I worked on an embedded video system once where no one took into account the slight difference between the encoder and decoder clock frequencies. If the encoder

I worked on an embedded video system once where no one took into account the slight difference between the encoder and decoder clock frequencies. If the encoder was slower, no problem, you dropped a frame every once in a while. If the encoder was faster, you would buffer frames up to the memory limit of the system. Since these systems were typically left on for weeks at a time, the pilots would eventually discover the video they were using to fly a vehicle was several seconds in the past. Luckily this was discovered before initial shipment and the code was changed to drop everything in the buffer except the latest video frame.