adaptive audio streaming with transcoding on-the-fly

[Eugene_Zheganin]

Hi.

Is there some technique available for adaptive audio streaming without having preconverted audio files ? Like using a transcoder, or something like that. I have a great number of mp3 files that I need to stream with ability to change rate using some of the modern ways to play with the bandwidth. Is there any way to accomplish that ?

Thanks.

[sal_jefferson]

For adaptive bitrate switching to work, all the various bitrate renditions need to be keyframe aligned, some encoders offer a multi-bitrate encoding option, but the Wowza Transcoder AddOn is the most accurate way to create the ABR set.

For this reason ABR for true audio only is not possible as there are no keyframes in an audio only stream. However, you can transrate the audio, and use PassThru for the video and ABR should work. You will need to have a video track included.

It can be very low bitrate and empty (or a static image) and be set to PassThru, but it needs to be included for ABR to work. Audio only ABR is not supported.

Salvadore