What does a clear indication of high BER typically point to?

High Bit Error Rate (BER) is a critical indicator in data transmission quality. When a system shows a clear indication of high BER, it typically signifies that there are numerous errors occurring during the transmission of the video signal. In the context of video picture transmission, a high BER often results in the degradation of the picture quality, which could manifest as pixelation, freezing, or complete loss of the video signal. Therefore, it strongly points to a failure in video picture transmission, as the integrity of the data being transmitted is compromised.

In contrast, the other options do not relate to the implications of a high BER. Successful video display would generally denote that the video signal is being transmitted accurately and without errors, which is contrary to what high BER suggests. Enhanced sound quality and increased signal strength are also not directly correlated with high BER, as they imply good delivery of audio and signal power, respectively. High BER indicates transmission issues that would diminish the overall quality of both video and audio signals.