The MPEG-2 video specification is quite flexible. Many parameters in the standard must be interpreted correctly for a decoder to reconstruct encoded video data. It needs a well defined procedure to verify that a MPEG-2 decoder is compliant with the standard. This paper presents a design method of MPEG-2 video test bitstreams, which examines whether an MPEG decoder under test (D.U.T.) produces correct images. And the test bitstreams are designed to produce a uniform gray image if the DUT complies with the standard to facilitate detection of error. The presented test bitstream is composed of two parts: the first part generates an image by varying a test parameter and the second part is predictive coded with zero motion vector and a difference image which is the negative of the correct test pattern. It will cancel the test pattern and a uniform image will result if the decoder conforms to the standard. Also we analyze characteristics of test bitstream in public domain and present design method of test bitstreams.
Bibliographical noteFunding Information:
This paper is supported by tlie Information and Telccomtnuoicatioit K&D Center, tlyitndai Eleclronics Industries Co. Ltd. ‘lite authors acknowledge tlie support from Bong-Hwan Lee, Jac-Won Chung, and Kwanhoo Kiln from Flyundai Elcctronics. I’art of the paper is contributed by Jung-Coo Chi, Hye-ltn Shin, Scung-Rum Suli, Su-1-lyun Park and Professor Dong-Sub Clio from Ewha W. Univ.