Should I convert mpeg/wmv files to another format then burn to DVD??

What program will you be using to create the DVD? If it is Adobe Encore you should not have to, that is the only program I have worked with to burn DVD's.

Whatever you render your video out to, the software that burns your DVD's will convert them to MPEG2 for video and AC3 for audio (assuming no Dolby 5.1).

If you were to copy the VOB files from your DVD's to your hard drive and rename them *.MPG, they will play on your PC just like any other MPG2 file.

So to answer your question, if your target is DVD, render to MPEG2.

Like Charles mentioned, with Encore you can use almost any video format. I use H.264 to save space, but it should be done in MPEG2 DVD because it separates the video and the audio (which is good if you want to have two different audio selection)

To burn a DVD that you want to play on commercial DVD players, you have to use the mpeg2 codec. Even if you export your video in another codec, such as h.264, the authoring program you use (Encore, DVD Studio, any of them) will re-compress your footage to mpeg2 because that is the only codec that DVD players recognize.

So to answer your question, always export your footage initially to mpeg2 DVD other wise you will just be compressing your footage twice and possibly compromising the visual quality of your video. By the way, the mpeg2 extension most often looks like .m2v, and only holds the video. The audio should automatically come out separately as a wav or AC3 file depending on the program you use to export it.

'Lovebaseball', the DVD-standard calls for mpg2 as the format, so converting to anything else, simply means that the material will, ultimately, be converted back to mpg2 in any case. If youwish to preserve as much quality as possible, set the 'quality', if it is adjustable, fairly high. That way, you will achieve the best possible resultsat the expense of slightly bigger files. I usuallyuse variable bit-rate and 'double-pass'. That way you can push the upper setting to 9200 and let the bottom setting 'float', giving an average which still squeaks into the DVD-standard. However, if time (processing, that is), is 'of-the-essence' do not attempt double-pass, just bash the stuff through the processand settle for what comes-out.

If you're using Windows XP, Windows Movie Maker is included with the OS (and as a d/l with Vista/7), and with k-lite installed it should find the codecs for dealing with MPEG and WMV. That, if nothing else, should give you some options on compression/quality before a burn. I use DVD Creator, which should work fine for you, doing conversion and burning all in one place.source: http://www.ilikemall.com/convert/burn-wmv-to-dvd.html