Possibly the problem is you are using DVD-RW disc and your player does not like rewritable discs. Try a DVD-R disc
All Blu-ray players can play regular DVDs, there is no need to convert to DivX
What type is the video file you have that you want to burn to a DVD to play?
I don't think any 'extras' toolbars etc come with them from filehippo site, but as with any Free Program - always do a custom install and untick/deselect any 'extras' and freebies/ toolbars etc.