MPEG-4 tested for mobile suitability

MPEG-4 tested for mobile suitability
Steve Bush MPEG-4 coding is to be tested for limited data rate applications like mobile communications. At its recent Tokyo meeting, the Moving Picture Expert Group (MPEG) committee decided to determine the format’s suitability for mobile applications on networks like PCS and IMT2000 – the next generation mobile phone standards. Bit rates between 32 and 384kbit/s will be examined at bit error rates up to 10-3, including bursty conditions. Two sets of tests, addressing MPEG-4 audio and video respectively, should be completed by July. The video test will evaluate the error robustness of MPEG-4 video. Audio tests are to be carried out in the range 6 to 24kbit/s at bandwidths between 3.5 and 9kHz. The results are to be compared with analogue AM modulation in the same bandwidths. The MPEG meeting also took steps to extend the use of MPEG-2 to higher quality applications like HDTV. A maximum bit rate of 300Mbit/s was discussed.


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