dm642用于采集视频时速度上限多少,每秒可采集多少M的视频
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主要是受限于PCLK的最大值。PCLK的最大值请参考数据手册时序部分。
视频发送也不能只看PCLK,因为每帧数据都会有无效的点和无效的行,去除掉后才是实际传输的有效数据。