The file that I choosed is MPEG-4 Movie, and I tried to converter the same file by the two programs.
I choosed the same parameters, but the elapsed time of the two programs (HD Video Converter and PSP Leawo Converter)were diferent.
PSP Leawo Converter and HD Video Converter parameters
File: MPEG-4 Movie
(Only HD Video Converter parameter) Color Saturation: 10
Profile: PSP AVC Video (480 x 272) (*.mp4)
Video Quality: Medium
Audio Quality: Medium
PSP Leawo Converter elapsed time: 45 min.
Estimated Size: 164 mb.
HD Video Converter elapsed time: Five hours.
Estimated Size: 110mb.
When I choosed "Enable Quicktime", HD Video Converter showed me that he need five hour to transform one video file (MPEG-4 Movie).
I have no problem with AVI Video.