The short answer
Use a data-disc project to store ordinary video files for a device that reads them. A traditional DVD-Video disc needs a separate supported authoring step; adding MP4 files to a data DVD does not perform it.
Start with where the disc will play
For storage or transfer between computers, a data DVD can hold video files just like other data. Playback still depends on the computer or device understanding each file’s format and codecs.
A standalone DVD player may require an authored DVD-Video structure and compatible video encoding. Do not assume it will play an MP4 simply because the file fits on a blank DVD.
Choose the supported project type
The current CyberPower Disc Creator offers data-disc and supported image workflows. Use the appropriate data task when your goal is storing files. This page does not advertise a complete DVD-Video authoring workflow in the current release.
For a traditional playable DVD-Video, use a workflow that explicitly authors the required structure, including a valid VIDEO_TS layout. Confirm the resulting format before choosing a burning operation.
Review the writer, media and destination player
Check the selected optical writer, blank media type and available capacity. Keep the source files and wait for writing to complete before removing the disc. Test it in the actual player, not only in File Explorer.
Need a different video file first? Use the video conversion guide. For music in a CD player, see the separate audio-CD workflow.