# Ultra low latency wowza player on mobile doesn't work

**URL:** <https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427>\
**Category:** Wowza Player\
**Created:** [December 5, 2018, 6:01pm UTC](https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427 "2018-12-05T18:01:09Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Jeremie\_PERERA](https://avatars.discourse-cdn.com/v4/letter/j/b2d939/32.png) [@Jeremie\_PERERA](https://community.wowza.com/u/Jeremie_PERERA)\
**Post date:** [December 5, 2018, 6:01pm UTC](https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427/1 "2018-12-05T18:01:09Z")

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Hello,

I am using stream target ULL.

I see that on mobile the Wowza player doesn’t work (iOS/Safari and Android/Chrome).

Is this normal ?

Is that possible to have ULL on mobile or not ?

HTML5 player doesn’t support ULL evidently…

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [December 5, 2018, 6:22pm UTC](https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427/2 "2018-12-05T18:22:41Z")

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Hello @Jeremie PERERA, I see you have submitted a support ticket and will follow the progress.

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**Author:** ![Jeremie\_PERERA](https://avatars.discourse-cdn.com/v4/letter/j/b2d939/32.png) [@Jeremie\_PERERA](https://community.wowza.com/u/Jeremie_PERERA)\
**Post date:** [December 6, 2018, 1:08am UTC](https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427/3 "2018-12-06T01:08:00Z")

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Here the answer :

For true ULL playback on mobile devices, the GoCoder SDK (App) is required. Some mobile players may work using the Wowza Player but they’ll receive a reduced latency HLS stream instead of the ULL stream. So if the device is compatible, they’ll see a latency time around 8-10 seconds unless they utilize the GoCoder SDK App.

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [December 6, 2018, 4:04pm UTC](https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427/4 "2018-12-06T16:04:55Z")

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Thanks very much for sharing this with the community.

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [December 6, 2018, 4:11pm UTC](https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427/5 "2018-12-06T16:11:27Z")

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It is true that with HLS playback, a certain number of “chunks” are required for playback to start and while it can catch up later on in the stream, initial playback will have a bit more latency than true ULL.

BUT, there are things you can do to reduce HLS latency:

[[https://www.wowza.com/docs/how-to-reduce-latency-in-apple-hls-stream-targets-with-wowza-streaming-cloud](https://www.wowza.com/docs/how-to-reduce-latency-in-apple-hls-stream-targets-with-wowza-streaming-cloud)]([http://It](http://It) is true that with HLS playback, a certain number of chunks are required for playback to start and while it can catch up later on in the stream, initial playback will have a bit more latency than true ULL. BUT, there are things you can do to reduce HLS latency: [https://www.wowza.com/docs/how-to-reduce-latency-in-apple-hls-stream-targets-with-wowza-streaming-cloud](https://www.wowza.com/docs/how-to-reduce-latency-in-apple-hls-stream-targets-with-wowza-streaming-cloud))

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**Author:** ![Jeremie\_PERERA](https://avatars.discourse-cdn.com/v4/letter/j/b2d939/32.png) [@Jeremie\_PERERA](https://community.wowza.com/u/Jeremie_PERERA)\
**Post date:** [December 6, 2018, 4:55pm UTC](https://community.wowza.com/t/ultra-low-latency-wowza-player-on-mobile-doesnt-work/52427/6 "2018-12-06T16:55:00Z")

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Thank you :).

But doing this prevent me to use ULL on computer 🙂