> ## 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.

# Glossary

> Plain explanations of the terms you meet in dfine.io, for streaming and for review.

Plain explanations of the terms you meet in dfine.io. Pick your product to see the terms that apply to it. The last tab covers terms that are the same in both.

<Tabs>
  <Tab title="Streaming Classic">
    | Term                | Meaning                                                                                           |
    | ------------------- | ------------------------------------------------------------------------------------------------- |
    | Ingest server       | The address where your encoder sends the stream.                                                  |
    | RTMPS               | The secure streaming protocol we use for ingest. The S stands for an encrypted connection.        |
    | Stream key          | A private token that connects your encoder to the right stream slot.                              |
    | Stream slot         | One ingest endpoint inside a project, with its own stream key.                                    |
    | Access code         | The passcode you share so viewers can watch the stream.                                           |
    | Playout             | Sending the video out to your viewers.                                                            |
    | Monitor link        | A private playout link to watch the stream on a reference monitor or decoder.                     |
    | Latency             | The short delay between sending and seeing the picture. With dfine.io it stays under one second.  |
    | Bitrate             | The data rate of the stream. It affects both quality and stability, and your plan sets a maximum. |
    | Adaptive bitrate    | The bitrate adjusts to how stable the viewer's connection is.                                     |
    | Codec               | The method used to compress and decompress video, for example H.264 or VP8.                       |
    | Color sampling      | How much color detail the video keeps, for example 4:2:0, 4:2:2 or 4:4:4.                         |
    | Luminance range     | The brightness range of the signal, video range 64 to 940 or full range 0 to 1023.                |
    | WebRTC              | The technology that delivers the live picture to the viewer in real time.                         |
    | Confidential access | An access tied to one email, with a password and an IP lock after the first login.                |
    | Geo blocking        | Restricting who can watch by the country their connection comes from.                             |
    | OBS                 | Open Broadcaster Software, a free encoder for live streaming.                                     |
    | NDI                 | A standard that lets video devices talk to each other over a network.                             |
    | Encoder             | The device or software that turns your video into a stream, such as OBS or a Blackmagic device.   |
  </Tab>

  <Tab title="Review">
    | Term                   | Meaning                                                                     |
    | ---------------------- | --------------------------------------------------------------------------- |
    | Project                | The top-level space that holds your folders and files.                      |
    | Folder                 | A group of files inside a project. A folder can have its own password.      |
    | Frame-accurate comment | Feedback pinned to the exact frame of a video.                              |
    | Annotation             | A drawing or mark you add on top of the picture.                            |
    | Version                | A new upload of the same file, kept side by side so you can compare.        |
    | Original               | Your uploaded file at full quality.                                         |
    | Optimized              | A lighter copy we create for smooth playback in the browser.                |
    | Share link             | A secure link you send so others can review without an account.             |
    | Folder password        | A password on a folder so only people with it can open it.                  |
    | Upload Manager         | The panel that shows upload progress and lets you retry a file.             |
    | Activity log           | A record of who did what and when, available for download as an audit copy. |
    | Conferencing           | Live sessions inside Review for reviewing together.                         |
    | Approval               | Marking a version as approved to sign it off.                               |
    | One-time code          | A short code sent by email to confirm a guest before they comment.          |
  </Tab>

  <Tab title="Shared & security">
    | Term                      | Meaning                                                                                                                    |
    | ------------------------- | -------------------------------------------------------------------------------------------------------------------------- |
    | SSL and TLS               | Security standards that encrypt data while it travels over the internet.                                                   |
    | AES 256                   | A strong encryption standard used to protect your stream and your data.                                                    |
    | Two-factor authentication | A second step at login that keeps your account safe.                                                                       |
    | Session timeout           | The period of inactivity after which you are signed out for safety.                                                        |
    | Data residency            | Where your data is stored. With dfine.io it stays in Germany, inside the EU.                                               |
    | TISAX                     | An information security standard used in the automotive industry. We offer TISAX certified streaming servers as an option. |
  </Tab>
</Tabs>