About TS Files
MPEG Transport Stream
TS (Transport Stream) is used for broadcasting, streaming, and recording live TV.
Family
Video Files
Extension
.ts
MIME Type
video/mp2t
Can Use As
HOW TS
CAME TO BE.
TS — MPEG Transport Stream — was ratified in 1995 as part of the MPEG-2 systems standard (ISO/IEC 13818-1). Where MPEG Program Streams were designed for reliable storage media like DVDs, Transport Streams were designed for error-prone broadcast channels: 188-byte packets, continuous sync markers, and built-in error correction. Every satellite, cable, terrestrial, and IPTV digital broadcast on Earth uses Transport Streams as its delivery container.
Standalone .ts files appear in two contexts today: (1) PVR recordings from set-top boxes like TiVo, Dreambox, and most smart TVs, and (2) HLS streaming — Apple’s HTTP Live Streaming segments each video chunk as a small .ts file delivered over HTTPS. YouTube, Twitch, Netflix, and most live-video CDNs use HLS-over-TS internally, meaning TS packets carry more video traffic worldwide in 2026 than any other container.
CURIOSITIES &
TRIVIA.
Every TS packet is exactly 188 bytes — a number chosen in 1995 to evenly divide satellite downlink frames and accommodate error-correction overhead.
Apple HLS streaming segments each chunk as a .ts file — YouTube, Twitch, and most live streaming use TS under the hood.
All digital TV broadcasts on Earth (DVB, ATSC, ISDB) deliver content as MPEG Transport Streams over the air.
TiVo, Dreambox, and most modern DVR / smart TV recordings save to .ts files natively.
The successor format fMP4 (fragmented MP4) is gradually replacing TS for HLS because it enables lower latency — but TS still dominates.
STRENGTHS &
LIMITATIONS.
Strengths
- Designed for noisy channels — packet-level error correction.
- Multi-program: one TS can carry several TV channels.
- Native format for all digital TV broadcasts and HLS streaming.
- Streaming-first: no need to download whole file to start playing.
- 30+ years of stable, deployed infrastructure.
Limitations
- Packet overhead (~3% vs Program Stream).
- Seek index is implicit — requires scanning for random access.
- Multiple audio/subtitle selection requires parsing PMT (Program Map Tables).
- fMP4 is gradually replacing TS for modern low-latency streaming.
Typical Sizes & Weights
HLS video segment (6 seconds, 1080p)
2-5 MB
1 hour recorded TV (HD)
4-8 GB
Satellite transponder capture (1 min)
~300 MB
Technical Specifications
- MIME type
- video/mp2t
- Extensions
- .ts, .m2ts, .mts
- Standard
- ISO/IEC 13818-1 (MPEG-2 Systems)
- Packet size
- 188 bytes (standard); 192 bytes (M2TS/Blu-ray)
- Primary use
- Broadcast TV + HLS streaming
CONVERT FROM
TS
Common Use Cases
Broadcast TV, streaming, DVR
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Frequently Asked Questions about TS
Frequently Asked Questions
TS (MPEG Transport Stream) is a video container format that bundles one or more video streams, audio tracks, and optional subtitles into a single file. The container format determines how metadata is organised and which codecs can live inside; the visual quality itself depends on the codec (H.264, H.265, VP9, AV1) rather than the TS wrapper. It is part of the video files family.
VLC, MPV and PotPlayer play nearly every TS file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche TS variants may fail. If a device refuses your TS, convert to MP4 with our TS to MP4 converter for universal playback.
Upload your TS to KaijuConverter and pick MP4, MOV, MKV, WebM, or any other target. Our pipeline uses FFmpeg under the hood and stream-copies when codecs are compatible (no quality loss) or transcodes at high-quality defaults otherwise. Conversion runs server-side; both files delete within two hours.
Only when the target requires re-encoding. If the codecs inside TS match what the target container supports, FFmpeg stream-copies the streams and the output is bit-identical to the source. Transcoding uses transparent quality defaults (CRF 20–23 H.264) and produces output indistinguishable from the original at normal viewing distance.