asepharyana
67ab289caa
Root cause (2026-08-12 11:50 test): merge ffmpeg hit a transient YouTube 403 and exited code 8 BEFORE prepareStream attached its input listeners (voice release+join takes ~10s). The input's end/error events fired into the void, the encoder stdin never received EOF, demux resolved with fallback 0x0 metadata, setSpeaking fired anyway → stream 'started' with zero frames for 8+ minutes (black tile, both ffmpeg processes hung). Fixes: - mediaSource: pass yt-dlp http_headers (UA/referer) to the merge ffmpeg via -headers to suppress transient 403s; destroy the returned stream with an error when the merge exits non-zero before producing bytes. - screenShareController: resolveInputWithRetry — tee the merge stream and wait for the first readable byte (12s timeout) before proceeding; on error/EOF/timeout retry the whole resolution with a FRESH yt-dlp run (signed DASH URLs expire fast) up to 3 attempts. Stuck merges get EPIPE via input.destroy() so no process leaks per attempt. - prepareStream: race guard — if the input already ended/destroyed before listeners attach, EOF the encoder stdin immediately; first-frame watchdog in playStream rejects 'started but nothing flowing' after 10s instead of resolving with a silent black stream. Tests: +2 (merge-fail zero-byte terminal state, -headers forwarding).