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Free browser player

Surround Player

Test and play offline audio or video files without uploading them or installing a video player.

Audio Channel Tester Stereo → 5.1 Converter
Upmixify Surround Player browser preview
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Choose your media

Your selected files stay on this device.

For offline files: no upload and no media-player installation. You can also add a direct HTTP/HTTPS stream URL.

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Choose an audio or video file Local playback — no upload required
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Upmixify surround apps

Try these surround-ready Android apps

These Upmixify apps also support surround audio workflows. Tap any logo to open its app page, features and download options.

Upmixify 5.1+ Surround Audio Player logo Audio Player Upmixify 5.1+ Surround Audio Player Upmixify 5.1+ Surround Video Player logo Video Player Upmixify 5.1+ Surround Video Player Upmixify 5.1+ Surround Audio Converter logo Audio Converter Upmixify 5.1+ Surround Audio Converter Upmixify 5.1+ Surround Audio Recorder logo Audio Recorder Upmixify 5.1+ Surround Audio Recorder Upmixify Text to Dialogue logo Text to Dialogue Mono, Stereo and 5.1 voice audio
Common questions

Browser audio & video player FAQs

Quick answers about online playback, stream URLs, surround channels, format support and browser limitations.

How can I play an online audio or video stream?

Open Browser Surround Player, click Add Stream, paste a direct HTTP or HTTPS media URL, then choose Add & Play. The stream must use a format and codec your browser can decode.

Which online player can play local audio and video files without uploading them?

Upmixify Browser Surround Player can play supported local audio and video files directly in your browser. You can choose one file or a whole folder, and the files stay on your device.

Is there an online media player that supports all audio and video formats?

No browser player can reliably support every format. Playback depends on codecs built into the browser and operating system. MP3, WAV, AAC, M4A, MP4 and WebM are usually the safest choices. FLAC, MKV and other multichannel or high-bitrate formats may vary by browser and device.

How do I check how many audio channels a file has?

Use the Upmixify Audio Channel Tester. Load the file and the tool can show the detected channel layout, speaker map and live channel meters for supported audio.

How can I test 5.1 or 7.1 surround sound online?

Open the Audio Channel Tester and use a supported multichannel file or the quick test tones. The tool provides stereo, 5.1 and 7.1 speaker visualization and live channel activity.

Can a browser output real 5.1, 7.1 or 9.1 audio?

Sometimes, but it is not guaranteed. Real multichannel output depends on the browser, operating system, HDMI or audio interface, driver settings and the connected speaker system. When enough physical channels are not available, the player can use headphone spatial stereo instead.

Can I convert stereo audio to 5.1 online?

Yes. Upmixify includes a Stereo to 5.1 Converter that can upmix stereo audio and export a real six-channel 16-bit PCM WAV file in supported browsers.

Can I play an entire music or video folder in the browser?

Yes. Use Choose Folder to build a local playlist from supported audio and video files. Folder selection works best in Chromium-based browsers such as Chrome and Edge.

Why does an online stream play but surround processing does not work?

Remote media can require CORS permission before Web Audio can process it. A stream may play normally in the video or audio element but still block 5.1, 7.1 or 9.1 DSP if the remote server does not allow cross-origin access.

Does Upmixify upload my local audio or video files?

No. Local file and folder playback is handled in the browser. The selected local files are not uploaded to Upmixify for normal playback.

Can I change video aspect ratio, crop, zoom and picture settings?

Yes. Open the Settings icon in the player. Video controls include Auto, 16:9, 4:3, 21:9 and 1:1 aspect ratios, Fit, Crop or Fill, Stretch, Zoom, Brightness, Contrast, Saturation and a browser-safe Sharpness approximation.

Can I adjust bass, treble and surround channels while playing audio or video?

Yes. In Player Settings, the Audio tab includes output mode, Center level, Bass or LFE, Surround level, Treble, Spatial Width and Headphone Spatial fallback.

Check audio channels Convert stereo to 5.1