> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dfine.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Technical facts

> The technical facts for dfine.io Review: live sessions, ingest, uploads, files, security and hosting.

Review is more than asynchronous feedback: it also runs live conferencing with livestreaming. The specs below cover both the live side and the file side.

| Spec                | Detail                                                                                                                                                                 |
| ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Codec               | H.264                                                                                                                                                                  |
| Audio               | Stereo 2.0 · Opus                                                                                                                                                      |
| Bitrate             | Adaptive over simulcast · up to 20 Mbit/s on Livestreaming, up to 12 Mbit/s on Livestreaming (RTMPS)                                                                   |
| Latency             | Under 500 ms on Livestreaming, the WHIP passthrough                                                                                                                    |
| Ingest              | WHIP, which passes your source through untouched, and RTMPS, which is transcoded to Full HD. The Desktop app covers Premiere Pro, DaVinci Resolve and SDI IN           |
| Live sessions       | Conferencing rooms with Livestreaming and Livestreaming (RTMPS), metered per minute                                                                                    |
| Files               | 150 GB per file, 250 files per upload, sent in parts from 100 MB upwards. Every size and duration limit is on [File formats and limits](/en/review/formats-and-limits) |
| Preview & original  | Adaptive HLS stream for video, WebP for images, original kept for download                                                                                             |
| Session timeout     | Configurable, 15 minutes to 24 hours                                                                                                                                   |
| Comment translation | Optional AI translation, if your plan and your account settings allow it                                                                                               |
| Hosting             | EU region-pinned (Frankfurt), EU jurisdiction for stored objects, edge-optimized                                                                                       |

## Security and hosting

Live sessions run over WebRTC with SSL and TLS. Access control: folder and share-link passwords, link expiry, and a full activity log you can download as an audit copy. See [Security and privacy](/en/review/security).