Assets and external data

Assets and external data

* All media files (audio, images, video), datasets, and other external assets used in notebooks must be **openly licensed** (CC0, CC-BY, Apache 2.0, public domain, or equivalent). Assets with unclear or restrictive licensing must not be used.
* Always **mention the source and license** in the markdown cell that introduces the asset. For example: "The example below uses a [CC0-licensed](https://creativecommons.org/publicdomain/zero/1.0/) sample from [SoundHelix](https://www.soundhelix.com)."
* Prefer hosting assets on the cookbook's GCS bucket (`gs://generativeai-downloads/`) for long-term URL stability. If that is not possible, use reliable sources (Wikimedia Commons, Internet Archive, YouTube) over ephemeral URLs.
* YouTube videos can be used directly via `types.Part.from_uri()` and do not need to be downloaded.