RTC: Refine memory copy, allocate it later
RTC: Refine memory copy, allocate it later

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