vq — video questions

Answer questions about YouTube videos using subtitles and an LLM.

vq fetches subtitles from a YouTube video, passes them to an LLM, and returns the answer — with live Markdown rendering in the terminal.

Requirements

vq shells out to two external CLIs that must be on your PATH:

• yt-dlp — subtitle extraction (always required)
• llm — LLM integration (required to answer questions; not needed for --text-only/--metadata)

vq checks these at startup and, if one is missing, prints the missing tool with an install hint and exits.

Install them as standalone tools (recommended, keeps your llm plugins/keys):

uv tool install yt-dlp
uv tool install llm

YouTube: keep yt-dlp current + JS runtime

Since 2026 YouTube requires yt-dlp to solve a JavaScript challenge, otherwise it returns a misleading This video is not available for videos that are perfectly fine. Two things are needed:

1. A recent yt-dlp (older than ~90 days often breaks):

   uv tool upgrade yt-dlp   # or: pipx upgrade yt-dlp
   

2. A JavaScript runtime (deno) plus the EJS challenge-solver script:

   curl -fsSL https://deno.land/install.sh | sh   # installs deno to ~/.deno/bin
   

   Then enable it once, globally, in ~/.config/yt-dlp/config:

   --js-runtimes deno:/home/YOU/.deno/bin/deno
   --remote-components ejs:github
   

   (--remote-components ejs:github lets yt-dlp fetch the challenge solver on demand. This affects every yt-dlp call on your machine, not just vq.)

If vq prints yt-dlp failed to fetch video info, run the failing URL through yt-dlp -j <URL> directly — vq now echoes yt-dlp's own error underneath, which tells you the real cause.

You also need uv to install vq itself:

curl -LsSf https://astral.sh/uv/install.sh | sh

LLM Configuration

Before first use, configure an API key for your preferred provider:

OpenAI:

llm keys set openai

Anthropic (Claude):

llm install llm-anthropic
llm keys set anthropic

For other providers, see the LLM plugins directory.

Installation

From PyPI (recommended) — the package is published as video-questions; the installed command is vq:

uv tool install video-questions

pipx install video-questions
# or, into the current environment:
pip install video-questions

Upgrade:

uv tool upgrade video-questions

Uninstall:

uv tool uninstall video-questions

From source:

git clone https://github.com/aborruso/video_questions.git
cd video_questions
make install     # uv tool install .
make dev         # editable dev environment
make uninstall

Verify Installation

make test

Or manually:

vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' --text-only | head -5

Usage

vq [OPTIONS] URL [QUESTION]

Arguments

Options

Examples

# Ask a question about a video
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' 'What are the main topics?'

# Ask, then keep asking interactively about the same video (-i / --chat)
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' 'Give me a summary' -i

# Reply in Italian
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' 'What is this about?' -p Italian

# Use a specific model
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' 'Summarize this' -m claude-3-5-sonnet-20241022

# Use an LLM template
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' 'What is this about?' -t my_template

# Save subtitles to file
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' --sub subtitles.txt

# Save LLM response to file
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' 'Summarize this' -o response.md

# Print subtitles only (no LLM)
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' --text-only

# Force re-download (skip cache)
vq 'https://www.youtube.com/watch?v=OM6XIICm_qo' 'What changed?' --no-cache

Cache

Subtitles are cached in /tmp/qv_cache/ for 60 days.

# View cache
ls -lh /tmp/qv_cache/

# Clear all cache
rm -rf /tmp/qv_cache/

# Clear cache for a specific video
rm -f /tmp/qv_cache/VIDEO_ID.txt /tmp/qv_cache/VIDEO_ID.title.txt

Use --no-cache to force a fresh download without clearing the cache.