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**Category:** Wowza Streaming Engine\
**Created:** [November 21, 2016, 12:29pm UTC](https://community.wowza.com/t/html5-hls-mp4a-40-34-problem/44659 "2016-11-21T12:29:38Z")\
**Posts on this page:** 3\
**Page:** 1
**Author:**  [@Francesco\_D\_Ambrosio](https://community.wowza.com/u/Francesco_D_Ambrosio)\
**Post date:** [November 21, 2016, 12:29pm UTC](https://community.wowza.com/t/html5-hls-mp4a-40-34-problem/44659/1 "2016-11-21T12:29:38Z")
Hi,
we’ve an issue trying to add HLS support on HTML5 desktop browser. We’ve mp3 audio-only files, and we’re trying to stream with Wowza 4.5 using jwplayer/hlsjs but mp3 stream doesn’t work.
It’ seems there’s an issue with hls manifest that set audio codec to “mp4a.40.34” which is not supported by Chrome and Firefox.
For example this manifest doesn’t work: [http://video.radioradicale.it/store-66/_definst_/mp3:2016/11/MP862180.mp3/playlist.m3u8](http://video.radioradicale.it/store-66/_definst_/mp3:2016/11/MP862180.mp3/playlist.m3u8)
```auto
#EXT-X-STREAM-INF:BANDWIDTH=63701,CODECS="mp4a.40.34"
```
instead this other stream works using hlsjs dev: [https://player.webvideocore.net/playlist.m3u8](https://player.webvideocore.net/playlist.m3u8)
```auto
#EXT-X-STREAM-INF:BANDWIDTH=63701
```
Demo: [https://nochev.github.io/hls.js/demo/?src=https%3A%2F%2Fplayer.webvideocore.net%2Fplaylist.m3u8&enableStreaming=true&autoRecoverError=true&enableWorker=true&levelCapping=-1&defaultAudioCodec=undefined](https://nochev.github.io/hls.js/demo/?src=https%3A%2F%2Fplayer.webvideocore.net%2Fplaylist.m3u8&enableStreaming=true&autoRecoverError=true&enableWorker=true&levelCapping=-1&defaultAudioCodec=undefined)
This is the discussion: [https://github.com/dailymotion/hls.js/pull/808#issuecomment-261555621](https://github.com/dailymotion/hls.js/pull/808#issuecomment-261555621)
how can we remove
```auto
CODECS="mp4a.40.34"
```
from mp3 hls manifest?
thanks
---
**Author:**  [@Jermaine\_Hemby](https://community.wowza.com/u/Jermaine_Hemby)\
**Post date:** [December 17, 2016, 8:24am UTC](https://community.wowza.com/t/html5-hls-mp4a-40-34-problem/44659/2 "2016-12-17T08:24:07Z")
Hello!
Thanks for contacting Wowza Forums!
Can you take a look at this article? It shows how to add this property to your output playlist. See if you have this enabled and if so, disable it by changing the value to false
[ARTICLE](https://www.wowza.com/docs/how-to-add-resolution-and-codec-metadata-to-ios-streams)
Regards,
Jermaine
---
**Author:**  [@Christian](https://community.wowza.com/u/Christian)\
**Post date:** [May 19, 2021, 8:28am UTC](https://community.wowza.com/t/html5-hls-mp4a-40-34-problem/44659/3 "2021-05-19T08:28:21Z")
Hello Jermaine,
can’t find the option. Have you a screenshot for this. We have the same issue/troubleshoot…