DVD making, .vob files cannot be read on player

[bibi_sym]

Hello!
I'm trying to burn some videos on a dvd, the videos are .avi files that i converted into video_ts folder to burn into a DVD. I'm using DVDStyler program.
I have a total of 7 videos burnt on the dvd, but only the first 5 are readable, when we reach the 6th file the player says "incompatible format". I don't understand what I am doing wrong as all the videos were converted into the video_ts folder, which can be perfectly played on pc. All of them should be the same format, so why would my player be able to play 5 out of 7 videos?

Also if you have a good freeware dvd maker to recommend me, i've tried DVDFlick and Freemake Video Converter with no success. And honestly don't know if my current software is the cause of my failure

As I have limited amounts of DVDs i cannot afford to mess up again, so i hope you will help me. Thanks for your time !

[hech54]

It's probably a PAL vs. NTSC issue if you are in America.

[Baldrick]

Maybe crappy dvdr media? So it can't read the "end" of the dvdr.

I like avstodvd and burning with imgburn(be careful with the adware installer).