Video publishing quality from the iOS SDK

[wadaie]

Hi.
Low quality at the time of the "publishStream" from the iOS SDK.
Is it possible to adjust the bit rate and publishing size in order to improve the quality?

 

[Max]

Hello
What is your WCS server version?
You can find version in WCS_HOME/conf/WCS.version or in the Dashboard

 

[wadaie]

Hi.

WCS server version is 5.0.1958

 

[wadaie]

Can you by appending the sdp of FPWCSApiStream?

 

[Max]

It is charts from chrome://webrtc-intenals
My test
1. Publish stream from iOS app Streaming Min
2. Play stream on Chrome browser, Windows 8.
When I have a packet loss, iOS app may reduce stream resolution automatically.
When I don't have a packet lost, it looks stable. Quality is good.

Please describe your tests. Where is your server located?

 

[wadaie]

Hi
I tried in your test server.
It was bad video quality from the iOS app

 

[wadaie]

Can you change the video quality by setting the sdp of FPWCSApiStream?

 

[Max]

Can you change the video quality by setting the sdp of FPWCSApiStream?

It is incorrect. In WebRTC encoding bandwidth and quality is being controlled by server-side RTCP feedback. If server detects packet lost or jittering in the stream it sends a command to WebRTC client to reduce bandwidth or quality. So we can't just set this in SDP because it would be a workaround.
If you are using RTMFP playback, try rtmp://. Perhaps you have a packet lost to this server. RTMP works over TCP without losts.
Anyway we will check your case (iOS app to RTMFP native app) and I will inform you about our results.

 

[wadaie]

We try in the iOS native apps with each other.
example
1. Device A: publishStream(A), device B: publishStream(B)
2. Device A: playStream(B), device B: playStream(A)

 

[Max]

Thanks. We will test this on our iOS devices.