Hello, we are using Android SDK 188.8.131.52 and are experiencing a problem where WCS 5.2.1279 wouldn't republish video with RTMP - only audio gets restreamed and with a significant delay - around 15 seconds. We also tried doing this using WebSDK - works fine.
When you publish a WebRTC stream from Android SDK, VP8 codec is probably used (H264 is not supported on system level). In this case, video transcoding VP8->H264 is working on the server. But from browser with WebSDK H264 can be published because most browsers supports this codec out of the box.
Please check if the server instance capabilities is enough to transcode a stream published: you should have at least 1 CPU core to transcode 2 streams 720p, or 2 CPU cores to transcode 1 stream 1080p. So the minimum recommended instance is 8 CPU, 16 Gb RAM.
No, this only means the problems with video encoding. This may be visual artifacts, freezes, lags, or video track may not be played at all. Please use the statistics page to check the server state and stream metrics to check a stream state.