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Add karaoke subtitle burning example to README #128

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Merged
alexkroman merged 1 commit into from
Jun 12, 2026
Merged

Add karaoke subtitle burning example to README #128

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7 changes: 7 additions & 0 deletions README.md
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Expand Up @@ -39,6 +39,13 @@ assembly transcribe "https://podcasts.apple.com/us/podcast/id1516093381" --speak
| assembly --sandbox speak --out episode.wav
```

**Burn karaoke subtitles into a music video** — `-o srt` prints captions to stdout, and `--chars-per-caption` keeps the lines short so they flip with the vocals; ffmpeg renders them onto the video (`-f srt -i pipe:` muxes a toggleable soft-subtitle track instead, no re-encode):

```sh
assembly transcribe video.mp4 -o srt --chars-per-caption 24 > lyrics.srt
ffmpeg -i video.mp4 -vf "subtitles=lyrics.srt:force_style='Fontsize=28,PrimaryColour=&H00FFFF&'" karaoke.mp4
```

**Keep a live to-do list from your mic** — `llm -f` re-runs the prompt over the growing transcript, updating in place:

```sh
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