Do I need a codec pack or HEVC extension to use this web player?

No codec pack or HEVC extension is required to use the web player. It checks your browser's built-in playback support and can convert unsupported local files to MP4 in the browser.

Are my videos uploaded?

Local files stay on your device. Playback checks and MP4 conversion run in your browser.

Can I convert HEVC to MP4?

Yes. Choose a local HEVC video and use Convert to MP4 to create a more compatible H.264 MP4 file.

Can I test video playback without installing codecs?

Yes. The web player tests supported video files directly in your browser without installing codecs. If playback fails, you can convert the file to MP4.

Can I open MKV, MOV and WebM files in the browser?

Yes. Choose a local MKV, MOV, WebM, MP4 or HEVC/H.265 file and the web player will try browser playback first. Browser support can vary by format and device.

Does this replace installing HEVC or Dolby extensions?

For many users, yes. The page lets you try playback in the browser first, without installing HEVC or Dolby extensions. If the browser cannot play the video, local MP4 conversion can help.

Web Player - Play HEVC/H.265, MKV, MP4, MOV and WebM Videos

Web Player

Open HEVC/H.265 MKV, MP4, MOV and WebM video files in your browser.

✓ No HEVC or Dolby extension required • Local files stay on your device • Optional MP4 conversion

✓ Play supported videos directly in the browser

✓ Convert unsupported files to a compatible MP4 when needed

✓ Use the Inspector when you need deeper file details

Open a video

Drag a video file into the drop area or browse for one. Your file stays on your device and is not uploaded.

Drop video file here or click to browse your computer Supports MP4, MOV, M4V, MKV, WebM, TS, HEVC / H.265, and more.

Player

No video selected

Select a file or paste a URL to start playback.

Display mode Playback speed Subtitles

Media inspector

Name—

Size—

Type—

Likely container—

Likely codec—

Codec tag—

Resolution—

MP4 brands—

Notes—

Playback check

Checks whether common H.264, HEVC / H.265, AV1, VP9, and WebM videos should play in this browser. No codec pack is required for the browser test.

Checking playback...

Your browser will run this check automatically when JavaScript is available.

Quick playback check

Run a short built-in check to see whether this browser can play common HD and HEVC videos.

No quick check run yet.

Fallback conversion

Convert a local video to a more compatible H.264 MP4 file. The work runs in your browser; large or 4K files can take a while.

Resolution Quality

Choose a local video, then convert it to MP4 if playback fails.

Open videos without installing extra extensions

This web player lets you open HEVC/H.265, MKV, MP4, MOV and WebM video files directly in your browser. It is useful when you do not have, or cannot install, HEVC, Dolby or other video extensions.

No upload is required. The page uses your browser's existing video playback support and runs local file conversion on your device instead of uploading your video to a server.

Web Player FAQ

Do I need to install an HEVC or Dolby extension?

No. Try the web player first. It uses browser playback where available and offers MP4 conversion when a file is not supported.

Can it test HEVC / H.265 videos?

Yes. HEVC, also known as H.265, is one of the formats checked by the player. Browser support can vary by device, browser, and operating system.

Will my video be uploaded?

No. Local video playback and conversion run in your browser, so selected files stay on your device.

Can I test a video without installing codecs?

Yes. Select a local file and the page will try browser playback first. If playback fails, use Convert to MP4.

When should I convert to MP4?

Use Convert to MP4 if the video does not play, stutters, or needs to work in more apps and devices.