Convert MKV to MP4 Online Free

Convert Matroska (.mkv) video to MP4 online free. Fast browser-based conversion, secure processing, and no software install.

Of sleep lêers hierheen. Maksimum lêergrootte: 1 GB.

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MKV video

MKV is a flexible Matroska video container often used for HD movies, subtitle tracks, multiple audio streams, and media library files. It is powerful, but some phones, browsers, TVs, editors, and upload tools expect MP4 instead.

Uitset formaat

MP4 video

MP4 is the most widely supported video container for iPhone, Android, Windows, macOS, smart TVs, browsers, video editors, messaging apps, and social media uploads.

How to convert MKV to MP4 online

Use this MKV to MP4 converter online free when a Matroska (.mkv) file will not upload, import, or play in the app you need. The converter creates an MP4 output that is easier to share across phones, browsers, TVs, editors, and social platforms.

You can upload files up to 1 GB, convert without creating an account, and adjust settings such as codec, quality, bitrate, resolution, and audio options before starting.

  1. 1 Upload your MKV video file.
  2. 2 Choose MP4 as the output format if it is not already selected.
  3. 3 Open settings if you need to adjust codec, quality, bitrate, resolution, or audio options.
  4. 4 Click Convert to start the MKV to MP4 conversion.
  5. 5 Download the converted MP4 file when processing is complete.

For many MKV uploads, Convertr can preserve the source quality when the video and audio streams are already compatible with MP4. If the source uses codecs that MP4 players do not support, choose compatible MP4 settings for broader playback.

Best MKV to MP4 settings for compatibility and quality

These settings summarize the practical advice from our MKV guides directly on the converter page, so you can choose the right MP4 output before starting.

Use H.264 video and AAC audio for broad playback

H.264 video with AAC audio is the safest MP4 combination for phones, browsers, TVs, editors, social platforms, and older playback devices.

Keep the original resolution and frame rate when quality matters

Match the source dimensions and frame rate unless you intentionally need a smaller file. This helps avoid blur, judder, and unnecessary detail loss.

Raise bitrate or quality for HD and 4K MKV files

If the first MP4 looks soft or blocky, use a higher quality or bitrate setting. Higher-quality settings keep more detail, especially in fast motion and high-resolution video.

Use HEVC only when your playback devices support it

H.265 or HEVC can reduce file size at similar quality, but H.264 remains the more universal MP4 choice for maximum compatibility.

MKV to MP4 FAQ

Is this MKV to MP4 converter online free?

Yes. Convertr lets you convert MKV to MP4 online for free with no registration, no software install, and no watermark.

Why convert MKV to MP4?

MKV is the common file extension for Matroska video. Matroska can store multiple tracks and subtitles, but MP4 is accepted by more phones, browsers, TVs, editors, and social platforms. Converting MKV to MP4 makes the video easier to play, upload, and share.

Will converting MKV to MP4 reduce quality?

Quality depends on the source codecs and selected settings. If the streams are MP4-compatible, the conversion can preserve quality by changing the container. If re-encoding is needed, use higher quality settings to preserve detail.

Can I convert large MKV files to MP4?

Yes. You can upload MKV videos up to 1 GB per file, which covers many recordings, exports, and downloaded video files.

Are my uploaded MKV files secure?

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Related video converters

Need another MP4 workflow? Try these common video conversion pages.

Video-omskakelaar MP4 Converter MKV Omskep Konverter MKV in AVI (voor die verf op 'n ou toestel) MKV na MOV-omskakelaar WEBM vir MP4 TS to MP4 MOV to MP4 Vervolgens word die MP4 M4V to MP4 Konverter van MP4 na MKV Die matras MKV Track Extractor MKV Subtitle Extractor MKV Oudio Onttrekker MP4 vir die webm Repair MP4 video HEVC na MP4 AV1 / AV01 tot MP4

Wat gebeur wanneer MKV na MP4 omgeskakel word

Bronformaat

MKV is a flexible Matroska container that can carry multiple audio, video, and subtitle tracks.

Teikenformaat

MP4 is a widely supported media container, commonly carrying H.264 or H.265 video and AAC audio.

Wat verander

The MKV container is read and the selected video and audio streams are written into a MP4 container.

Codecs may be transcoded even when the visible resolution and duration stay the same.

Wat behoue bly
Duration, frame order, and visible dimensions are preserved unless you select trimming, frame-rate, or resolution changes.
Wat verlore kan gaan
Extra subtitle, attachment, chapter, or alternate audio tracks may be omitted when the target container or selected settings do not support them.
Gevolge vir kodek en kwaliteit
Container names do not guarantee a codec. Quality and compatibility depend on the selected video codec, audio codec, bitrate, frame rate, and resolution.
Praktiese beperkings
A valid MKV extension does not guarantee that every codec inside the container is decodable. Corrupt, encrypted, or unusual streams can fail.

Omskakelingstappe

  1. Laai 'n MKV-lêer op wat nie groter as 1 GB is nie.
  2. Bevestig dat MP4 as die teiken gekies is.
  3. Open settings only if you need to change codec, quality, bitrate, frame rate, resolution, or audio behavior.
  4. Begin die omskakeling. 'n Gesonde, versoenbare werker begin dit onmiddellik verwerk.
  5. Laai die MP4-lêer af en kontroleer die resultaat voordat jy die bronlêer uitvee.

Probleemoplossing

Die MKV-lêer word afgekeur of wil nie oopmaak nie.
Bevestig dat die lêer nie leeg, wagwoordbeskermd of beskadig is nie, en dat die werklike formaat met die lêeruitbreiding ooreenstem.
Die MP4-lêer is groter as wat verwag is.
Kies, wanneer beskikbaar, 'n doeltreffender kodek of 'n laer kwaliteitinstelling as jy 'n kleiner lêer benodig. Verlieslose en ongekomprimeerde teikenformate is gewoonlik groter.
The result has no sound or will not play.
Try a broadly supported target codec and verify that the source contains a decodable audio stream.

Privaatheid en lêerbewaring

Opgelaaide en omgeskakelde lêers word outomaties verwerk en binne 24 uur onherroeplik uitgevee. Jy kan dit vroeër met die uitveebeheer verwyder. Convertr lees, ontgin, verkoop of beoordeel nie lêerinhoud handmatig nie.

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Nuttige alternatiewe

MKV na AAC Gebruik dit wanneer AAC beter by die toepassing, kodek of redigeerwerkvloei pas wat jy benodig. MKV na AIFF Gebruik dit wanneer AIFF beter by die toepassing, kodek of redigeerwerkvloei pas wat jy benodig. MP4 na MKV Use the reverse conversion when you need to return to the original format family.