MPEG-2 to WebM Converter
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Supports: MPEG2
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This tool re-encodes an MPEG-2 video — the DVD-and-broadcast-era format (ISO/IEC 13818, also standardized as ITU-T H.262) — into a WebM file using the VP9 codec and Opus audio by default. The point is reach and size: MPEG-2 won't play inline in a browser, while WebM does, and VP9 packs the same footage into a far smaller file. It is the practical way to put old DVD-era clips on the modern web in a fully open format. If your source is the generic .mpeg program stream rather than an explicit .mpeg2 file, use the MPEG to WebM sibling instead.
How to Convert MPEG-2 to WebM
- Upload Your MPEG-2 File: Drag and drop or click "+ Add Files" to select one or more
.mpeg2clips. Batch conversion is supported — every file uses the same settings. - Pick a Quality Preset: Under File Compression the default Preset is "Very High (Recommended)", which keeps the result visually close to the source. Step down to High, Medium, or lower to shrink the file, or set a Specific file size and let the encoder hit it. The output codec is VP9 with Opus audio.
- Set Video resolution (Optional): Keep the original dimensions, scale with Resolution Percentage, choose a Preset Resolution, or enter a custom Width x Height. Aspect ratio is preserved automatically — handy for rescaling 480i/576i DVD footage to a web-friendly size.
- Convert and Download: Click "Convert". Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared.
MPEG-2 vs WebM — What Changes in the Conversion
| Property | MPEG-2 (source) | WebM (output) |
|---|---|---|
| Standard | ISO/IEC 13818, ITU-T H.262 (mid-1990s) | WebM container (Matroska-based), open and royalty-free |
| Default codec here | MPEG-2 video | VP9 video + Opus audio |
| Container | MPEG program stream | WebM (VP8/VP9/AV1 + Vorbis/Opus) |
| Typical scan | Often interlaced (480i / 576i from DVD & broadcast) | Progressive, as delivered for web |
| Chroma / bit depth | 4:2:0, 8-bit (Main Profile) | 4:2:0, 8-bit (VP9 Profile 0) |
| Compression efficiency | Older; less efficient than H.264/HEVC | Modern; VP9 is markedly more efficient |
| Typical size, equal quality | ~5x larger than H.264 MP4 | Smaller than MP4 — VP9 runs roughly 25-40% under H.264 |
| Plays inline in browsers | No native support | Yes — Chrome, Firefox, Edge, and Safari 16+ (~96% of browsers) |
The headline: WebM with VP9 is dramatically smaller than MPEG-2 at the same visual quality and, unlike MPEG-2, plays directly in a <video> tag. The trade-off is that this is a re-encode between two lossy codecs, so the output can match the source but never improve on it — and DVD-era interlacing needs a moment of attention (see the FAQ below). If you need an H.264 file instead of WebM — for broader device support or an editor that prefers MP4 — use MPEG-2 to MP4.
Frequently Asked Questions
Will converting MPEG-2 to WebM lose quality?
Some, yes — this is a re-encode, not a re-wrap. MPEG-2 is already a lossy codec, and VP9 is a different lossy codec, so the footage is decoded and re-compressed, which adds a second generation of loss on top of whatever the MPEG-2 stream already discarded. With the default "Very High" preset the difference is hard to spot in normal viewing, but the output can only ever match the source, never exceed it. Upscaling the resolution just enlarges existing pixels; it doesn't recover detail the MPEG-2 never held. There is no lossless path from MPEG-2 to WebM because the codecs are fundamentally different.
My DVD-era MPEG-2 has interlaced footage — will the WebM look combed?
It can, if the source is interlaced (most DVD and broadcast MPEG-2 is 480i or 576i) and the field order isn't handled. Interlacing stores two half-frames per frame; on a progressive web player those fields can show as horizontal "combing" on motion. For clean web output the footage should be deinterlaced to progressive frames. If your converted clip shows combing on movement, that's the cause — deinterlace the MPEG-2 first (many DVD-ripping and editing tools do this), then convert the progressive result to WebM here.
Why is the WebM so much smaller than the MPEG-2?
Because VP9 is a far more efficient codec than MPEG-2, which dates to the mid-1990s and predates H.264 by roughly a decade. At equal visual quality an MPEG-2 stream is commonly around five times the size of the same content in H.264 MP4, and VP9 typically lands another 25-40% smaller than that H.264 file. So moving DVD-era MPEG-2 to WebM can shrink it substantially while keeping the picture close to the original — the efficiency gap is the whole reason this conversion is worth doing for the web.
Should I convert MPEG-2 to WebM or to MP4?
Pick WebM (this page) for the open web: it is royalty-free, plays inline in Chrome, Firefox, Edge, and Safari 16+, and VP9 gives the smallest file of the common options. Pick MP4 when you need the widest device and editor compatibility — older smart TVs, some hardware decoders, and a few editing apps handle H.264 MP4 more reliably than WebM. A common pattern for web pages is to serve WebM as the primary <source> with an MP4 fallback, so you may want both.
Will the audio survive the conversion to WebM?
Yes, if the MPEG-2 carries an audio track it is re-encoded to Opus, the default WebM audio codec, and stays in sync with the video. MPEG-2 video is typically paired with MP2 or AC-3 (Dolby Digital) audio on DVDs; both are decoded and converted to Opus during the process. In our testing, a 60-second DVD-sourced MPEG-2 clip at the default preset produced a WebM file a few MB in size with audio intact. If you later need to shrink it further, run the result through Compress WebM.