We are unable to capture 1280x1024 video standard in embedded sync style. But, we are able to capture the same in discrete sync style and found that ADV7612 is not giving sync words. We have tried reading width, height registers and the values obtained are proper for the standard. However, we have successfully captured 1024x768 in embedded sync style.
Please let me know if any specific settings are required to capture this standard in embedded sync style.