install with: make setup-transcribe"
  } >&2
  exit 3
fi

if [ "$#" -lt 1 ]; then
  echo "usage: transcribe <audio-or-video-file> [more...]" >&2
  exit 2
fi

for f in "$@"; do
  if [ ! -f "$f" ]; then
    echo "transcribe: no such file: $f" >&2
    exit 2
  fi
  wav="$(mktemp --suffix=.wav)"
  trap 'rm -f "$wav"' EXIT
  # -vn drops any video stream; resample to whisper's expected 16 kHz mono PCM.
  ffmpeg -nostdin -loglevel error -y -i "$f" -vn -ar 16000 -ac 1 -c:a pcm_s16le "$wav"
  # -nt = no timestamps → clean transcript text only.
  "$WHISPER_BIN" -m "$WHISPER_MODEL" -f "$wav" -nt 2>/dev/null
  rm -f "$wav"
  trap - EXIT
done