Add your TS file
Drop one or more .ts files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
TS to AC3
Pulling the soundtrack out of a .ts video into .ac3 audio keeps what you can hear and drops the picture entirely. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop TS files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting MPEG transport stream to Dolby Digital audio
Pulling the soundtrack out of a .ts video into .ac3 audio keeps what you can hear and drops the picture entirely. A .ts file is an MPEG transport stream, the packetized format built to carry television through unreliable channels like antennas, satellites, and cable. DVR recordings, IPTV captures, and HLS streaming segments all use .ts, making it one of the most common raw broadcast formats people encounter.
An .ac3 file holds a raw Dolby Digital bitstream, the surround-sound format of DVDs, digital television, and countless movie soundtracks. Files with the .ac3 extension usually appear after audio has been demuxed from a disc or video file for editing or conversion. For this route the practical draw is universally decoded by home-theater receivers, soundbars, and TVs and keeps 5.1 mixes exactly as the studio authored them — balanced against browsers mostly lack the decoder, so MP4s with AC-3 audio often play silent video on the web, which is worth knowing before you commit a large batch.
Why convert TS to AC3?
The usual reason to take .ac3 audio out of a .ts file is that only the sound matters — a talk, interview, song, or podcast segment. Keeping the video stream would waste storage, and a dedicated audio file is easier to trim, tag, and play. On the source side, packet overhead runs several percent above an equivalent MP4; on the target side, the payoff is universally decoded by home-theater receivers, soundbars, and TVs, which is exactly what you want for preserving the original surround track when remuxing DVDs into MKV.
TS vs AC3 at a glance
| Aspect | MPEG transport stream (.ts) | Dolby Digital audio (.ac3) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Lossy — discards detail it judges invisible to shrink files |
| How it stores data | fixed 188-byte packets with sync bytes and continuity counters allow receivers to detect and skip corrupted data | a perceptual MDCT transform codec carrying up to 5.1 channels |
| Strongest at | saving recordings from DVRs and set-top boxes | preserving the original surround track when remuxing DVDs into MKV |
| Weak spot | packet overhead runs several percent above an equivalent MP4 | browsers mostly lack the decoder, so MP4s with AC-3 audio often play silent video on the web |
| Metadata | broadcast service tables (SDT/EIT) can carry channel names and program-guide data, but there is no field for user tagging | no tagging layer exists; the bitstream carries technical metadata like dialnorm and downmix coefficients rather than titles or artists |
Pick AC3 as the output
Select .ac3 in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if AC3 is selectable, the route is real and validated.
Convert on your device
Press Convert. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid AC3 file. Outputs keep the original filename with the .ac3 extension.
TS to AC3 questions, answered
Will converting TS to AC3 lose quality?
Since ts is container-oriented and ac3 is lossy-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .ac3 itself requires.
Is it private to convert TS files here?
Yes — the .ts file is processed inside your browser tab and never uploaded. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded. Close the tab and the file is gone from memory.
Where will the AC3 file work?
Home-theater equipment decodes Dolby Digital as a matter of course, and Windows and macOS handle it in their native players, but browser support is nearly nonexistent. Transcoding the track to AAC is the standard remedy when web playback matters.
Will the AC3 file be bigger or smaller than my TS?
Much smaller — the video stream is usually 80–95% of a .ts file's weight, and it is discarded entirely. The remaining audio is re-encoded at the bitrate implied by your quality setting.
What happens to the metadata in my TS file?
This converter strips container metadata deliberately (the FFmpeg command runs with metadata mapping disabled) so exported files do not leak recording details. In the source, broadcast service tables (SDT/EIT) can carry channel names and program-guide data, but there is no field for user tagging; none of it is transmitted anywhere because the file never leaves your browser.