Honored Contributor
Honored ContributorHi,
>What's happening now is that the output from the alpha blending mixer, which is clocked out to screen, is switching from on to off after every 1-2 second and also the sync signals seem to be going down with the video data This looks like a thoughput issue. Your source may provide either too many data or not enough data for the sink. You may have all your sources and sinks running at the same rate (eg, 60Hz) but this does not means that they are perfectly in sync since you could be using slightly different clocks. This kind of problem is typically fixed by adding a triple buffer at a strategic position in the system. Perhaps you can simply switch triple buffering on in the deinterlacer but it is hard to say without seeing the full system. The mixer could also be the cause of this throughput issue but once again it is hard to say without a complete description of the system. > Also, I sometimes get some sort of sparkling noise (often green in color) spread across the output video data If the "noise" is consistent and stays with the light then it could be a range issue. The VIP cores tend to use the full range available for color samples from 0 to 2^(bits_per_samples) - 1. Some video sinks require a constrained range.
