---
title: Design documents
---

To get early feedback from developers, we publish design documents for larger
changes on this page. Feel free to comment on the documents that are still in
"request for comments" (RFC) status. Note that we do not typically update
documents once changes are implemented.

### RFC status ###

* There are no documents in RFC status at this time

### Archive ###

* [Add support for partially fragmented MP4s][] (July 2020)
* [Audio offload][] (April 2020)
* [Sniffing order optimization][] (April 2020)
* [Masking seek state changes][] (March 2020)
* [Frame-accurate pausing][] (January 2020)
* [Index seeking in MP3 streams][] (January 2020)
* [Low-latency live playback][] (September 2019)
* [Unwrapping Nested Metadata][] (September 2019)
* [Playlist API][] (July 2019)
* [Bandwidth estimation analysis][] (July 2019)

[Add support for partially fragmented MP4s]: https://docs.google.com/document/d/1NUheADYlqIVVPT8Ch5UbV8DJHLDoxMoOD_L8mvU8tTM
[Audio offload]: https://docs.google.com/document/d/1r6wi6OtJUaI1QU8QLrLJTZieQBFTN1fyBK4U_PoPp3g
[Sniffing order optimization]: https://docs.google.com/document/d/1w2mKaWMxfz2Ei8-LdxqbPs1VLe_oudB-eryXXw9OvQQ
[Masking seek state changes]: https://docs.google.com/document/d/1XeOduvYus9HfwXtOtoRC185T4PK-L4u7JRmNM46Ee4w
[Frame-accurate pausing]: https://docs.google.com/document/d/1xXGvIMAYDWN4BGUNqAplNN-T7rjrW_1EAVXpyCcAqUI
[Index seeking in MP3 streams]: https://docs.google.com/document/d/1ZtQsCFvi_LiwFqhHWy20dJ1XwHLOXE4BJ5SzXWJ9a9E
[Low-latency live playback]: https://docs.google.com/document/d/1z9qwuP7ff9sf3DZboXnhEF9hzW3Ng5rfJVqlGn8N38k
[Unwrapping Nested Metadata]: https://docs.google.com/document/d/1TS13CVmexaLG1C4TdD-4NkX-BCSr_76FaHVOPo6XP1E
[Playlist API]: https://docs.google.com/document/d/11h0S91KI5TB3NNZUtsCzg0S7r6nyTnF_tDZZAtmY93g
[Bandwidth estimation analysis]: https://docs.google.com/document/d/1e3jVkZ6nxNWgCqTNibqV8uJcKo8d597XVl3nJkY7P8c