WebRTC playback when using a transcoder

[John_Norris2]

Hey Guys, Im struggling to get a decent picture when using a transcoder & WebRTC Playback, My Workflow is as follows,

Stream a Master RTMP Stream Either 1080i50 OR 1080p25 approx 10mbit to Wowza Streaming Engine, This then is sent to destination via a stream target, And its also sent to a transcoder -> h264 .5mbit low res for Webrtc playback in realtime on mobile devices, the video attached is the result, I have been able to fix it using VP9 but then the colours are all off hue. Anyone experience this?

Video Capture

WebRTC Playback Test for Wowza Streaming Engine - Google Chrome 2022-04-13...

This is on windows using chrome, But the results are the same usng mobile and other browsers
If i play the transcode using vlc and rtmp - the playback is fine. so only using webrtc

Thanks in advance

[Peter_Zsolnay]

Sorry for the new topic… I have exactly same results like this video.

webRTC jerky and/or inverted with transcoder

Hi, I tested a webRTC application (with trial licence). An incoming H.264 RTMP (1080p@30fps 6000kbit) can be playback with webRTC in PC Chrome without any problem, that working very-very fine. But if I set transcoding for that, happend: to H.264 (540p@30fps 1200kbit) -> jerky vibration in stream (only with webRTC, VLC can be play right!!!) to VP8 -> inverted color (only the stream, the wowza logo overlay is right) and low qality squares stream to VP9 -> better quality, also inverted colors,…

[Peter_Zsolnay]

I tested with many different source stream, e.g.

• RTSP H.265 CCTV
• RTMP from OBS H.264
• with VBR, CBR, sRGB, 601 color space…

all result was same. Jerky H.264 or broken VP9 colors.