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Convert WebM to MP4 Online — Free WebM to MP4 Converter

Convert WebM videos to MP4 format. Perfect for sharing browser recordings and web videos anywhere.

MP4, MOV, AVI, MKV, WebM

Fast No watermark
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Your Hashtags Are Ready!

Hashtags copied to clipboard — paste them in your post!

Timings preserved Free to try

Conversion Complete!

Preview below. Download your file whenever you like.


                    

Translation Complete!

Preview below. Download your file whenever you like. Timecodes are preserved.


                    

AI
Examples:

Platform

Duration

Audience & tone Optional

Free account required to use this tool. Sign up in seconds!

Your Video Script

Video duration
Minutes required
Minutes used / limit
Minutes remaining
Estimated balance after (min)

Quota is based on full video duration. Queued and running tasks are included; the exact balance is checked before transfer.

COMPATIBLE PLATFORMS

Two optional settings here: list the proper nouns or brands in your video so the AI spells them correctly, and turn on speaker identification if several people speak. Nothing to change? Click “Next step”: we transcribe the speech, then you pick your subtitle style on a live preview.

Each shape matches a platform. AI reframes your video to the chosen format.

Pick your video's final shape, then its resolution. No black bars.

Choose your compression level

Set the start and end points for your clip.

Duration :

Choose the audio format for export.

Never any black bars: edges are blurred or cropped.

Target format

Exact size (pixels)

× px

Fit mode

Resolution

Drag the slider to set the playback speed.

0.25x1x2x4x

Set the start time and duration for your GIF.

Choose what replaces the background of your video or photo.

Uploading background…

Transparent export (ProRes .mov with alpha). Reserved for the Pass or a Pro plan; the preview shows on a checkerboard.

Drag · resize · rotate
Placement
Text
Logo / Image
Common settings

The language is detected automatically — nothing to select. Over 100 languages are recognised (Wolof is not supported yet).

optional

Helps the AI spell rare names or brands correctly.

Identify speakers

Detects who speaks when (ideal for interviews and podcasts)

Number of speakers

Next: the style workshop

20 animated styles (karaoke, MrBeast, neon…), custom fonts and colours — all on a live preview.

Choose how aggressively to cut. Balanced fits most videos.

Remove filler words

Removes "uh", "um", "ah"... for smoother speech

Clean audio

Isolates voice and removes background noise, music, echoes (longer processing)

Maximum clip length

Number of clips

Klipa still picks how many clips to make: this video is short, cutting it further would add nothing.

Output Format

Your clips are generated without captions to keep things fast. After generation, pick the clip you like and add styled captions to it with a live preview.

Keywords (optional)

Add specific words to improve transcription accuracy.

done

About 1–3 minutes. Face tracking keeps the subject in frame.

Keep this tab open, processing continues.

The style applies to THIS clip only. Your other clips stay available on the result page — you can caption them separately, now or later from your dashboard.
LIVE PREVIEW · BURNED-IN CAPTIONS

Klipa is preparing your preview

Your best clip is being cut and auto-reframed (face tracking). This preparation happens only once — about 30 seconds.

No speech detected in this preview clip — clips that do contain speech will still be captioned.
Captions update live
Font
Size
Position
Text
Highlight
Caption text
Unsaved changes
My templates
This style is Pro-only

Upgrade to generate your clips with this style, or continue free with the Minimal style.

Your reframed video is ready

Free download stays available — your video will carry the logo.

Unlock often? See Pro

Format Face trackingon

🖼️

Time removed Cuts

✓ Logo-free unlocked for this video

The free version carries the Klipa logo in the center and bottom of the video.

One-time payment, this video only.

Or Pro: all your videos logo-free, unlimited →
Download subtitles (SRT)

Your original video is still available. Try another tool:

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Based on 500+ user reviews

Convert WebM to MP4 — Share Browser Videos Everywhere

WebM is great for browsers, but useless almost everywhere else. Your phone, TV, social media accounts, and most video editors will not play WebM files. Converting to MP4 gives you a universally compatible video you can share, upload, or edit anywhere. Klipa handles the VP8/VP9-to-H.264 conversion on our servers, so it works even on older devices.

Got a screen recording to share? Convert it here, then compress the MP4 for email-friendly sizes. Need captions on your tutorial? Our AI subtitle generator transcribes and burns in captions automatically.

How to Convert WebM to MP4

Step 1

Upload Your WebM File

Drag and drop your WebM file — screen recordings, browser exports, or any WebM video up to 5 GB on Pro (500 MB without an account). We support both VP8 and VP9 encoded WebM files.

Step 2

H.264 MP4 Encoding

Our server converts the VP8/VP9 video stream to H.264 and the Opus/Vorbis audio to AAC, producing a universally compatible MP4 file. Quality settings are optimized to preserve visual fidelity at the smallest possible file size.

Step 3

Download Universal MP4

Your MP4 plays on every device and platform. Upload to YouTube, share on WhatsApp, import into video editors — it just works. Want to enhance it? Add AI subtitles or compress further for faster sharing.

Why Convert WebM to MP4?

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Share Everywhere

WebM only works in browsers. MP4 plays on phones, TVs, and all social platforms.

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Quality Preserved

Converts VP8/VP9 to H.264 with optimal quality settings.

Screen Recordings

Perfect for converting Chrome/Firefox screen recordings to shareable MP4.

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No Software Needed

Convert directly in your browser. No VLC or third-party software required.

FROM BROWSER TO EVERYWHERE

Screen Recording Sharing

Chrome and Firefox save screen recordings as WebM. Convert to MP4 so you can share tutorials, bug reports, and presentations with anyone — regardless of their device. Add AI subtitles to make screen recordings accessible.

YouTube and Social Uploads

While YouTube technically accepts WebM, MP4 uploads process faster and more reliably across all social platforms. Convert first, then compress to speed up the upload process.

Video Editing Import

Most video editors — Premiere Pro, DaVinci Resolve, iMovie — handle MP4 much better than WebM. Convert your source files before importing for smoother editing. Our converter handles other format needs as well.

WebM to MP4 — FAQ

WebM is Google's open video format used mainly by web browsers. It uses VP8/VP9 codecs and is not widely supported outside browsers.
Most devices, apps, and social platforms don't support WebM. MP4 is the universal standard that works everywhere.
Yes! Chrome and Firefox screen recordings are often saved as WebM. Our tool converts them to MP4 for easy sharing.
Minimal. We use high-quality H.264 encoding that preserves the visual fidelity of your WebM video.
The limit depends on your plan: 500 MB without an account, more with a free account, up to 5 GB on Pro.
The time depends on the file size, duration, source codec, and chosen format.
Chrome uses WebM as its native recording format because it is open-source and royalty-free. For sharing outside the browser, converting to MP4 with our tool ensures universal playback.
MP4 does not support transparency. If your WebM has an alpha channel, the transparent areas will be rendered as black in the MP4 output. For transparent video, keep the WebM format.
We use high-quality H.264 encoding settings that preserve the visual fidelity of your WebM. Any quality difference is imperceptible to the human eye. For the absolute smallest file, run the result through our compressor.

What Creators Say

Convert your WebM to MP4 now

Free, instant, no signup needed.

WebM to MP4 — Universal Compatibility

Stop being limited by WebM's browser-only playback. Klipa converts your WebM files to universally compatible MP4 quickly — free, online, with no signup required. Pair it with our compressor, AI subtitles, and video converter for all your video format needs.

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