Step 1: Supply your MPEG files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted WebM files.
MPEG to WebM Conversion FAQ
What does the MPEG to WEBM converter do?
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MPEG is a legacy container, often poorly supported on modern devices. Converting to WEBM rewraps the video with a current codec (H.264 / H.265 / VP9) for broad browser, phone, and TV compatibility.
Will resolution and frame rate be preserved in the WEBM?
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Yes. MPEG → WEBM keeps resolution, frame rate, and aspect ratio unchanged by default. To change them, use the Resize or Speed tool on the result.
Will the MPEG play smoothly on modern devices after converting to WEBM?
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Yes. Legacy MPEG files often fail to play in modern browsers and on iOS / Android. WEBM uses widely supported codecs that play natively on phones, tablets, smart TVs, and every modern browser.
Will the converted WEBM be a different size than the MPEG?
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Modern codecs compress better, so WEBM from a legacy MPEG is typically 30-60% smaller at equivalent quality. Conversions in the opposite direction can grow the file.
My MPEG footage shows comb lines on movement — will that carry into the WEBM?
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It will unless you deinterlace, and MPEG content very often is interlaced because the format comes from the broadcast and DVD era. Interlaced frames store two half-height fields captured a fiftieth of a second apart; on a progressive-scan phone or monitor that reads as horizontal combing on anything that moves. Turn on the deinterlace option and the encoder weaves the fields into whole progressive frames before writing the WEBM. MPEG here means an MPEG-1 or MPEG-2 program stream, the format standardised for Video CD and then for DVD and broadcast television.
Can I add selectable subtitles once the file is WEBM?
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Yes. MPEG has no usable soft-subtitle track, so subtitles for MPEG content had to be burned into the picture or shipped as a separate sidecar file. WEBM carries subtitles as their own selectable stream, so after conversion you can attach an SRT track the viewer can switch on, switch off or restyle. WebM is deliberately narrow: VP8 or VP9 video (AV1 more recently) with Vorbis or Opus audio, and nothing else.
Is WEBM worth targeting for a video on a web page?
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For a page you control, yes. WEBM was built for exactly that job — it plays inline in every current browser with no plugin, no licence fee and no patent exposure, which is why it became the default for embedded and background video. Away from the browser it is the weaker choice: editing software, phone galleries and televisions largely ignore it, so it is a delivery format rather than a storage one. Keep the master in something else and publish this. WebM plays natively in every modern browser with no plugin, no licence fee and no patent exposure, which makes it the default for web-embedded video.
My MPEG has several audio tracks — do they all survive into the WEBM?
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Not dependably. MPEG stores multiple audio streams as first-class tracks, but WEBM playback support past the first track is inconsistent, so most players will only ever expose one. Choose the track you actually want before converting; the others are better extracted to their own files than left in a container that hides them. MPEG program streams are decoded by literally every DVD player, set-top box and broadcast chain ever built, and they tolerate bit errors gracefully. WebM is a poor fit anywhere outside a browser — video editors, phones’ native galleries and Smart TVs largely ignore it.
What should I watch for converting an MPEG from a disc or a broadcast recording?
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Interlacing and aspect ratio, in that order. Material made for television is interlaced almost without exception, so deinterlacing has to be on or every moving edge arrives combed; and a great deal of it is stored as non-square pixels with a flag saying how wide to display it, which a converter that ignores the flag turns into a stretched or squashed WEBM. Check the first few seconds of the output before running a batch — both faults are obvious immediately and invisible in the settings.
Will the WEBM play in a browser when the MPEG would not?
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Yes, and that is usually the whole reason for the conversion. An MPEG embedded in a web page either shows a broken player or forces a download, because browsers ship no decoder for it. WEBM plays inline through the native HTML5 video element with no plugin and no external application.
Is there a file-size limit when converting MPEG to WEBM?
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Anonymous uploads are capped at a generous default; signed-in free accounts get a higher cap, and Pro accounts have no per-file limit. Browser memory is usually the practical constraint long before our server-side limits kick in.
Can I batch-convert several MPEG files to WEBM at once?
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Yes. Drop or pick multiple MPEG files in one upload — the converter processes them in parallel and returns a ZIP of the WEBM results. There is no need to repeat the upload step per file.
