# Missing audio for HLS and DASH

**URL:** <https://community.wowza.com/t/missing-audio-for-hls-and-dash/53831>\
**Category:** Wowza Streaming Engine\
**Created:** [August 21, 2019, 4:30pm UTC](https://community.wowza.com/t/missing-audio-for-hls-and-dash/53831 "2019-08-21T16:30:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Bogdan-Alexandru\_Pui](https://avatars.discourse-cdn.com/v4/letter/b/dbc845/32.png) [@Bogdan-Alexandru\_Pui](https://community.wowza.com/u/Bogdan-Alexandru_Pui)\
**Post date:** [August 21, 2019, 4:30pm UTC](https://community.wowza.com/t/missing-audio-for-hls-and-dash/53831/1 "2019-08-21T16:30:19Z")

</div>

Hello,

So I’m fairly new to the streaming world and I seem to hit a wall with my searches.

I have a vod application that gets its data from an s3 bucket.

My S3 bucket has a vod with the following structure: 5 video mp4 files, 2 audio mp4 files and a .smil file that looks like this:

```auto
<smil>
    <head/>
    <body>
        <switch>
           <audio src="mp4:a_125343_48000.mp4" system-bitrate="125343"/>
           <audio src="mp4:a_61359_48000.mp4" system-bitrate="61359"/>
           <video src="mp4:v_1713320_1024_576_25.mp4" system-bitrate="1713320"/>
           <video src="mp4:v_2898990_1280_720_25.mp4" system-bitrate="2898990"/>
           <video src="mp4:v_292950_400_224_25.mp4" system-bitrate="292950"/>
           <video src="mp4:v_4889067_1280_720_25.mp4" system-bitrate="4889067"/>
           <video src="mp4:v_976215_768_432_25.mp4" system-bitrate="976215"/>
        </switch>
    </body>
</smil>

```

Unfortunately, I’ve discovered that Wowza ignores the tags in case of HLS and DASH streaming so my stream is working, but it doesn’t have any audio. My question is, is there a workaround for this? What would be my solution for this issue ?

---

<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:** [August 21, 2019, 5:55pm UTC](https://community.wowza.com/t/missing-audio-for-hls-and-dash/53831/2 "2019-08-21T17:55:56Z")

</div>

For VOD streaming in S3, we recommend you use MediaCache. This will easily allow you to retrieve your on-demand files and configure them for playbak in HLS, DASH and others as well:

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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:** [August 21, 2019, 6:03pm UTC](https://community.wowza.com/t/missing-audio-for-hls-and-dash/53831/3 "2019-08-21T18:03:51Z")

</div>

Here is doc article for you @Bogdan-Alexandru Puiu:

[https://www.wowza.com/docs/how-to-scale-video-on-demand-streaming-with-media-cache](https://www.wowza.com/docs/how-to-scale-video-on-demand-streaming-with-media-cache)

When you visit the page, you will see in the left nav, we have several docs referencing the MediaCache.

Please reach out through a support ticket should you need any help at all setting this up. Our tech support team has helped many of our customers implement a VOD workflow through AWS with HLS playback. Some of it can get a bit advanced, so don’t hesitate to reach out!

[https://www.wowza.com/support/open-ticket](https://www.wowza.com/support/open-ticket)