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Thomas-8525 asked JohnDeutscher-4652 commented

Low latency video streaming in CMAF

Hi,

I was working today on trying to get low latency video streaming working with CMAF.
After some testing I found out that it isn't working with chunked transfer encoding.

Is there a way I can stream MPEG-DASH in CMAF to lower the latency to around 3 to 5 seconds?

Thanks!
Thomas

azure-media-services
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1 Answer

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JohndeuMSFT answered JohnDeutscher-4652 commented

HI Thomas,

We are currently in development on our support for LL-HLS first, followed by support for LL-DASH. We hope to have a preview ready over the Summer for LL-HLS to test with targeting the 3-5 second duration range.

For now, we only support the following latency settings - https://docs.microsoft.com/en-us/azure/media-services/latest/live-event-latency-reference
See the charts on that page for supported latencies, and requirements.

These settings only work on certain players.

I the future when more 3rd party players fully support LL-HLS and LL-DASH we will be able to have a more consistent story. We will likely support HLS.js, Shaka player, Theo Player and Bitmovin players first, as they are all making good progress on their LL-HLS support. Hope that helps!

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This helps a lot!

Thanks for this anwser and can't wait for u to support it.

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Hi John,

How is the development for LL-HLS and LL-DASH going? Are there any news in relation to the roadmap and deployment?


Best
Maria

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Its going well. Focusing on LL-HLS right now. We hope to have a preview ready soon. Probably first quarter of calendar year.

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