Step 1: Transfer your MP4 files using the button above or by slide and deposit.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Retrieve your converted DTS files.
MP4 to DTS Conversion FAQ
How do I extract the audio from my MP4 file as DTS?
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Upload the MP4 file and the converter demuxes the audio stream, then transcodes it to DTS. There is no second video pass — the visual track is discarded immediately so extraction is much faster than a full re-encode. MP4 is ISO/IEC 14496-14, standardised in 2001 and derived from the same QuickTime box layout MOV uses. DTS is Digital Theater Systems audio, the cinema-derived rival to Dolby Digital that appeared on laserdisc and DVD from 1993.
Is converting MP4 to DTS a second round of lossy compression?
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Yes, and it is worth planning around. Both formats are lossy, so the DTS encoder is working from audio that has already been through one psychoacoustic pass, and its own decisions compound the first set. At 192 kbps or above the result is still transparent for most listening. If you have a lossless master anywhere, encoding the DTS from that instead avoids the double pass entirely. Almost every MP4 in the wild is H.264 video with AAC audio; the container also legally holds HEVC, AV1 and VP9. DTS is lossy multichannel audio at a much higher bitrate than AC-3 — typically 768 to 1509 kbps for 5.1.
Will the DTS play in my car or on older hardware?
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Often not. MP4 is decoded by essentially everything, including car head units and elderly players; DTS needs software that knows the codec, which standalone hardware frequently does not have. If the destination is a car stereo or a portable player, that is a strong argument for staying on MP4. DTS licensing means most TVs, soundbars and every browser refuse it, so it usually has to become AAC or AC-3 to be usable.
What audio bitrate does the extracted DTS use?
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Default bitrate for lossy DTS is 192 kbps, which is transparent for music. You can override to 320 kbps (audiophile) or 96-128 kbps (voice / podcast / smaller file). The bitrate dropdown is exposed in the advanced options before you click convert.
Will I lose audio quality going from MP4 to DTS?
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If DTS is lossless (WAV, FLAC), every sample is preserved exactly. If DTS is lossy (MP3, AAC, OGG, Opus), the DTS codec recompresses the source audio — at 192 kbps the result is transparent for almost all content. Going lossy → lossless never recovers detail already discarded.
Does the DTS audio keep the original sample rate?
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By default yes — 48 kHz audio in your MP4 stays 48 kHz in the DTS output. For CD-burning or legacy player compatibility you can downsample to 44.1 kHz via the sample-rate dropdown; the resampler is high-quality SoX-grade.
Can I extract audio from multiple MP4 files to DTS in one batch?
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Yes — drop a folder of MP4 files and we extract audio in parallel. Premium users get more parallel workers; on a 50-file batch this is the difference between a couple of minutes and ten-plus minutes.
Will the DTS be tagged with title / artist / album metadata?
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If the MP4 carries chapter or stream metadata, we copy title / artist / album fields into the DTS container. If not, the DTS comes out untagged — use a tag editor (Mp3tag, Picard) post-export for richer tagging.
How long does extracting DTS audio from a 1-hour MP4 take?
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Audio demux + encode is fast — typically 5 to 15% of the source duration. A 1-hour MP4 → DTS finishes in roughly 3 to 9 minutes on the standard pipeline; Premium parallelism cuts this further for batch jobs.
Can I extract just a section of the MP4 audio as DTS?
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Not in this tool directly — extract the full audio as DTS, then use /audio-trim/ or /audio-cutter/ to clip the section. The two-step path is usually faster than a combined operation and gives you precise waveform-level control.
Is my MP4 file private during the audio extraction?
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Yes — same privacy model as every conversion: isolated workers, no human review, automatic deletion within minutes of completion. The detailed retention window is on /privacy/.
Why does the DTS file have silent gaps where the MP4 had sound?
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Almost always a wrong-stream selection: MP4 had multiple audio tracks and the demuxer picked an empty or auxiliary stream. Use the advanced "audio stream" picker to select stream 0, 1, 2 explicitly, or target a DTS container that supports multi-track output (FLAC, OGG).
DTS (Digital Theater Systems) is a series of multichannel audio technologies known for high-quality audio playback. It is often used in surround sound systems.
