Color of pixel in video frame

What is best way to get color of pixel {123, 456} in frame 7 in flash video file?

Is this a one time deal? If so goto Applications > Utilities > DigitalColor Meter.
If it’s something you do on a regular basis, there is no way that I know of to do this in Applescript. If this is the case, you could try GUI scripting DigitalColor Meter.

Thanks. I need to regularly analyze 60 minutes long videos and find all frames which contain computer generated graphics which are couple of seconds long, rest of the videos are shot in video camera.

Is there any unix-tools or how about ASOC?