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Play a DSS video online, free

Play and convert .DSS files online. Watch video, inspect tracks and convert to MP4, WEBM or MP3, free.

Drop your .DSS file here

Opens your .DSS file right here.

Choose file
Inspect up to 4 GB · convert up to ~500 MB
Instant. Opens in seconds
Real FFmpeg compiled to WebAssembly
100% free. No watermarks
Engines load only when needed: MediaInfo (2.4 MB) to inspect, FFmpeg (32 MB, cached after first use) to convert.

How to convert a .DSS file online

Three steps, all tab.

01

Open your file

Drop your .DSS file and every video, audio and subtitle track inside is listed with its codec, resolution, frame rate and language.

02

Preview

See frames from across your .DSS file before you convert, even when your browser can't play the codec inside.

03

Convert

Pick MP4, WEBM or MP3, or repack to MKV without re-encoding. Play the result right here, then download it.

What is a .DSS file?

Everything worth knowing about Digital Speech Standard Audio File.

A DSS file is a compressed voice recording in the Digital Speech Standard format, used for medical, legal, and business dictation. Open it with Express Scribe (free, Windows and Mac) or DSS Player Standard from OM System (formerly Olympus). VLC does not support DSS natively. To convert to MP3, use DSS Player Standard or NCH Switch Sound File Converter.

Programs that open .DSS files

Windows
DSS Player Standard (OM System / Olympus), Express Scribe
macOS
DSS Player Lite (OM System), Express Scribe
.DSS format details
Full nameDigital Speech Standard Audio File
DeveloperInternational Voice Association (IVA) — consortium of Olympus, Philips, and Grundig Business Systems; format originated at Grundig/University of Nuremberg (1994)
First released1994 (Grundig / University of Nuremberg)
CategoryAudio & Video
MIME typeaudio/x-dss
Signature02 64 73 73

Related viewers

Other free tools to open and preview your files.

Is my .DSS file uploaded to a server?

No. Your .DSS file is converted for you. The converted file is created in memory,.

Why is conversion slower than desktop software?

Browsers give web pages a single CPU core for this kind of work and no hardware video encoder. Short clips convert in seconds; for long 4K films a desktop app like HandBrake is faster. Use Start and Length to convert just the part you need.

Which output format should I pick?

MP4 plays on every phone, TV and browser. WEBM is an open format that's great for the web. MP3 keeps only the sound. MKV (no re-encode) is instant and lossless, but only changes the container.

Can I keep all audio tracks and subtitles?

The MKV (no re-encode) option copies every track as-is. MP4 and WEBM keep the first video and audio track, which is what most players use.

Why can't some files be converted?

Files protected with DRM (for example purchased iTunes .m4p songs or some .wmv rentals) are encrypted. We can show what's inside, but nobody can convert them without the key.

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