Bench: TP-Link Tapo C200 (T23N, SC2336P, RTL8188FTV), ciao eda8406, prudynt-t 3ff07e4,
OTA flashed, audio.mic_hq=false (AAC 16 kHz), stream0 1920x1080@15, 2048 kbps.
Harness: bc_ch0.py - DESCRIBE /ch0 with Require: www.onvif.org/ver20/backchannel,
SETUP track1/track2/track0 over TCP interleaved, PLAY, stream RFC 3640 AAC-hbr
(AAC-LC 16 kHz mono, real-time pacing), TEARDOWN.