AVI to MPG Converter

AVI vs MPG: Which Do You Actually Need?

Almost everyone who lands on this conversion is trying to feed a video into something old and particular — a DVD-authoring suite, a kiosk, a broadcast ingest folder, or an editing system that only reads MPEG program streams. That is the one case where MPG is the right answer. The short version: if a specific piece of software or hardware asks for .mpg, convert; if you simply want an old AVI to be smaller and to play everywhere, convert it to MP4 instead, because MPG will make the file bigger and slightly softer, not better. Files are uploaded over an encrypted connection, converted on our servers, and deleted automatically a few hours later.

AVI and MPG Side by Side

When to Pick MPG

• A DVD-authoring program, disc-burning suite or set-top recorder specifically lists MPEG-1/MPEG-2 program streams as its input.
• An older non-linear editor or hardware ingest station rejects your AVI's codec but accepts MPEG-2.
• A delivery spec literally names .mpg or .mpeg — the two extensions describe the same container.
• You are recreating a Video CD or a period-accurate disc image and need MPEG-1 at VCD parameters.

When to Stay on AVI, or Go to MP4 Instead

• You want the file to be smaller. MPEG-2 is substantially less efficient than the MPEG-4 ASP video already inside most AVIs, so an MPG at matching quality is usually larger, not smaller.
• You want it to play on a phone, in a browser or in a messaging app. Nothing modern plays .mpg natively; AVI to MP4 is the format that does.
• You only need a smaller version of the same file — the video compressor re-encodes in place without dragging the video back to a 1990s codec.
• Your AVI is already going into a modern editor. Most of them open AVI directly; converting first only costs a generation of quality.

MPEG-1 or MPEG-2?

Both live in the Video Codec dropdown, and the choice is dictated by the destination, not by taste.

How to Convert AVI to MPG

1. Upload Your AVI File: Drag your file onto the page or click "+ Add Files" to add one or several. Queued files all convert with the same settings.
2. Pick the Video and Audio Codec: In Advanced Options, Video Codec is set to MPEG-2, which is what disc authoring expects; switch to MPEG-1 only for Video CD work. Audio Codec is set to MP2, with AC3, DTS (DCA) and MP3 available.
3. Set Quality, Resolution and Trim (Optional): File Compression opens on the Very High (Recommended) Quality Preset; switch to Constant Bitrate, Constant Quality or Specific file size if a spec dictates a number. Video resolution can stay on Keep original or be conformed with Preset Resolutions, and Trim takes a Time Range.
4. Convert and Download: Click Convert and save the .mpg. No sign-up, no watermark.

Frequently Asked Questions

Is MPG the same thing as MPEG?

Yes. .mpg and .mpeg are two spellings of the same MPEG program stream container, a leftover from the era when Windows filenames allowed only three-letter extensions. Some tools prefer one spelling, which is the only reason to pick between them; the bytes inside are identical. The related .m2p and .ps extensions describe the same thing too, and DVD's .vob files are program streams with disc-specific structure layered on.

Does this produce MPEG-1 or MPEG-2 video?

MPEG-2 unless you change it. That is the safer general answer because DVD-Video, most disc-authoring tools and most legacy ingest systems expect MPEG-2 inside a program stream. MPEG-1 is there for Video CD work and for older devices that predate MPEG-2; it is progressive-only and less efficient, so there is no reason to choose it unless something specifically requires it.

Can I burn the output straight to a DVD?

It is the right starting point, but the disc format has extra rules your authoring program enforces. DVD-Video allows MPEG-2 video up to 9.8 Mbit/s (or MPEG-1 up to 1.856 Mbit/s) at 720 x 480 for NTSC and 720 x 576 for PAL, so authoring software such as DVDStyler will re-multiplex and may re-encode if your resolution or bitrate falls outside those bounds. Conforming the picture size with Preset Resolutions before you convert saves the program that extra pass.

Which audio codec should I pick for a disc?

DVD-Video permits PCM, Dolby Digital (AC-3), DTS and MPEG-1 Audio Layer II, and PAL-region releases must carry at least one track in PCM, MP2 or AC-3. MP2 — the default here — is the safe, spec-native choice, and AC3 is the safer bet if the disc is aimed at NTSC-region players. Note that MP3, though offered in the dropdown, is not a DVD-Video audio format, so avoid it for anything disc-bound.

Will I lose quality converting AVI to MPG?

Yes, some. The server always re-encodes, and MPG can only carry MPEG-1 or MPEG-2 video, so whatever sits inside your AVI — usually MPEG-4 ASP, sometimes H.264 — is decoded and re-compressed with an older, less capable codec. Keeping the source resolution and frame rate and choosing a high Quality Preset or a generous bitrate keeps the damage small; shrinking the picture and squeezing to a small target file size in the same pass is what makes it obvious.

Why is my MPG larger than the AVI it came from?

Because MPEG-2 needs more bits than the codec you started with to reach the same picture quality. That efficiency gap is the whole reason MPEG-4 and then H.264 replaced it. If the growth is a problem and the destination is not a disc, that is a strong sign MPG is the wrong target — AVI to MP4 will be smaller than both.

Can I convert the MPG back to AVI later?

Yes, MPG to AVI runs the other direction, but understand that it is a fresh re-encode rather than a recovery. Detail lost on the way into MPEG-2 does not come back, so round-tripping AVI to MPG and back is always slightly worse than the original. Keep your source AVI if it still has any archival value.

What happens to my files after the conversion?

Your AVI is uploaded over an encrypted connection and converted on our servers; the upload and the finished MPG are both deleted automatically a few hours later. There is no sign-up, no watermark, and files are never shared or made public. With MPEG-2 output being on the large side, the practical thing to plan around is upload and download time rather than anything on our end.