Comparing randomness on various video and Audio Media File types
This paper analyses randomness in various video and audio media file types, like: Joint Photographic Experts Group (JPEG), Waveform Audio File Format (WAV), Flash video (FLV), high-quality, free and open video format for the web (WEBM) and MPEG-1 Audio Layer 3 (MP3). Analysis is done by executing different statistical test. Statistical tests are usually used for testing different both True Random Number Generators (TRNG) and Pseudo-Random Number Generators (PRNG), but we use them in this paper to analyse various media file types instead of TRNGs and PRNGs output results. Proposed methods for analysing are implemented in C programming language, by using one part of ENT (pseudo random number sequence test program) and making additional scripts for faster processing. Comparison of randomness is done by comparing different file types and accompanying results of statistical tests with each other. The results of comparison are presented.