Clocked Video Input overflows

Yes the backpressure from downstream functions can cause an overflow. You need to make sure that the combination of video IP clock rate, input data rate, input pixel buffer size, output data rate, and output pixel buffer size are such that an overflow does not occur.

Most video standards have a vertical blanking period. If your clocked output is say a few lines ahead of your input data stream, you may be in a situation where the input data stream is pushing data in but the output stream is not using any of it which results in an overflow.

You could try throwing a frame buffer between them.

Jake