# Tuning edge & origin wowza

**URL:** <https://community.wowza.com/t/tuning-edge-origin-wowza/52511>\
**Category:** Wowza Streaming Engine\
**Tags:** transcoder, low-latency\
**Created:** [December 18, 2018, 10:52am UTC](https://community.wowza.com/t/tuning-edge-origin-wowza/52511 "2018-12-18T10:52:48Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Iyus\_Dedi\_Putra](https://avatars.discourse-cdn.com/v4/letter/i/cab0a1/32.png) [@Iyus\_Dedi\_Putra](https://community.wowza.com/u/Iyus_Dedi_Putra)\
**Post date:** [December 18, 2018, 10:52am UTC](https://community.wowza.com/t/tuning-edge-origin-wowza/52511/1 "2018-12-18T10:52:48Z")

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Dear all,

I want to ask tuning on cupertino which already documented on this link [https://www.wowza.com/docs/how-to-improve-playback-of-lower-latency-apple-hls-streams](https://www.wowza.com/docs/how-to-improve-playback-of-lower-latency-apple-hls-streams), when i tried to follow the exact setting the streaming will stuck on buffering.

but if reset cupertinoMaxChunkCount & CupertinoPlaylistChunkCount to default value, the streaming are running smoothly.

is there any option that i need to setting to solve it?

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**Author:** ![Alex\_C](https://avatars.discourse-cdn.com/v4/letter/a/bbe5ce/32.png) [@Alex\_C](https://community.wowza.com/u/Alex_C)\
**Post date:** [December 28, 2018, 12:05am UTC](https://community.wowza.com/t/tuning-edge-origin-wowza/52511/2 "2018-12-28T00:05:39Z")

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Hello @Iyus Dedi Putra,

Try adjusting the cupertinoMaxChunkCount, CupertinoPlaylistChunkCount and cupertinoChunkDurationTarget from the minimum to something higher.

Possibly using a 2 second chunk size (along with the corresponding chunk counts) would improve the playback stability.

Regards,

Alex

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**Author:** ![Iyus\_Dedi\_Putra](https://avatars.discourse-cdn.com/v4/letter/i/cab0a1/32.png) [@Iyus\_Dedi\_Putra](https://community.wowza.com/u/Iyus_Dedi_Putra)\
**Post date:** [January 3, 2019, 5:54pm UTC](https://community.wowza.com/t/tuning-edge-origin-wowza/52511/3 "2019-01-03T17:54:53Z")

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@Alex C

If i change chunkduration to 2 second the mediafile that user streaming become bigger than before. Coz’ i wanted to decrease the bandwidth usage that user needed to stream our live tv.

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**Author:** ![Andrew\_Ramberg](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@Andrew\_Ramberg](https://community.wowza.com/u/Andrew_Ramberg)\
**Post date:** [January 3, 2019, 10:27pm UTC](https://community.wowza.com/t/tuning-edge-origin-wowza/52511/4 "2019-01-03T22:27:48Z")

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Hi Iyus,

Lowering the chunk duration improves the latency but doesn’t reduce the bandwidth required for playback. To reduce the bandwidth, you might want to utilize a transcoded rendition with smaller frame size and bitrate requirements. You can manipulate which ones are available for users and the following article maybe helpful to you in this process:

Controlling Transcoder in WSE

Best regards,

Andrew

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**Author:** ![Iyus\_Dedi\_Putra](https://avatars.discourse-cdn.com/v4/letter/i/cab0a1/32.png) [@Iyus\_Dedi\_Putra](https://community.wowza.com/u/Iyus_Dedi_Putra)\
**Post date:** [January 4, 2019, 7:33am UTC](https://community.wowza.com/t/tuning-edge-origin-wowza/52511/5 "2019-01-04T07:33:05Z")

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@Andrew Ramberg

Thank you sir for your advice, now i already resize the frame size and bitrate and it works like a charm.

😃