Problem with transferring data from different clock domains using dual_port_ram

Hello everyone,

I want to transfer a frame from 143Mhz clock domain to 49Mhz clock domain to view the frames through vga,

For a test i tried to transfer a vertical and horizontal white lines to view through the vga port. But i am not getting it right. What i expect is https://ibb.co/ink4qj . But what i am getting is https://ibb.co/i3hojd . I don't know what i have done wrong. I am stuck

here, If someone could help me, it would be great.

Thank you!

(All the VHD files are uploaded and the top level is "fifo.vhd". The board i am using is DE1-SoC)