Video Quality Tests Page 3

Test Screens and MPEG-4 Format

Test screens are used to test the clarity and brightness of the created files. The test screens are compared against the images provided on the Pioneer disc, without any kind of conversion. Black and white lines are introduced, coloured images with all kind of colours, as well as dark and light areas on the screen.

In this page, MPEG-4 based profiles were used (MPEG-4 and DivX). Clicking on the images will reveal 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

When MPEG-4 and DivX profiles are used, image brightness seems to be maintained better than before when MPEG-2 and MPEG-1 profiles were used. Great colour clarity, even at the lowest bitrates.

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 image we observed very good, coloured area conversion. However, black and white areas are not as well reproduced, but still within acceptable boundaries, since we are using higher compression methods.

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

As with MPEG-2 format, we used this image to check the colour distortion of the converter when MPEG-4 format is used. We were amazed with the result, since even DivX LP and MPEG-4 Extended Play profiles produced great 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 darker image, small distortion was observed, but again we observed great results.