I have problem with stream switching with on demand (f4v file) content. The switch from stream A to B is extremely slow taking approx. 12-20sec. Most likely a keyframe is expected by the client from Wowza to start playing back. I am using Wowza version 2.2.3.
We were following Adobe documentation when implementing dynamic stream switching:
Expression 4 live streaming capabilities are not supported by Wowza, which does not accept pre-segmented Smooth streams. We recommend Expression 4 for encoding static files for multi-bitrate vod streaming.