Plextor ConvertX PX-M402U - Page 15

Video Quality Tests Page 11

Moving pictures and MPEG-4 Format

The Plextor ConvertX PX-M402U's performance is most interesting when moving pictures and live scenes are investigated. Afterall, most end users will use the device to capture moving pictures and not still images. Clarity, distortion and brightness are also investigated. Still images are compared with the images provided on the Pioneer disc, without any kind of conversion. We tried to use dark as well as light images.

On this page, MPEG-4 based profiles were used (MPEG-4 and DivX). The same frame was extracted on each occasion, and the image was zoomed by 400%. Clicking on the photos will reveal full sized high resolution images for better comparison.

DVD unconverted image
MPEG-4 High Quality Conversion
MPEG-4 Good Quality conversion
MPEG-4 Standard Play conversion
MPEG-4 Long Play conversion
MPEG-4 Extended Play conversion
DivX conversion
DivX Long Play conversion

Very good quality for MPEG-4 based conversion with this moving scene. Objects are presented exactly the same way as in the original file. The slight distortion in the colours was not as noticable as before, in the case of still images.

DVD unconverted image
MPEG-4 High Quality Conversion
MPEG-4 Good Quality conversion
MPEG-4 Standard Play conversion
MPEG-4 Long Play conversion
MPEG-4 Extended Play conversion
DivX conversion
DivX Long Play conversion

With this moving scene, more vivid colors were observed when MPEG-4 good quality was used, even better that MPEG-4 high quality. This is strange, since better results were expected with the high quality profile. However, all profiles produce excellent results.