MPEG

The .mpeg file extension is used for a digital video file format that was developed by Moving Pictures Experts Group. Based on MPEG-1 video format, these MPEG files are normally used for storing digital movies and animated clips in VCD (video CD) quality. The content of an MPEG file is digital video that has been encoded in MPEG-1 format. This video data is normally at 30 fps (frames per second) and in a resolution of 352x240.

- - File.org

MP4

MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The only official filename extension for MPEG-4 Part 14 files is .mp4. MPEG-4 Part 14 (formally ISO/IEC 14496-14:2003) is a standard specified as a part of MPEG-4.

- - Wikimedia

Step-By-Step to Convert MPEG to MP4

Interface

Step 1. Download and install the program, then double click it to run it, and then you'll see the main interface of the program.

Load Files

Step 2. Click "Add File(s)" button. Here you can select "Add Video" or "Add Folder" button to add files as you like.

Profile

Step 3. Click the drop-down arrow right beside the "Profile" column and select your desired video format from the drop-down list.

Edit

Step 4. Click "Edit" button to customize the output video like Effect, Trim, Crop, 3D Settings and Watermark.

More Reading