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When the host starts before the virtual monitor is attached, pickSource() finds nothing matching settings.displayId and falls back to the primary screen. The panel then re-sends that selection as capture starts, select-source saved it, and from then on settings.displayId pointed at the primary: every later run captured the main screen and the iPad showed a shrunken copy of it instead of the second monitor. Found on this machine — ffmpeg was running on ddagrab=output_idx=0 (3840x2160) with the 1024x768 virtual display sitting unused at output 1. Only an actual click in the monitor picker persists now. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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What changes / Что меняется
select-sourceсохраняетdisplayIdтолько тогда, когда монитор выбран кликом в панели.Why / Зачем
Если хост стартует раньше, чем подцепился виртуальный монитор,
pickSource()не находит ничегопод
settings.displayIdи откатывается на основной экран. Дальше панель при старте захватапереотправляет текущий выбор,
select-sourceего сохранял — иsettings.displayIdнавсегдауказывал на основной монитор. Каждый следующий запуск захватывал главный экран, и на iPad
приезжала уменьшенная копия рабочего стола вместо второго монитора.
Поймано сегодня на этой машине:
ffmpegработал наddagrab=output_idx=0(3840×2160), авиртуальный дисплей 1024×768 стоял незанятым на
output_idx=1.How it was tested / Как проверено
npm testpassesdisplayIdна виртуальный монитор хостподнялся на
capture output 1, 60 fps, задержка 5 мсChecklist
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