Which one of the lowest cost video decoder chip is suitable with BF531?

Hi,

I plan to make my own board based on BF531.

I want to use a low cost video decoder chip such as ADV7180,
but BF533 Ez-Kit Lite uses ADV7183.

ADV7183 has 3 A/D converter and runs with 27 MHz crystal.
ADV7180 has only one A/D converter and runs with 28.6363 MHz crystal.
(I should use different crystals for video chip and the DSP.)

And, TVP5146 from TI is also compatible with BF531.

Which one of the lowest cost video decoder chip you do suggest me?

I only need 2 video channels.

Best,

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