we are working with IMX515 based system. composite video output from a CCD camera is connected to the system. The unit is assembled in an enclosure. After an operation of 1Hrs, the video become distorted as it seems the horizontal sync is lost. we generated a test pattern in the IMX IPU and this image worked normally for more than 4Hrs. i have attached the video clip of the issue recorded. the chip case temperature will be around 45degree C.