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I would like to try recording sleep with an iPhone, connected to a power source overnight. However, I'm not sure if the default camera is capable of recording videos that long. A colleague suggested using a video codec with very few key frames, just saving the changes between frames.

My questions are twofold - are there any open source projects that already do long(3+ hours) video recording on iPhone. How would I extract the file from the iPhone if it is 3 Gb or so in size?

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乍一看，这似乎不是一个编程问题……但您暗示您可能正在寻找视频编解码器的开源代码。

不过，我想我可能会对 iPhone 本身有所了解。

如果您以 320p 录制，则平均约为每分钟 15mb。计算 8 小时，等于 7.2GB。

据我所知，没有时间限制，只有 iPhone 空高清空间的限制。但是，有些人报告说，在很长的录制过程中，视频录制有时会突然停止，似乎是随机的。

于 2013-06-28T00:40:52.677 回答