I have used several VHS Players and have selected every video standards in the list in both Pal and NTSC. There are horizontal lines along the top of the video preview screen. I am playing both NTSC and PAL videos. I am also using several different players that are PAL players that also play NTSC videos. The wavy lines are consistent regardless of whether i am previewing NTSC or PAL videos.
The video standard for South Africa is PAL I.
The video tapes are in excellent condition and several are new. There is absolutely no issue with the quality of the video when the players are connected to the TV.
The problem persists whether a PAL tape is played or an NTSC tape is played. In fact, I connected an NTSC player to the software and played an NTSC tape through it and the problem still exists.
This wavy video problem is software related specific to Rescue Your Video Tapes.