Testing system, testing method, computer program product, and non-transitory computer readable data carrier

A testing method for a video and audio reproduction system, the method comprising:

• providing a data source comprising video and audio data, the video and audio data comprising unique marks in every video frame and every audio frame, wherein an audio frame is an audio sequence with the length of a respective video frame and the unique marks in the audio frames comprise an audio code, especially a sinusoidal sound wave of a respective frequency, wherein the frequency of the sinusoidal sound wave ranges from a minimum frequency to a maximum frequency, wherein frequencies of sinusoidal sound waves of two consecutive audio frames are spaced apart by a first threshold value, wherein the frequencies of the sinusoidal sound waves increase sequentially by the first threshold value until the maximum frequency is reached and then fall back to the minimum frequency plus a second threshold value, and wherein the second threshold value increases with every repetition of the frequency sequence by a starting value of the frequency sequence;
• reproducing the video and audio data with the video and audio reproduction system,
• recording a video stream and an audio stream generated by the video and audio reproduction system based on the video and audio data;
• extracting the unique marks from the recorded video stream and the recorded audio stream;
• and
• verifying if respective unique marks of simultaneous video frames and audio frames have been recorded by the recording device simultaneously.

A non-transitory computer readable medium comprising computer readable instructions, which when executed by a processor cause the processor to perform a testing method for a video and audio reproduction system, the method comprising:

• providing a data source comprising video and audio data, the video and audio data comprising unique marks in every video frame and every audio frame, wherein an audio frame is an audio sequence with the length of a respective video frame and the unique marks in the audio frames comprise an audio code, especially a sinusoidal sound wave of a respective frequency, wherein the frequency of the sinusoidal sound wave ranges from a minimum frequency to a maximum frequency, wherein frequencies of sinusoidal sound waves of two consecutive audio frames are spaced apart by a first threshold value, wherein the frequencies of the sinusoidal sound waves increase sequentially by the first threshold value until the maximum frequency is reached and then fall back to the minimum frequency plus a second threshold value, and wherein the second threshold value increases with every repetition of the frequency sequence by a starting value of the frequency sequence;
• reproducing the video and audio data with the video and audio reproduction system,
• recording a video stream and an audio stream generated by the video and audio reproduction system based on the video and audio data;
• extracting the unique marks from the recorded video stream and the recorded audio stream;
• and
• verifying if respective unique marks of simultaneous video frames and audio frames have been recorded by the recording device simultaneously.