# Get video info (duration, resolution, codec)
ffprobe -v error -show_entries format=duration:stream=codec_name,width,height -of json "$VIDEO_PATH"

# Extract key frames (1 per second, max 12 frames)
OUTDIR=/tmp/alma-frames-$(date +%s)
mkdir -p "$OUTDIR"
DURATION=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$VIDEO_PATH" | cut -d. -f1)
FPS_RATE=$(echo "scale=2; 12 / $DURATION" | bc 2>/dev/null || echo "1")
# Cap at 1fps for short videos
if (( $(echo "$FPS_RATE > 1" | bc -l 2>/dev/null || echo 0) )); then FPS_RATE=1; fi
ffmpeg -hide_banner -loglevel error -i "$VIDEO_PATH" -vf "fps=$FPS_RATE,scale=720:-1" -frames:v 12 "$OUTDIR/frame_%02d.jpg"
ls "$OUTDIR"

# Even spread: N frames across entire video
ffmpeg -hide_banner -loglevel error -i "$VIDEO_PATH" \
  -vf "select='not(mod(n\,$(ffprobe -v error -count_frames -select_streams v:0 -show_entries stream=nb_read_frames -of csv=p=0 "$VIDEO_PATH" | awk -v n=8 '{printf "%d", $1/n}')))'" \
  -vsync vfr -frames:v 8 "$OUTDIR/frame_%02d.jpg"

# Specific timestamp
ffmpeg -hide_banner -loglevel error -ss 5.0 -i "$VIDEO_PATH" -frames:v 1 "$OUTDIR/at_5s.jpg"

# Thumbnail grid (single image overview)
ffmpeg -hide_banner -loglevel error -i "$VIDEO_PATH" \
  -vf "fps=1/$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$VIDEO_PATH" | awk '{printf "%.1f", $1/9}'),scale=320:-1,tile=3x3" \
  -frames:v 1 "$OUTDIR/grid.jpg"

# Extract audio from video
ffmpeg -hide_banner -loglevel error -i "$VIDEO_PATH" -vn -acodec pcm_s16le -ar 16000 -ac 1 "/tmp/alma-audio-$(date +%s).wav"

# Transcribe with Whisper (auto-detect language)
whisper "/tmp/alma-audio.wav" --model turbo --output_format txt --output_dir /tmp/alma-whisper

# Transcribe with specific language
whisper "/tmp/alma-audio.wav" --model turbo --language zh --output_format txt --output_dir /tmp/alma-whisper

# Read transcription
cat /tmp/alma-whisper/*.txt

rm -rf "$OUTDIR" /tmp/alma-whisper /tmp/alma-audio*.wav