大家看看采集到的图像（很奇怪）

分辨率设的是768*576，为啥采到的图像会是这样哪？变成了两个768*288。7111+7146的采集卡

the one you got is seperate odd field and even field.
you just need to interlace them together as one image.

you are almost done.

7146的interlace如何做？pitch的大小要设为每行像素所占位数，还是每行像素所占位数*2？还有7146的奇偶场基地址该如何设？大小要差一行还是一场？

you should read the datasheet.
all of your questions are answered inside the datasheet.

by the way:
7146的奇偶场基地址大小要差一行.

感谢hong兄的赐教，7146a和7111a的datasheet我已经看过n遍，正因为没看明白所以请hong兄说的详细一点。下面是我对interlace的理解：7146的奇偶场基地址大小要差一行，pitch的大小要设为每行像素所占位数*2，将7146a的0x78寄存器的interlace位置一，这样在采集奇场并在写内存的时候就空出了一行让偶场插入。可是这样我采集到的图像只是将单场拉长，另一场并没有插进去。这是为什么哪〉？
请hong兄继续赐教！！

how do you confirm this:
\"只是将单场拉长，另一场并没有插进去\"?

很简单，放大图像后会发现有明暗间隔的条纹，而且用ue打开文件会发现只是隔行有数据

how do you get the odd and event seperated video at the top of this thread? (what did you set into the DMA related registers?)

you may post out the register settings here.