Check audio/video track when rtc stream updated (#2418)
Check audio/video track when rtc stream updated (#2418)


winlinvip/srs,winlinvip/srs,ossrs/srs,ossrs/srs,winlinvip/srs,winlinvip/srs,ossrs/srs,winlinvip/srs,ossrs/srs,ossrs/srs,winlinvip/srs,winlinvip/simple-rtmp-server,ossrs/srs