Abr VOD Streaming from live transcoded recording

[Simone_Marrone]

Hi,

I was wondering if is possible to deliver ABR vod stream from static .mp4 files generated with live recorders.

I managed to set transcoder to generate ‘_source’ and ‘_360p’.

Before starting live, I setup 2 recorders to automatic start on first keyframe.
I start live stream.
Recording goes well (generating 2 .mp4 files) but when I create the realated SMIL file it does not work.

I succesfully managed to transcode file with ffpmeg and get SMIL working that way but
I was wondering if there was a way to avoid using ffpeg to transcode .mp4 since i already have them recorded from source.

I suspect that the problem is something about video track alignement but I’m not sure since just beginner in video streaming and Wowza.

Thank you so much

[Rose_Power-Wowza_Com]

It’s critical that all renditions of your video are keyframe aligned and are consistent with the same keyframe interval. We recommend 2 seconds.

Here is a video tutorial on how to set it the SMIL file and some helpful docs. The steps are similar for VOD as for live. Feel free to submit a support ticket if still gives you a problem.

https://www.wowza.com/docs/how-to-do-adaptive-bitrate-streaming#vod-adaptive-bitrate-streaming

Transcoding Your Adaptive Bitrate Live Stream