OTT streams using dashjs are much later than satellite streams

[testeur-990]

We have observed that OTT streams using dash.js have a significantly higher delay compared to satellite streams. Our goal is to minimize this delay as much as possible. Could you provide guidance on which parameters we should adjust to to have a minimum delay?

Our application is used on both web and Smart TVs, including some lower-performance TV models.
In the future, we aim to keep the delay as short as possible, as our app will include live soccer match streams.

[dsilhavy]

There are multiple aspects to take into account here. You can configure the latency in dash.js, here are some examples:

• https://reference.dashif.org/dash.js/nightly/samples/index.html#Live
• https://dashif.org/dash.js/pages/usage/live-streaming.html

However, it also depends on your content conditioning. If you want to achieve low latencies, you will need to use CMAF chunks and signal them accordingly in your MPD. There is more information here:

• https://dashif.org/dash.js/pages/usage/low-latency.html