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by Lazlo_Nibble
5554 days ago
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My first guess at an explanation would be that the camera is actually a self-contained little image/video engine that's "running" (i.e., capturing images internally) anytime the phone is powered up, and that under certain circumstances tickled by FaceTime, polling the camera engine results in a cached frame getting kicked out of a camera-internal buffer. Mind you, that's based on absolutely no actual understanding of the hardware, software or APIs involved. |
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