Latency in the live media as compare to Shaka Player

Hi,

I am checking a live content and can clearly see that in Shaka Player demo app, player is around 5 seconds before the live edge but in ExoPlayer it is around 30 seconds. There is no suggestedPresentationDelay in the media.

And if i configure the LowLatency with target offset then it goes closer to the live edge. Question is why the player does not try to go as much as possible to the live edge like Shaka Player.

ExoPlayer version: 2.17.1

I have sent the media over the email. Can you please help me to understand it ?

[tonihei]

Thanks for the manifest. As you already pointed out yourself, it doesn’t have the suggestedPresentationDelay value defined and thus ExoPlayer falls back to a default value of 30 seconds. ExoPlayer has to choose some value and because many live streams can’t support low latency values, 30 seconds is a sensible default that should work for most streams.

That leaves you with multiple ways to fix it:

1. Update the manifest to include a suggestedPresentationDelay or a ServiceDescription with a Latency target value.
2. Define which fallback ExoPlayer should use if both values are missing by setting DashMediaSource.Factory.setFallbackTargetLiveOffsetMs
3. Override the target live offset (even if defined by the manifest) by setting MediaItem.LiveConfiguration.Buiider.setTargetOffsetMs for specific MediaItem instances, or use DefaultMediaSourceFactory.setLiveTargetOffsetMs to set an override for all MediaItems.

[GouravSna]

Thanks a lot @tonihei