Fix video codec, aspect and placement
Three problems visible at once on a running instance: the picture stuttered and drifted behind the sound, it was letterboxed oddly, and it appeared as a separate tile instead of coming from the bot. - YouTube handed us AV1 (format 398). Software-decoding AV1 at 720p does not sustain real time on a small server, which explains both the stutter and the drift; H.264 is now requested first, VP9 second. - The frame was padded into a fixed box, so a clip whose proportions differed got black bars baked in and then more from the client. Size is now a bounding box and the frame keeps the clip's own proportions. - Video was published as a screen share, which every client renders as its own tile. VIDEO_SOURCE=camera (the new default) puts it inside the bot's tile; "screen" keeps the old behaviour. VIDEO_SYNC_OFFSET_MS is there for the residual drift, since audio and video travel as two separately published tracks. Measured loudnorm first to rule it out as the cause of the desync: it adds 0 ms. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Claude Opus 5
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@@ -83,10 +83,22 @@ YTDLP_JS_RUNTIME=node
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# Это лишь разрешение: сам показ включается тумблером в панели или командой
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# !video, и по умолчанию выключен. При false тумблер в панели не показывается.
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VIDEO_ENABLED=false
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# Рамка, в которую вписывается кадр: пропорции клипа сохраняются, чёрные поля
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# не добавляются. 640x360 выбрано из осторожности — видео грузит CPU.
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VIDEO_WIDTH=640
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VIDEO_HEIGHT=360
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VIDEO_FPS=24
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# camera — картинка внутри плитки бота; screen — отдельной плиткой,
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# как демонстрация экрана.
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VIDEO_SOURCE=camera
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# Подстройка синхронизации, мс. Плюс задерживает видео, минус — торопит.
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# Звук и картинка публикуются двумя дорожками, поэтому идеального совпадения
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# «из коробки» не гарантируется.
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VIDEO_SYNC_OFFSET_MS=0
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DEFAULT_VOLUME=60
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MAX_QUEUE_SIZE=500
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