Step 1: Supply your MP4 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 HLS files.
MP4 to HLS Conversion FAQ
What does the MP4 to HLS converter do?
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It converts a MP4 file into HLS format.
Will the data inside my MP4 be preserved when converting to HLS?
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Yes — the content is mapped to the HLS equivalent. Format-specific extras that HLS does not represent natively are omitted rather than corrupted.
Is the MP4 to HLS conversion reversible?
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You can convert the HLS back to MP4 on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
What output quality should I expect from MP4 to HLS?
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Default settings target broadcast / web quality — visually identical to the source for most viewers. For archival use, pick the highest quality option in the converter settings.
Can the HLS hold more than one audio track?
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Yes, and it is a real upgrade over MP4. HLS treats every audio stream as a first-class track, so an original-language mix, a dub and a director commentary can live in one file with the player switching between them on demand. HLS adapts to the viewer’s bandwidth in real time and is the only streaming format Safari and iOS support natively.
Is HLS 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. Almost every MP4 in the wild is H.264 video with AAC audio; the container also legally holds HEVC, AV1 and VP9. An HLS stream is an .m3u8 manifest pointing at a ladder of H.264 or HEVC segments at several bitrates, so the player can switch quality mid-playback.
Is there a file-size limit when converting MP4 to HLS?
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Free conversions have a size limit per file, set by the type of file, and the page tells you when a file is over it. A paid plan removes that limit, so much larger files can be converted.
Can I batch-convert several MP4 files to HLS at once?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
What happens to my MP4 files after the conversion?
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Uploaded files are processed on our own conversion servers, nobody looks at them, and they are not shared. The upload and the converted file are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Where can I open my HLS file?
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HLS opens in the standard tools for its category. Browsers and built-in OS viewers handle the common cases.
Do I need to install software to convert MP4 to HLS?
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No. The converter runs entirely in your browser plus our cloud — no plugin, no install, no admin rights. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.
Do I need an account to convert MP4 to HLS?
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Yes. One conversion an hour is free, with no account needed, for a file within the free size limit. A paid plan removes the hourly limit and the size limit, and lets you add several files to one job.
