# CupertinoMediaCasterConnection.outputStream: Streamname: Too many chunk in the output, quitting

**URL:** <https://community.wowza.com/t/cupertinomediacasterconnection-outputstream-streamname-too-many-chunk-in-the-output-quitting/94411>\
**Category:** Wowza Streaming Engine\
**Created:** [January 3, 2022, 1:49pm UTC](https://community.wowza.com/t/cupertinomediacasterconnection-outputstream-streamname-too-many-chunk-in-the-output-quitting/94411 "2022-01-03T13:49:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Tolga\_Dikmen](https://avatars.discourse-cdn.com/v4/letter/t/b5e925/32.png) [@Tolga\_Dikmen](https://community.wowza.com/u/Tolga_Dikmen)\
**Post date:** [January 3, 2022, 1:49pm UTC](https://community.wowza.com/t/cupertinomediacasterconnection-outputstream-streamname-too-many-chunk-in-the-output-quitting/94411/1 "2022-01-03T13:49:13Z")

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Hello

The information about my wowza version is as follows

Our live broadcast streams freeze every 3 to 5 seconds, this error appears in the error logs, which values should I change, no matter what I do, can you help?

 ![](https://us1.discourse-cdn.com/flex002/uploads/wowza1/original/2X/c/cb0d3d926f0e2b3ef357610b07fdbbcad1374df0.png)

About Wowza Streaming Engine  
Wowza Streaming Engine Version  
4.8.14+9 (build 20210719152831)  
Wowza Streaming Engine Manager Version  
4.8.14+9 (build 20210719152831)  
OS  
Windows Server 2016 (amd64)

#### Java Information

Java Version  
9.0.4  
Java VM Version  
9.0.4+11  
Java Architecture  
64  
Java Name  
OpenJDK 64-Bit Server VM  
Java Vendor  
Oracle Corporation  
Java Home  
C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.8.14+9\jre  
Java Max Heap Size  
26667MB

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<div class="post-metadata">

**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:** [January 3, 2022, 5:46pm UTC](https://community.wowza.com/t/cupertinomediacasterconnection-outputstream-streamname-too-many-chunk-in-the-output-quitting/94411/2 "2022-01-03T17:46:42Z")

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Welcome to the community @Tolga_Dikmen! Since you’re new, please know that Wowza technical support does not troubleshoot in the forums since they require full access to your Engine files and logs.

You will need to submit a support ticket please.

In the meantime, I can provide some guidance and would recommend you read the following article where we offer our guidance for Cupertino chunk settings:

[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)

  

I’d look at this in particular:

- **cupertinoMaxChunkCount** – Sets the maximum number of chunks Wowza Streaming Engine stores in the available chunk list. The default value is **10** , but for reduced latency streaming we recommend storing 50 seconds worth of chunks. For one-second chunks, set the **cupertinoMaxChunkCount** to **50** ; if you’re using half-second chunks, the value should be doubled ( **100** ).

- **cupertinoPlaylistChunkCount** – Sets the number of items returned to the player in the playlist. The default value is **3** , but for reduced latency streaming we recommend returning 12 seconds of data to the player. This prevents the loss of chunks between chunklist requests. For 1-second chunks, set the **cupertinoPlaylistChunkCount** to **12** ; if you’re using half-second chunks, the value should be doubled ( **24** ).