In ADV7401, video quality is degraded over a period of time


we have used ADV7401 in our design for capturing of Composite video.

Initially, the output video is good but over a period of time the video quality is degraded, video consists black lines. We need support to resolve the issue.

In ADV7401 datasheet, we found part nos ADV7401BSTZ-110 and ADV7401WBSTZ-110, what is the difference between the two.

Is automobile grade available in ADV7401.