get-notebooklm-video

name	get-notebooklm-video
description	Download a NotebookLM video artifact to /input/video.mp4 and create a title.json with its title.

Get NotebookLM Video

Download a completed video artifact from a notebook to the local input directory.

Note: Use nlm download video (top-level command), NOT nlm artifact download (does not exist).

Workflow Steps

Step 1: List Artifacts (optional)

nlm studio status <notebook-id> -j

Step 2: Download Video

Download to /input/video.mp4:

nlm download video <notebook-id> --id <artifact-id> -o input/video.mp4

Options:

• --id <id> — select by artifact ID
• -o / --output <path> — output file path (default: ./{notebook_id}_video.mp4)
• --no-progress — disable progress bar

Step 3: Create Title Metadata

echo '{"title": "<video-title>"}' > /input/title.json

Step 4: Trim Last 4 Seconds

NotebookLM-generated videos often include an ending bumper/logo frame. Trim the last 4 seconds from the video to clean it up:

# Get video duration in seconds
DURATION=$(ffprobe -v error -show_entries format=duration \
  -of default=noprint_wrappers=1:nokey=1 "input/video.mp4")

# Calculate new duration (minus 4 seconds)
TRIM_TO=$(echo "$DURATION - 4" | bc)

# Cut video to new duration (fast — stream copy, no re-encode)
ffmpeg -i "input/video.mp4" -t "$TRIM_TO" -c copy \
  "input/video-trimmed.mp4"

# Replace original with trimmed version
mv "input/video-trimmed.mp4" "input/video.mp4"

echo "Trimmed last 4s: ${DURATION}s → ${TRIM_TO}s"

Requires ffmpeg and ffprobe. Install via brew install ffmpeg (macOS) or apt install ffmpeg (Linux).

Output

input/
├── video.mp4      (typically ~50-100MB, last 4s trimmed)
└── title.json