making a playable DVD for a DVD player

Again, it should work with the file that Movie Maker creates assuming you have placed a single .mp4 file on the disc. Panasonic is the manufacturer. What's the specific model number? Try searching to see if there are issues with .mp4 files on that model.

If you do use *DVD* authoring software, you'll reduce the resolution. So try to stick with .mp4. You might try using your conversion software to see if there is a universal H.264/AVCHD format that it can convert the .mp4 to.

Hey thanks for all your help !!! . I can play the MP4 file on my PC and on hard disc. But no luck in the Player a Panasonic Blue ray. Anyway, i think i may have it solved, someone said i need an authoring software.. so I will try this... thanks again..

The disc containing just the .mp4 file should play. First verify the .mp4 that was initially created on the PC plays from the hard disk. 

Next, try that disc in the PC. Does it play from the disc on the PC? Note: you may have to navigate to the disc and select the file directly, depending on your auto-play settings.

Now do you have access to another PC? If so, does it also play the movie? 

Finally, what's the make/model of the Blu-Ray player? Does it give an error when you try to start the disc?

Many thanks Considerate_guy !!!   that was very helpful. I googled a lot and did not find this explained. I have tried the previous MP4 file in my player which is Blue ray. It didnt play. ?.... I guess what you are saying is I need to buy software to Author a disc ??? any suggestions ?  When I get that are you saying Im better to burn it as a authored Mp4 file ?  many thanks.. They dont make these sort of things easy !  cheers

Let's start with a little history. The DVD format was developed in the late 1990s before HDTVs had become widely adopted. The video DVD format therefore has a maximum resolution of 480p (standard definition). The video file format is MPEG-2 stored in .vob files but in addition, in order to be seen as a playable DVD, you need several support files (for menus, special features, chapter screens, etc.) and there is a specific file/folder structure that must be followed.

So your first attempt to put the .mp4 files onto the disc won't make a disc that can play in a DVD player because they are HD MPEG-4 video files not understood by a DVD player which only understands SD MPEG-2 video files. However, if you had a Blu-ray player, another PC or a game console that understands MPEG-4 video, you could actually play that video there and it would have been in HD format to boot.

Your second attempt was to reduce the resolution and transcode the video to a .vob file. But again without following the correct folder structure with the requisite support files, the DVD player won't understand what is there.

Personally I would stick with playing the disc on a Blu-ray player to enjoy the HD resolution. Barring that, you'll want to look for software that actual is designed not just for file conversion, but can actually author a video DVD in the correct format.