No audio on output stream

Wowza Streaming Engine
1

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.

2

A bit more info: there is audio on stream recordings captured from incoming streams

But no audio using the testplayer built into wowza 4

3

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

4

Kevin, thanks for the update. Glad to hear it is working.

Salvadore

5

Hi Salvadore,

Thanks for your reply, I was using the Transrate to transcode and had passthough set for the audio.

It’s working now :slight_smile:

Kevin