# No audio on output stream **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [February 19, 2014, 3:27pm UTC](https://community.wowza.com/t/no-audio-on-output-stream/42160 "2014-02-19T15:27:36Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Kevin\_Heavey](https://avatars.discourse-cdn.com/v4/letter/k/f4b2a3/32.png) [@Kevin\_Heavey](https://community.wowza.com/u/Kevin_Heavey)\ **Post date:** [February 19, 2014, 3:27pm UTC](https://community.wowza.com/t/no-audio-on-output-stream/42160/1 "2014-02-19T15:27:36Z")
Hi, I’m inputting to Wowza an RTP h264 .ts with MPEG1 Audio layer ll Mode and there is no Audio on the output stream What do I need to change in the config to make the audio work? I’m using Wowza 4, see sample log: #Version: 1.0 #Start-Date: 2014-02-19 11:44:47 GMT #Software: Wowza Streaming Engine 4.0.0.00 build10425 #Date: 2014-02-19 #Fields: x-severity x-category x-event date time c-client-id c-ip c-port cs-bytes sc-bytes x-duration x-sname x-stream-id x-spos sc-stream-bytes cs-stream-bytes x-file-size x-file-length x-ctx x-comment WARN server comment 2014-02-19 11:44:47 - - - - - 43488.986 - - - - - - - - LiveStreamPacketizerSanJose.handlePacket[liveorigin/_definst_/test.stream][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Flash player. WARN server comment 2014-02-19 11:44:47 - - - - - 43488.988 - - - - - - - - LiveStreamPacketizerCupertino.handlePacket[liveorigin/_definst_/test.stream][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable on iOS devices. WARN server comment 2014-02-19 11:44:47 - - - - - 43488.988 - - - - - - - - LiveStreamPacketizerSmoothStreaming.handlePacket[liveorigin/_definst_/test.stream][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Silverlight player. WARN server comment 2014-02-19 11:44:47 - - - - - 43488.998 - - - - - - - - LiveStreamPacketizerSanJose.handlePacket[liveorigin/_definst_/test.stream][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Flash player. WARN server comment 2014-02-19 11:44:47 - - - - - 43488.998 - - - - - - - - LiveStreamPacketizerCupertino.handlePacket[liveorigin/_definst_/test.stream][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable on iOS devices. WARN server comment 2014-02-19 11:44:47 - - - - - 43488.999 - - - - - - - - LiveStreamPacketizerSmoothStreaming.handlePacket[liveorigin/_definst_/test.stream][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Silverlight player. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.004 - - - - - - - - LiveStreamPacketizerSanJose.handlePacket[liveorigin/_definst_/test.stream\_source][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Flash player. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.008 - - - - - - - - LiveStreamPacketizerSanJose.handlePacket[liveorigin/_definst_/test.stream\_360p][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Flash player. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.009 - - - - - - - - LiveStreamPacketizerCupertino.handlePacket[liveorigin/_definst_/test.stream\_360p][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable on iOS devices. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.008 - - - - - - - - LiveStreamPacketizerSmoothStreaming.handlePacket[liveorigin/_definst_/test.stream\_360p][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Silverlight player. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.011 - - - - - - - - LiveStreamPacketizerCupertino.handlePacket[liveorigin/_definst_/test.stream\_source][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable on iOS devices. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.013 - - - - - - - - LiveStreamPacketizerSmoothStreaming.handlePacket[liveorigin/_definst_/test.stream\_source][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Silverlight player. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.013 - - - - - - - - LiveStreamPacketizerCupertino.handlePacket[liveorigin/_definst_/test.stream\_160p][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable on iOS devices. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.012 - - - - - - - - LiveStreamPacketizerSanJose.handlePacket[liveorigin/_definst_/test.stream\_160p][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Flash player. WARN server comment 2014-02-19 11:44:47 - - - - - 43489.015 - - - - - - - - LiveStreamPacketizerSmoothStreaming.handlePacket[liveorigin/_definst_/test.stream\_160p][mp4a.40.33]: MP3 Audio: Audio is not MPEG1 Layer 3. May not be playable by Silverlight player. ---
**Author:** ![Kevin\_Heavey](https://avatars.discourse-cdn.com/v4/letter/k/f4b2a3/32.png) [@Kevin\_Heavey](https://community.wowza.com/u/Kevin_Heavey)\ **Post date:** [February 19, 2014, 4:22pm UTC](https://community.wowza.com/t/no-audio-on-output-stream/42160/2 "2014-02-19T16:22:54Z")
A bit more info: there is audio on stream recordings captured from incoming streams But no audio using the testplayer built into wowza 4 ---
**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\ **Post date:** [February 19, 2014, 11:22am UTC](https://community.wowza.com/t/no-audio-on-output-stream/42160/3 "2014-02-19T11:22:37Z")
A few questions: What is the source of the stream? Is there video as well as audio, or audio only? What player are you testing in? Can you encode to a different audio format with the encoder? Are there any other errors in the logs? Are you using the Wowza Transcoder in this workflow? Salvadore ---
**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\ **Post date:** [February 20, 2014, 11:54am UTC](https://community.wowza.com/t/no-audio-on-output-stream/42160/4 "2014-02-20T11:54:30Z")
Kevin, thanks for the update. Glad to hear it is working. Salvadore ---
**Author:** ![Kevin\_Heavey](https://avatars.discourse-cdn.com/v4/letter/k/f4b2a3/32.png) [@Kevin\_Heavey](https://community.wowza.com/u/Kevin_Heavey)\ **Post date:** [February 20, 2014, 5:49pm UTC](https://community.wowza.com/t/no-audio-on-output-stream/42160/5 "2014-02-20T17:49:10Z")
Hi Salvadore, Thanks for your reply, I was using the Transrate to transcode and had passthough set for the audio. It’s working now 🙂 Kevin