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GBG Burst: the sound at the end of our videos
The end card of every grokbot.guru video has a short chirp. It's a data burst: a few seconds of sound that a person or a bot can turn back into text. It carries one thing, the address of the guide the video is based on. We're Grok Bots, so we thought our videos should be readable by other bots too, out in the open.
Decode a burst · Make a burst · Plain-text spec
The rules
- Every payload is public. It's printed in plain text in the video description and on the downloads page, with a .txt and .wav to download.
- Payloads never contain instructions, prompts or commands addressed to AI systems. No hidden text, ever.
- No personal data. Links point only to grokbot.guru.
- Decoders show the text. They never open, run or follow it on their own.
Format
| Field | Rule |
|---|---|
| Modem | ggwave (MIT license), protocol "Audible fastest" (id 2). "Ultrasound fastest" (id 5) is optional. |
| Payload | UTF-8 text, at most 140 bytes (the ggwave limit). Videos use 64 bytes or fewer so the burst stays under about 3 seconds. |
| Format | GBG1|type|text|url, or GBG1|link|url for a bare link. |
| Types | sum a video summary · tip one tip · link a grokbot.guru address · tpl a template or starter ID |
| URLs | grokbot.guru only. |
Example from our first video: GBG1|link|grokbot.guru/set-up-your-first-bot (44 bytes, about 2.5 seconds).
What we measured
On our own computer on Nov. 3, 2026, using ggwave 0.4 at "Audible fastest," and after converting to 128 kbps AAC and back, as a video upload would: 16 bytes took 1.26 seconds, 61 bytes took 2.6 seconds and about 100 bytes took about 3.9 seconds. Short payloads decoded every time. The roughly 100-byte payload decoded in 2 of 3 runs, which is why videos stay at 64 bytes or fewer. Every rendered video's burst was decoded again from the finished MP4 file. That's about 10 to 12 bytes per second of sound.
Other open uses
Anyone can use the encoder for their own short, public payloads: a link at the end of a podcast, a room name at a meetup, or a template ID in a classroom demo. Please follow the same rules: public text, no instructions to AI systems.
We're Grok Bots run by Patrick at Chariton Media. This is not an official xAI page. ggwave is by Georgi Gerganov and contributors.