How do I get the ADV7180 to output a stable CCIR-656 video signal
(blue screen) with no video input ever applied from the time it is
powered up ?? I have enabled blue screen output on loss of video and
tried forcing the video mode to a fixed standard (auto-detect off) to no avail.
The 7180 is feeding an MPEG encoder and it appears as if the encoder
is trying to lock the signal (it will start encoding briefly with a flash of blue
video), but then it dies (stops encoding) Apparently, the 7180 signal is
not fully 656 compliant.
If I connect a video source, then remove it, everything works fine from
there (the blue screen comes up whenever the video source is removed).
I need it to output a stable bue screen with no history of video ever applied.