HLS quality monitoring

Qosifire provides HLS streaming quality monitoring

HLS is the most popular protocol for media delivery which is supported on the majority of end-user devices.
Qosifire makes sure that your HLS streams are delivered with proper quality.
CurrentlyMPEG-TS,fragmented MP4(fMP4 CMAF) andaudio-onlyMPEG-TS containers are supported.

Qosifire HLS stream setup and usage details can be found inManaging streams article.
You can find full list of HLS monitoring parameters inHLS monitoring knowledge base article, here are some most notable ones.

The following quality parameters are monitored.

General connectivity

  • Connection events and issues
  • DNS-related events and issues
  • Redirects


  • General info
  • Playlist and chunklist issues
  • Chunk validation
  • Buffering

Both single-stream and adaptive bitrate (ABR) streams are tracked real-time.

HLS timestamps real-time debugging

In HLS chunk, video and audio samples may have different timestamps which may cause playback issues. Qosifire allows debugging this kind of issues.

  • You can see DTS for video samples and PTS for video and audio samples.
  • All information is available real-time.
  • Any timestamps difference between audio and video samples time is highlighted.
  • All 3 types of containers are supported.

Read this article for more details and watch this video to see how you can debug HLS PTS timestamps:

Watch this video to learn more details about HLS monitoring setup:


Notifications are currently initiated againstconnectivityandHLS-specificerrors.
All users with proper access level in your account will get emails and mobile push notifications.

Get started with Qosifire now

Run free 30-seconds check-up