Video
What is a TS file?
Updated Jul 2026
A TS file (MPEG Transport Stream) is a video container built for broadcast and streaming, where video, audio, and other data get split into small packets that can survive being transmitted live. It doesn't re-compress the video inside it, it just packages the existing stream, but that makes files large and many editing programs won't open it directly.
- Extension
- .ts
- Type
- Video
- Typically
- Broadcast, streaming
Why TS exists
The Transport Stream format comes from the MPEG-2 broadcast standard, originally designed for digital TV and satellite signals. Its whole job is to keep video playable even when the connection drops packets or glitches mid-stream, which is why it's still the backbone of live TV, IPTV, and many streaming pipelines today.
Instead of storing a video as one continuous file the way an MP4 does, a TS file breaks everything into fixed-size packets, each tagged so a player can find the right video, audio, or subtitle stream and keep playing even if a few packets go missing. That resilience is great for broadcast, but it adds overhead a regular file doesn't need.
Most people run into a TS file after recording from a set-top box, a DVR, a security camera, or a screen-capture tool that saves in this format by default. Because a lot of editing software and some phones and TVs expect MP4 instead, the usual next step is converting it before you can edit, share, or play it smoothly.
The trade-offs
Strengths
- Keeps playing even if part of the stream is damaged or dropped
- Packages the existing video without adding another round of compression
- Widely used and well supported by broadcast and streaming hardware
Watch-outs
- Files are large since nothing gets recompressed
- Many editing tools and some devices don't open it directly
- Packet-based structure adds overhead a simple file doesn't need
A note on privacy
A TS file doesn't usually carry personal metadata the way a photo does, but a recording can still show exactly what was captured, when, and from where, whether it's a DVR clip or security footage. Uploading that footage to an online converter means it sits on someone else's server while it processes. Converting it on your own computer keeps the recording, and whatever it shows, on your machine the whole time.
Questions
How do I open a TS file?
Many media players handle TS files directly, but some phones, TVs, and most editing software expect MP4. Converting to MP4 first is the simplest way to make sure it plays and edits without issues.
Is TS better than MP4?
For resilience during live transmission, TS has the edge. For everyday playback, editing, and smaller file sizes, MP4 is the more practical choice.
Why did my recording save as a TS file?
Set-top boxes, DVRs, and some security cameras and screen recorders default to TS because it's built to keep working through a live, sometimes unstable stream. It's rarely a setting you chose on purpose.
Can I convert a TS file without uploading it?
Yes. A desktop app like Morphjet converts TS on your own computer, so the recording never has to leave your machine to become an MP4.
Morphjet opens and converts TS and 1,800+ other formats, all on your own computer. Launching this July.