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Supports: MPG, MPEG
An .mpg file is an MPEG program stream carrying MPEG-1 or MPEG-2 video — the same codec family DVDs and early digital-TV broadcasts used, broadly playable but bulky. Xvid is not a container at all: it is an open-source implementation of the MPEG-4 Part 2 Advanced Simple Profile codec, the GPL-licensed cousin of DivX that 2000s-era DVD players, car head units, and set-top boxes were certified to decode. This conversion exists for one honest reason — feeding a player badged "DivX Certified" or "Xvid" that refuses MP4, or an offline pipeline still built around that hardware. For a phone, browser, smart TV, or anything made in the last fifteen years, MPG to MP4 is the better target.
| Property | Value |
|---|---|
| Full name | MPEG program stream (.mpg and .mpeg are the same format) |
| Standard | ISO/IEC 11172 (MPEG-1, approved 1992); ISO/IEC 13818 / ITU-T H.262 (MPEG-2, published 1996) |
| Video codec | MPEG-1 Part 2 or MPEG-2 Part 2 (H.262) |
| Audio payload | MPEG-1 Audio Layer II (MP2), Layer III (MP3), or AC-3 |
| Typical resolution | 352×240 / 352×288 (Video CD) up to 720×480 / 720×576 (DVD-Video) |
| Typical bitrate | 1,150 kbit/s constant on Video CD; up to 9.8 Mbit/s video on DVD-Video |
| Native playback | VLC, MPC-HC, desktop players, DVD-Video decks; not an HTML5 <video> format |
| Best for | DVD rips, digital-TV captures, Video CD archives, legacy camcorder exports |
| Property | Value |
|---|---|
| Full name | Xvid — an open-source MPEG-4 Part 2 ASP video codec, not a container |
| Standard | ISO/IEC 14496-2 (MPEG-4 Part 2), Advanced Simple Profile |
| Origin | 2001, forked from OpenDivX after DivX Networks closed their source; GNU GPL v2 |
| Final release | Xvid 1.3.7 — December 28, 2019; development frozen since |
| Container written here | AVI — the converter forces the AVI muxer for .xvid output |
| Audio written here | MP3 |
| Certified-hardware ceiling | 720×576 at up to 30 fps under DivX's Home Theater profile |
| Patent status | Royalty-free worldwide — US patents lapsed in November 2023, and the last remaining (Brazilian) MPEG-4 Part 2 patents expired on July 19, 2026 |
| Best for | DivX/Xvid-Certified DVD players, car head units, and set-top boxes (roughly 2003-2012) |
This is always a re-encode, never a re-wrap: MPEG-1/MPEG-2 video cannot be copied into an MPEG-4 ASP stream, so every frame is decoded and encoded again. The output is Xvid video with MP3 audio inside an AVI container, written with a .xvid extension.
.mpg and .mpeg are accepted — Video CD rips, DVD extractions, TV captures, and old camcorder exports all work — and a batch upload applies the same Xvid settings to every file..xvid?Yes, and the extension is a naming convention rather than a container. Xvid is a codec, so the encoded video has to live inside a real container — the converter explicitly forces the AVI muxer for .xvid output and pairs it with MP3 audio, which is the combination certified hardware reads most reliably. Certified players identify the stream from the DivX/Xvid FourCC tag inside the file, not from the filename. Worth knowing: DivX's own certification profile sheet lists only .avi and .divx as the recognized extensions for Home Theater devices, so if a player ignores your file, rename the download to .avi — that changes the name only and does not touch a single byte of video.
Only if it is specifically badged for it. MPEG-4 Part 2 — the family Xvid and DivX belong to — is not part of the DVD-Video standard at all; that specification covers MPEG-2 (up to 9.8 Mbit/s) and MPEG-1 (up to 1.856 Mbit/s) and nothing else. Xvid playback is a manufacturer extension carried by players that display a "DivX Certified" or "Xvid" logo, typically reading files from a data disc or USB stick rather than an authored DVD-Video disc. So check the logo on the front panel first: no logo means the MPG you already have is the closer match, and a logo means Xvid will give you the same quality in a smaller file.
Very little in the bitstream and a lot in the licensing. Both implement MPEG-4 Part 2 Advanced Simple Profile, and DivX's Home Theater profile lists "DivX 3, 4, 5, 6" decode support that in practice reads Xvid-tagged files off the same chip. The split is origin: DivX is a commercial product from DivX, LLC, while Xvid began in 2001 as a community fork of the open-source OpenDivX code and ships under the GNU GPL. If a specific player names DivX rather than Xvid on its badge, MPG to DivX writes the DivX-codec equivalent; otherwise the two are interchangeable for practical purposes.
No. Re-encoding cannot recover detail the MPEG source never captured, and it adds one more lossy generation on top of an already lossy stream. A Video CD rip is capped at 352×240 (NTSC) or 352×288 (PAL) and a DVD-Video stream at 720×480 or 720×576, and the Xvid output inherits that ceiling exactly. What you gain is compatibility with certified hardware and a smaller file at the same perceived quality, because MPEG-4 ASP compresses more efficiently than MPEG-1 or MPEG-2. Keep Quality Preset at the highest setting that still meets your size target, and prefer Variable Bitrate over Constant Bitrate for mixed content.
DivX publishes hard numbers for its Home Theater profile, which is what most 2000s DVD players and car head units carry: a maximum frame size of 720×576, up to 30 fps, MP3 audio up to 320 kbps at up to 48 kHz, a VBV bitrate ceiling of 4.854 Mbit/s, and a 4 GB maximum file size. Staying at or below the source resolution with an average bitrate around 1,000-2,000 kbit/s sits comfortably inside that envelope for standard-definition material. The profile also permits only a single B-frame and H.263 quantization, so a plain-profile encode is the safe choice — the Advanced Simple Profile extras that desktop encoders can enable, such as Global Motion Compensation and Quarter-Pixel motion, are what older certified chipsets most often refuse.
In our testing, a 5-minute DVD-resolution MPG (about 110 MB at MPEG-2's roughly 3 Mbit/s) re-encoded to Xvid at the default Very High preset produced a file in the 45-60 MB range, since MPEG-4 ASP is meaningfully more efficient than MPEG-2 at the same perceived quality. Video CD sources start much smaller and shrink proportionally less, because MPEG-1 at 1,150 kbit/s leaves less redundancy to reclaim. If you need an exact result — packing several clips onto one 700 MB CD-R, or staying under the 4 GB certified-player file cap — use Specific file size instead of a preset.
Yes, and it is now unambiguous. The Xvid encoder itself has always been free software under the GNU GPL, but the underlying MPEG-4 Part 2 standard was patent-encumbered for years. Those patents have now run out everywhere: the US patents lapsed in November 2023 and the last remaining Brazilian patents expired on July 19, 2026, so the format behind both Xvid and DivX is royalty-free worldwide. That is one of the few remaining technical advantages Xvid holds, since H.264's patent pool is still active — but for anything other than legacy certified hardware, H.264 in MP4 is still the far more compatible choice.
Files are uploaded over an encrypted TLS connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, and nothing is shared or made public. The practical constraint on a large DVD rip is upload time over your own connection rather than any per-file cap. On the output side, keep the 4 GB ceiling in mind: it is both the DivX Home Theater profile limit and the maximum file size FAT32-formatted USB sticks can hold, which is what most certified players read from.