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Upgraded our stream metadata information

Balder Viëtor May 2, 2026 1 min read

Hey Everyone,

Today I wanted to show you a change we're planning for the meta information available within the MistServer interface (or API).

New additional meta data available in the MistServer interface

As you might've spotted there's a lot more information available. Funny thing is that this information was mostly already available, just not in the GET API, only in the websocket API .

Now it does contain some information that is only usable by the server moderators.

  • Process id shows the PID of the process responsible for the ingest.
  • Masked shows the masking of the track, whether viewers, outputs or processes can use this track.

The newer/updated fields that would be handy for all users are the following:

  • Codec: more specific versioning of the codec is now added
  • Player track id: Only relevant when using the Mistplayer, it now shows which track corresponds with what player id
  • Created from: Shows the creation date of the media if available
  • Keyframe interval: The amount of time between keyframes, which determines the closest starting playback point for many protocols
  • frame duration: The time between frames, a range can be given if it's variable and updates over time.
  • frames per GOP: The amount of frames between keyframes.
  • Issues: This will put any detected potential issues in plain text. The range of issues is quite broad, but hopefully understandable when shown. Think of warnings such as: unsteady framerate, too much time between keyframes, too high jitter on the ingest.

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