# No sound on some MPEG-DASH Streams but on RTMP ( same stream )

**URL:** <https://community.wowza.com/t/no-sound-on-some-mpeg-dash-streams-but-on-rtmp-same-stream/40164>\
**Category:** Wowza Streaming Engine\
**Created:** [September 10, 2015, 3:52am UTC](https://community.wowza.com/t/no-sound-on-some-mpeg-dash-streams-but-on-rtmp-same-stream/40164 "2015-09-10T03:52:34Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![dogan\_dogan](https://avatars.discourse-cdn.com/v4/letter/d/58956e/32.png) [@dogan\_dogan](https://community.wowza.com/u/dogan_dogan)\
**Post date:** [September 10, 2015, 3:52am UTC](https://community.wowza.com/t/no-sound-on-some-mpeg-dash-streams-but-on-rtmp-same-stream/40164/1 "2015-09-10T03:52:34Z")

</div>

Dear Wowza Community and Support Team,

In some streams i have no sound on MPEG-DASH but on the RTMP ( same stream ).😕

Do you have any idea what that cause this issue? Do you have similar experiences?

Thank you for your time and help

best regards

---

<div class="post-metadata">

**Author:** ![dogan\_dogan](https://avatars.discourse-cdn.com/v4/letter/d/58956e/32.png) [@dogan\_dogan](https://community.wowza.com/u/dogan_dogan)\
**Post date:** [September 10, 2015, 4:07am UTC](https://community.wowza.com/t/no-sound-on-some-mpeg-dash-streams-but-on-rtmp-same-stream/40164/2 "2015-09-10T04:07:07Z")

</div>

i also checked the chunks the brower is downloading. On MPEG-DASH streams where the audio doesn’t play it is not downloading the audio chunks. Only video chunks like “chunk\_ctvideo”.

i did also a player check ( i tested it on the latest JWPlayer as well as on bitdash player ).

---

<div class="post-metadata">

**Author:** ![Daren\_Johnson](https://avatars.discourse-cdn.com/v4/letter/d/ee59a6/32.png) [@Daren\_Johnson](https://community.wowza.com/u/Daren_Johnson)\
**Post date:** [September 10, 2015, 3:53pm UTC](https://community.wowza.com/t/no-sound-on-some-mpeg-dash-streams-but-on-rtmp-same-stream/40164/3 "2015-09-10T15:53:31Z")

</div>

Hi,

This is being handled in ticket #140600

Daren

---

<div class="post-metadata">

**Author:** ![Daren\_Johnson](https://avatars.discourse-cdn.com/v4/letter/d/ee59a6/32.png) [@Daren\_Johnson](https://community.wowza.com/u/Daren_Johnson)\
**Post date:** [October 6, 2015, 10:56pm UTC](https://community.wowza.com/t/no-sound-on-some-mpeg-dash-streams-but-on-rtmp-same-stream/40164/4 "2015-10-06T22:56:18Z")

</div>

Hi,

Please provide more details about the audio codec being used in the stream in question.

If the audio codec is AAC, what type of AAC and version?

Daren

---

<div class="post-metadata">

**Author:** ![Ricardo\_Miranda](https://avatars.discourse-cdn.com/v4/letter/r/59ef9b/32.png) [@Ricardo\_Miranda](https://community.wowza.com/u/Ricardo_Miranda)\
**Post date:** [September 24, 2015, 11:07am UTC](https://community.wowza.com/t/no-sound-on-some-mpeg-dash-streams-but-on-rtmp-same-stream/40164/5 "2015-09-24T11:07:12Z")

</div>

Hello,

I’m experiencing the same issue.

Thanks for any help,

Ricardo