Plextor ConvertX PX-M402U - Page 10

Video Quality Tests Page 6

Still images and MPEG-2/MPEG-1 Format

Still images are used to investigate the behaviour of the converter with a wider range of colours. 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 images as well as lighter images.

On this page, MPEG-2 and MPEG-1 profiles were used (DVD and VCD). The same frame was extracted for every 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
DVD High Quality Conversion
DVD Good Quality Conversion
DVD Standard Play Conversion
DVD Long Play Conversion
DVD Extended Play Conversion
VCD MPEG-1 Conversion

Again, the distortion factor seems to be rather high. Colours could not be 100% reproduced under any format, not even when the high quality profile was used. However, image quality was acceptable, but very good converters can produce better images than the Plextor ConvertX.

DVD unconverted image
DVD High Quality Conversion
DVD Good Quality Conversion
DVD Standard Play Conversion
DVD Long Play Conversion
DVD Extended Play Conversion
VCD MPEG-1 Conversion

Again, the converter introduces minor brightness problems. It should be noted though that the DVD High Quality profile and the DVD Good Quality profile produced almost the same files, in terms of video quality.