Assuming you have everything correct and you are using HD:
If you are creating MP4 H.264 HD under Produce create a custom 1920x1080 profile and increase the bitrate from 15.5m to 30m and check the framerate is same fps as your GoPro clips. Made a big difference to my GoPro output quality.
Use Mediainfo (free download) to compare original GoPro MP4 clips with PDR13 MP4 file info.
Al
This message was edited 1 time. Last update was at Sep 09. 2015 15:55
Power Director 13&14 Ultimate, Photo Director 6, Audio Dir, Pwr2Go 10
Win 10 64, Intel MB DH87MC, Intel i5-4670 CPU @ 3.40GHz, 16Gb DDR3 1600, 128Gb SSD, 2x1Tb WDBlue 7200rpmSATA6, Intel 4600 GPU, Gigabyte G1 GTX960 4GB, LG BluRay Writer