Why in Handbrake ? Not in Any video Converter

[ausrob]

Hello
I have put the same video through both Handbrake and Any Video Converter for the purpose of adding Subtitles and ability to play on DVD player.
Prefer Handbrake as subtitles can be hard (burned in) or soft (switchable on or off)
The conversion runs OK through both programs but the Handbrake version now has problems with the video breaking up.
Wondering if there are settings in Handbrake that may stop this happening
Following link is to folder with 3 small video clips
m2ts is the original , mkv is the handbrake (with problems) and mp4 is the AVC version (no problems)
The picture breaks up when the character stands up from the sofa
I have also used mp4 through Handbrake and problem remains

https://www.dropbox.com/sh/63r0rtqj26vto2e/AAAI75R504Pu9H8RpmRaD9rZa?dl=0

As always any advice from you guys will be greatly appreciated
Rob

[sneaker]

ffmpeg complains at that point:

[h264 @ 0000000000436120] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000000004b0c700] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one

ffmpeg can handle this error but it seems HandBrake does something special which results in a visible problem. Report to HandBrake developers.
https://github.com/HandBrake/HandBrake/issues

A workaround would be to use HW decoding but DXVA got removed at 1.0 because it was too buggy. I believe QuickSync decoding is activated by default so I assume your PC doesn't have it. But you can check in settings to be sure. (Requirements are listed there.)