What is MPG?
MPEG-1 is a standard for lossy compression of video and audio. It is designed to compress VHS-quality raw digital video and CD audio down to 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making Video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) possible.
Today, MPEG-1 has become the most widely compatible lossy audio/video format in the world, and is used in a large number of products and technologies. Perhaps the best-known part of the MPEG-1 standard is the MP3 audio format it introduced.
What is AVI?
Audio Video Interleave, known by its acronym AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows technology. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback. Like the DVD video format, AVI files support multiple streaming audio and video, although these features are seldom used. Most AVI files also use the file format extensions developed by the Matrox OpenDML group in February 1996. These files are supported by Microsoft, and are unofficially called “AVI 2.0″.
There is slight overhead when used with popular MPEG-4 codecs (Xvid and DivX, for example), increasing file size more than necessary. The AVI container has no native support for modern MPEG-4 features like B-Frames. Hacks are sometimes used to enable modern MPEG-4 features and subtitles, however, this is the source of playback incompatibilities.
Why we need Convert MPG to AVI?
MPG supports for interlaced video and can contain high compressed movie content while produces good quality. However, despite MPEG/MPG functionality, it’s probably not the compatible format when it comes to playing mpeg video on a majority of devices and video players like PS4, Xbox, other media players etc. Luckily, AVI is such a format fit for nearly every occasion. 
You probably have an mpeg movie in your media collection, but you want to convert those MPEG to AVI file to watch on your mobile phone, tablet wherever you are. There are a variety of different MPEG/MPG video conversion programs out there, but our favorite method uses a program.
Hot search: MPG to FCP X * MPG to MP4 * 3 ways to play AVI
Get the Best MPG to AVI Video Converter
You can achieve your goal with the help of the simple-designed but professional app, Pavtube Video Converter. With it, just within three clicks you can do MPG to AVI conversion successfully. if you are a Mac user, you can get Pavtube Video Converter for Mac to convert MPG to AVI on Mac freely.
- Three simple clicks to convert MPG to AVI without quality loss.
- Edit MPG files before converting them to AVI. You can crop, trim, rotate, add effects/watermarks/subtitles to your MPG videos.
- Change the parameter settings of your MPG/AVI videos.
- Extract audio from your MPG, AVI or any video to MP3, WAV, WMA, AC3, AAC, AIFF, etc.
- Batch conversion and super fast conversion speed.
- Compatible with Windows 10/8/7/XP/Vista, macOS 10.12 Sierra, 10.11 El Capitan, 10.10 Yosemite, 10.9 Mavericks, 10.8 Mountain Lion, 10.7 Lion and 10.6 Snow Leopard.
Free download the best MPG to AVI Video Converter for Windows:
Step 1. Load MPG files to the program
Launch the Converter. Drag & drop MPG files to the program. Or just go to the “File” menu, choose “Load Files” to locate the MPG files you want to add. To merge video segments, toggle “Merge” option on at the bottom. 
Step 2. Select “AVI” as the output format
Just go to the format drop-down list, choose “AVI” as the output format from “Common Video” or “HD Video”. Or you can choose “PSP” or “Xbox” or other corresponding device as the output format. 
Tips: To ensure the output AVI videos fit well on your devices, the once for all method is choosing the device as the output video format. The video settings, like video resolution, bit rat and frame rate have been optimized beforehand for you.
Step 3. Start MPG to AVI conversion
Hit the “Convert” button and let this smart Video Converter convert MPG video to AVI video for you. If you are busy with other stuff, you can set “shut down my computer after the conversion.”
