Issue when playing the point of joint of two video segments. How to fix it?

[cypherinfo]

Hello,
I'm using the Aiseesoft Ultimate video converter for trimming/joining my DVB records. Generally speaking, I merge the two or more segments of the .vob files of my recorder and then I trim the resulting file.
I have noticed that when I play the point where the two segments of the video are joint, there is a little interrupt that breaks the smooth of the video, making it of poor general quality.
I have tried all of the processes available with that application and I have found that the only one to reduce the number of those little visible interrupts is the one you may see in the video I recorded the process I use in order to show you what I mean: https://youtu.be/WKQBDamLRsE
I wonder what is the best way or free application for fixing or making the process above without any issue.
Thank you.

[sneaker]

Are these supposed to be a single, continuous recording?

Read this and follow the instructions below "Using the Windows copy command". Then try to load that file in your software.

[cypherinfo]

Yes, they are the same continuous recording.
It worked!

Thank you