# Live Streaming for HLS: only audio (mp3) **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [August 12, 2011, 4:52pm UTC](https://community.wowza.com/t/live-streaming-for-hls-only-audio-mp3/37151 "2011-08-12T16:52:17Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Loopuyt\_Olivier](https://avatars.discourse-cdn.com/v4/letter/l/e19adc/32.png) [@Loopuyt\_Olivier](https://community.wowza.com/u/Loopuyt_Olivier)\ **Post date:** [August 12, 2011, 4:52pm UTC](https://community.wowza.com/t/live-streaming-for-hls-only-audio-mp3/37151/1 "2011-08-12T16:52:17Z")
Hi, I’ve followed tutorial on “How to publish and play a live stream (MPEG-TS based encoder)” and tried to access multicast stream with HLS. What I see in playlist is only .mp3 fragments (linked to my input stream), I do not have TS fragments which include video and audio. Any ideas ? A side question regarding Multi-bitrate, what I’ve understood is that I need an encoder outside of your solution to produce a stream per bitrate properly aligned. Do you have any recommendation on such encoder ? Do you plan to integrate one in your solution ? Thanks ---
**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\ **Post date:** [August 12, 2011, 5:03pm UTC](https://community.wowza.com/t/live-streaming-for-hls-only-audio-mp3/37151/2 "2011-08-12T17:03:22Z")
How is multicast involved? What is the video and audio encoding details? Is there a stream we can look at? If so, send it to support@wowza.com. Include a link to this thread. Yes, key frame alignment is a requirement. Wowza 3 which is not in Preview and scheduled for Sept or Oct release has a transcoder feature which will ensure alignment. [https://www.wowza.com/wowza-server-3-preview.php](https://www.wowza.com/wowza-server-3-preview.php) Richard ---
**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\ **Post date:** [August 17, 2011, 5:26pm UTC](https://community.wowza.com/t/live-streaming-for-hls-only-audio-mp3/37151/3 "2011-08-17T17:26:18Z")
You will have to transocde. Wowza 3 transcoder should work for you, but it Wowza 3 is only in Prevew. Release is not till Oct maybe. Try VLC in between transcoding: [https://www.wowza.com/docs/how-to-use-vlc-as-a-live-stream-encoder-with-wowza-media-server-mpeg-ts](https://www.wowza.com/docs/how-to-use-vlc-as-a-live-stream-encoder-with-wowza-media-server-mpeg-ts)) Here is a metadata example: [https://www.wowza.com/docs/how-to-inject-cue-points-or-metadata](https://www.wowza.com/docs/how-to-inject-cue-points-or-metadata) metadata is support in Flash RTMP streaming mostly at present. Richard ---
**Author:** ![Loopuyt\_Olivier](https://avatars.discourse-cdn.com/v4/letter/l/e19adc/32.png) [@Loopuyt\_Olivier](https://community.wowza.com/u/Loopuyt_Olivier)\ **Post date:** [August 17, 2011, 12:52pm UTC](https://community.wowza.com/t/live-streaming-for-hls-only-audio-mp3/37151/4 "2011-08-17T12:52:59Z")
> How is multicast involved? My test is to ingest udp stream to your server and deliver it to client by HLS. My stream comes from an ASI/IP gateway and is available on our local network. > What is the video and audio encoding details? MPEG2 for Video & MPEG1 for audio > Is there a stream we can look at? If so, send it to support@wowza.com. I’ll try to grab it but it may be heavy. Do you have any reference streams ? > Include a link to this thread. > > Yes, key frame alignment is a requirement. Wowza 3 which is not in Preview and scheduled for Sept or Oct release has a transcoder feature which will ensure alignment. > > [https://www.wowza.com/wowza-server-3-preview.php](https://www.wowza.com/wowza-server-3-preview.php) > > Richard Thanks, then in your R3, your server will be able to deliver the different bitrate streams from one input stream. great. Another side question, could you give me a link on metadata management if you support this feature. Thanks ---
**Author:** ![Loopuyt\_Olivier](https://avatars.discourse-cdn.com/v4/letter/l/e19adc/32.png) [@Loopuyt\_Olivier](https://community.wowza.com/u/Loopuyt_Olivier)\ **Post date:** [August 18, 2011, 6:27pm UTC](https://community.wowza.com/t/live-streaming-for-hls-only-audio-mp3/37151/5 "2011-08-18T18:27:35Z")
Sorry, I’m really newbie with your product… It works better with H264 input and first tests are ok on our STB !!! Very good support Thank you