MPEG-4 is better quality than MPEG-2 at the same bit-rate. Although Blu-ray does use MPEG-2 sometimes, many discs are MPEG4. So an acceptable bit-rate with MPEG-2 is between 16-20 depending on the content, where MEPG-4 is between 6-10.
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MPEG-4 is better quality than MPEG-2 at the same bit-rate. Although Blu-ray does use MPEG-2 sometimes, many discs are MPEG4. So an acceptable bit-rate with MPEG-2 is between 16-20 depending on the content, where MEPG-4 is between 6-10.