Convert TS to MP4 Online — No Upload, No Watermark
TS (MPEG-TS) is the transport-stream container used by broadcasts and DVR recordings. Converting to MP4 gives you a file that plays on every phone, browser, and editor without re-encoding at playback time.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Where TS files come from
TS is MPEG transport stream, designed for broadcast where a receiver may tune in at any moment. It is what digital TV tuners, PVRs and IPTV recorders write, and what many HLS stream downloaders leave behind as segments.
What changes when you convert TS to MP4
| Container | Transport stream rewritten as MP4, replacing broadcast packets with a seekable index |
|---|---|
| Video | H.264 or MPEG-2 re-encoded to H.264 |
| Audio | AC-3 or AAC re-encoded to AAC |
Worth knowing first
A transport stream has no index, because a broadcast has no beginning. That is why scrubbing a TS file is slow or impossible and why editors often refuse them. The MP4 written here has a proper index, which is usually the real reason people convert rather than any codec problem.
FAQ
Why can I not scrub through a TS file?
Because it carries no index. Broadcast streams are built so a receiver can start decoding from anywhere, which means there is no table telling a player where a given timestamp lives. Players fall back to scanning. MP4 stores that index, so seeking becomes instant.
I have many .ts segments from one stream. Can I convert them together?
Not in one step here, since this converts a single file. Join them first with the Video Merger, which concatenates without re-encoding when the segments match, then convert the result.
My TS file has AC-3 audio that my phone will not play. Is that fixed?
Yes. AC-3 is a broadcast codec that phones and browsers generally do not decode. The audio is re-encoded to AAC, which plays everywhere.
Is this TS to MP4 converter really free and without upload?
Yes. The tool runs entirely in your browser using FFmpeg compiled to WebAssembly. Your TS file never leaves your device — open the DevTools Network tab to verify zero uploads. No signup and no watermark. The practical size limit is the memory your browser gives this tab, which is generous on a computer and a few hundred megabytes on a phone.