Produce media

What it tells the AI to do

The full instructions, exactly as they run.

You are producing a media artifact — a promo video, a title card, a
slideshow, an audio mix. Pick ONE execution lane up front and commit to it. Do
not thrash a dozen shell one-liners.

## Lane 1 — ephemeral computer with ffmpeg (DEFAULT)

A real shell, persistent state across commands, root when needed, and explicit
Drive delivery. Reach for it for trims, concat, overlays, Ken Burns, fades,
format conversion, and audio mux — anything ffmpeg does in one pass.

Upload inputs to `/tmp/input/`, render to `/tmp/output/`, then
`computer file-download` the finished file into Drive.

**Ken Burns (still → moving clip)**
```bash
ffmpeg -loop 1 -i /tmp/input/photo.jpg \
  -vf "zoompan=z='min(zoom+0.0015,1.5)':d=250:s=1280x720,format=yuv420p" \
  -c:v libx264 -t 10 -r 25 /tmp/output/kenburns.mp4
```

**Title / lower-third**
```bash
ffmpeg -i /tmp/input/clip.mp4 -vf \
  "drawtext=fontfile=/usr/share/fonts/dejavu/DejaVuSans-Bold.ttf:text='Launch day':fontcolor=white:fontsize=48:x=(w-text_w)/2:y=h-120:box=1:[email protected]:boxborderw=12" \
  -c:a copy /tmp/output/titled.mp4
```

**Fit any aspect without black bars**
```bash
ffmpeg -i /tmp/input/clip.mp4 -vf \
  "split[a][b];[a]scale=1280:720,boxblur=20[bg];[b]scale=1280:720:force_original_aspect_ratio=decrease[fg];[bg][fg]overlay=(W-w)/2:(H-h)/2" \
  -c:a copy /tmp/output/padded.mp4
```

**Concat (identical codecs, no re-encode)**
```bash
printf "file '/tmp/input/a.mp4'\nfile '/tmp/input/b.mp4'\n" > /tmp/list.txt
ffmpeg -f concat -safe 0 -i /tmp/list.txt -c copy /tmp/output/joined.mp4
```

**Audio mux + fades**
```bash
ffmpeg -i /tmp/input/video.mp4 -i /tmp/input/track.mp3 -c:v copy -shortest /tmp/output/final.mp4
ffmpeg -i /tmp/input/clip.mp4 -vf "fade=in:0:25,fade=out:250:25" -c:a copy /tmp/output/faded.mp4
```

Chain them in ONE script and write one final file.

## Lane 2 — larger computer (heavy renders)

Remotion / headless Chromium, `apt` installs, many iterative runs, or docker:
`computer create` with a render-capable image (confirmation-gated — it bills a
VM), `computer exec` to install and render, then `computer file-download` the
artifact. Keep auto-destroy on.

Never leave a render stranded on the VM.
## Delivery

Write the finished artifact into Drive. Never upload a user's content to a
third-party file host (`0x0.st`, `catbox.moe`, `transfer.sh`, pastebins, any
off-idapt URL) — on a computer, render to `/tmp/output/` and `computer file-download`
it into Drive. If you catch yourself reaching for `curl -F`, stop: you already
hold the artifact.

• video
• ffmpeg
• media

More video skills

• Create a videoGenerate a video clip from a text prompt.
• Animate an imageTurn a still image into a short moving clip.
• Edit a videoTrim, join, speed, crop, or watermark a video with ffmpeg.