# Wowza error log(H264Utils.decodeAVCC)

**URL:** <https://community.wowza.com/t/wowza-error-log-h264utils-decodeavcc/97585>\
**Category:** Wowza Streaming Engine\
**Created:** [September 12, 2024, 5:36am UTC](https://community.wowza.com/t/wowza-error-log-h264utils-decodeavcc/97585 "2024-09-12T05:36:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![HS\_CDN](https://avatars.discourse-cdn.com/v4/letter/h/dbc845/32.png) [@HS\_CDN](https://community.wowza.com/u/HS_CDN)\
**Post date:** [September 12, 2024, 5:36am UTC](https://community.wowza.com/t/wowza-error-log-h264utils-decodeavcc/97585/1 "2024-09-12T05:36:53Z")

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Hello?

We upgraded the version of Wowza 4.7.7 to 4.8.28+4.

By the way, the following log occurs in the error log, and I wonder what caused it.

WARN server comment 2024-09-12 12:23:01 - - - - - 5169.853 - - - - - - - - H264Utils.decodeAVCC: Reserved bits: 0x0, did not match expected value of 0x3F  
WARN server comment 2024-09-12 12:23:01 - - - - - 5169.854 - - - - - - - - H264Utils.decodeAVCC: Reserved bits: 0x0, did not match expected value of 0x07  
WARN server comment 2024-09-12 12:23:01 - - - - - 5169.854 - - - - - - - - H264Utils.decodeAVCC: Reserved bits: 0x0, did not match expected value of 0x3F  
WARN server comment 2024-09-12 12:23:01 - - - - - 5169.854 - - - - - - - - H264Utils.decodeAVCC: Reserved bits: 0x0, did not match expected value of 0x07

I wonder how I should solve it.

Thank you.

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**Author:** ![Bernd\_Backhaus1](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/bernd_backhaus1/32/1328_2.png) [@Bernd\_Backhaus1](https://community.wowza.com/u/Bernd_Backhaus1)\
**Post date:** [September 27, 2024, 6:50pm UTC](https://community.wowza.com/t/wowza-error-log-h264utils-decodeavcc/97585/2 "2024-09-27T18:50:50Z")

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Hi,  
please open a [support ticket](https://support.wowza.com/techsupport-request) from your Wowza account with a detailed issue description, so we can help in your individual use case. Please include a description of the ingest stream and your streaming workflow.

Also include your [conf and log files](https://www.wowza.com/docs/how-to-create-a-compressed-zip-file-in-windows-os-x-and-linux)

Regards,  
Bernd Backhaus  
Wowza Support  
WOWZA | The solution you start with, the partner you scale with.

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