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请教tvp5150采集视频的问题

Other Parts Discussed in Thread: TVP5150

在试用TVP5150采集720*576的视频时,视频源是视频源通过CVBS接口接入的。得到的视频有黑色部分,下边有抖动。把视频分两部分显示了,视频的的两部分显示上下对调了。如图:

正常的视频是这样的,如下图:

请教是什么原因导致的?需要怎么设置?谢谢