Step 1: Supply your MKV 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 AV1 files.
MKV to AV1 Conversion FAQ
What does the MKV to AV1 converter do?
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It transcodes a MKV video into the AV1 container. Resolution, frame rate, and aspect ratio are preserved by default — useful when you need a different format for a target player without quality loss.
Will resolution and frame rate be preserved in the AV1?
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Yes. MKV → AV1 keeps resolution, frame rate, and aspect ratio unchanged by default. To change them, use the Resize or Speed tool on the result.
Is the MKV to AV1 conversion reversible?
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You can convert the AV1 back to MKV on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
Will the converted AV1 be a different size than the MKV?
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Modern codecs compress better, so AV1 from a legacy MKV is typically 30-60% smaller at equivalent quality. Conversions in the opposite direction can grow the file.
Is AV1 worth targeting for a video on a web page?
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For a page you control, yes. AV1 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. AV1 delivers roughly 30% better compression than H.264 at the same quality and carries no licence fees, which is why YouTube and Netflix push it.
My MKV files came from ripping discs — will they convert cleanly?
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Cleanly, yes, but check what is inside first. A rip usually carries more than the picture — often several audio languages, sometimes a subtitle track or chapter marks — and whether those survive depends entirely on what the AV1 can hold, not on the rip. The other thing to know is that the encode already happened: the ripper chose a bitrate years ago and no conversion can recover detail it discarded, so if the discs are still around, re-ripping beats re-encoding. MKV is Matroska, an open container designed in 2002 with no licensing restrictions and no ceiling on what it can hold.
Will the AV1 play in a browser when the MKV would not?
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Yes, and that is usually the whole reason for the conversion. An MKV embedded in a web page either shows a broken player or forces a download, because browsers ship no decoder for it. AV1 plays inline through the native HTML5 video element with no plugin and no external application.
Is AV1 a container or a codec, and does that change what I get back?
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It changes what to expect from the output file. One side of this conversion names an encoding rather than a wrapper, so what comes back is that bitstream inside whichever container suits it best — normally MP4 or MKV. The extension reflects the container; the codec is what actually determined the file size and where it will play. MKV is codec-agnostic: H.264, HEVC, VP9 and AV1 video sit happily beside AAC, FLAC, Opus, DTS or Dolby audio in the same file. AV1 is a codec, not a container — the bitstream normally travels inside MP4 or WebM, paired with Opus or AAC audio.
Is there a file-size limit when converting MKV to AV1?
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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 MKV files to AV1 at once?
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Yes. Drop or pick multiple MKV files in one upload — the converter processes them in parallel and returns a ZIP of the AV1 results. There is no need to repeat the upload step per file.
What happens to my MKV files after the conversion?
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Uploaded files and AV1 outputs are auto-deleted after a short retention window. We do not inspect, share, or train on user files. Direct download links are time-limited and tied to your session.
Will my AV1 play on phones, tablets, and TVs?
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Yes — AV1 uses modern codecs that play natively on iOS, Android, Smart TVs, game consoles, and every modern browser.
