Hi Jeam -
It's quite impossible to burn a DVD without losing quality, unless your original MP4 is standard definition (not HD) or you burn an AVCHD DVD (which requires a BR player).
If your souce MP4 is 1920x1080, you'd be able to burn a BR disc without sacrificing too much.
I rarely burn discs, preferring to play the videos directly to my 4K TV or monitor, via USB stick or external hard drive.
Cheers - Tony
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