Audio
What is a DTS file?
Updated Jul 2026
DTS (DTS surround audio) is a compressed multi-channel sound format built for movies and home theater systems, found on DVDs, Blu-rays, and AV receivers. It's a lossy format, so some audio detail is discarded to keep the file size manageable. It plays fine on gear built to decode it, but many phones, laptops, and editing programs can't handle it without converting first.
- Extension
- .dts
- Type
- Audio
- Typically
- Home theater, film
- Compression
- Lossy
Why DTS exists
DTS Inc. introduced the format in 1993 as a competing surround sound system to Dolby Digital, first used in cinemas and later licensed for home DVD and Blu-ray releases. It became one of the two standard audio tracks studios ship alongside a film, the other being Dolby's own format.
In plain terms, DTS takes the separate channels of a surround mix, front left, front right, center, rear channels, and a subwoofer channel, and compresses them together into one bitstream. A receiver or TV with a DTS decoder chip reads that bitstream and sends each channel to the right speaker. Without that decoder, the file just won't play back correctly, or at all.
Most people run into a DTS file after ripping a DVD or Blu-ray, or pulling the audio track out of a video project. It plays fine through a home theater setup, but drop it into a phone, a laptop's default media player, or most video editors and it gets rejected or plays as silence, since consumer software rarely bothers to license DTS decoding.
The trade-offs
Strengths
- Delivers full surround sound for movies and home theater setups
- Widely supported by AV receivers, soundbars, and Blu-ray players
- Packs multi-channel audio into a smaller file than uncompressed sound
Watch-outs
- Lossy, so some audio detail is discarded during compression
- Not supported by most phones, laptops, or default media players
- Licensing costs mean fewer everyday apps can decode or edit it
- Usually needs converting to a common format before it plays outside a theater setup
A note on privacy
A standalone DTS file rarely carries personal metadata the way a photo does, but it's often pulled from a home video project, a personal disc rip, or a film archive you'd rather not hand to a stranger's server. Uploading it to an online converter means that file sits on someone else's machine, even briefly. Converting it on your own computer keeps the audio, and whatever project it came from, on your machine the whole time.
Questions
How do I open a DTS file?
You need a receiver, soundbar, or player with a built-in DTS decoder. On a regular computer or phone, the easier route is converting it to a common format like AAC or WAV first.
Is DTS better than Dolby Digital?
They're roughly comparable. DTS discs sometimes use a higher bitrate than their Dolby Digital counterpart, but in practice the difference is small, and compatibility matters more than which one sounds marginally better.
Why does my Blu-ray rip save as DTS?
Because that's the audio track the studio put on the original disc. Ripping the disc preserves that track as is, rather than re-encoding it into something else.
Can I convert DTS without uploading it?
Yes. A desktop app like Morphjet converts DTS audio on your own computer, so the file never has to leave your machine or pass through someone else's server.
Morphjet opens and converts DTS and 1,800+ other formats, all on your own computer. Launching this July.