TS to MTS Converter

How to Convert TS to MTS Online

1. Upload Your TS File: Drag and drop or click "Add Files" to add one or more .ts transport-stream files. Batch conversion is supported, so you can queue several recordings at once.
2. Pick Video Codec and Quality Preset: The default codec is H.264 (the only video codec the AVCHD spec accepts for MTS). Choose a Preset from Highest down to Lowest, or switch to Constant Bitrate / Variable Bitrate to target a specific bitrate, or use Constant Quality / Constraint Quality (CRF 16-51) for visually-lossless results around CRF 18-23.
3. Resolution and Trim (Optional): Keep Original to passthrough the source resolution, pick a Preset Resolution (1080p, 720p, 480p, 4K up to 3840x2160), scale by percentage, or set custom Width x Height. Use Time Range under Trim to cut to a specific start time and duration.
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Why Convert TS to MTS?

TS (MPEG Transport Stream, specified in ISO/IEC 13818-1 / ITU-T H.222.0 with 188-byte packets) is the general-purpose container used for DVB, ATSC, IPTV and PVR recordings. MTS is the consumer-facing extension for AVCHD — the camcorder format Sony and Panasonic jointly announced on May 11, 2006, which wraps H.264 video and Dolby AC-3 audio into a constrained transport stream designed for HD camcorders. Converting from generic TS to MTS gives you a file your camcorder software, Blu-ray authoring tool, or older non-linear editor can recognize as native AVCHD footage.

• Import broadcast captures into AVCHD editors — Sony Vegas, PMB/PlayMemories Home, and some older Panasonic HD Writer builds will only auto-detect AVCHD clips when they carry the .mts extension. Renaming alone is not always enough if the timestamps and stream structure differ.
• Feed PVR recordings into camcorder workflows — DVR boxes and HDHomeRun captures often produce .ts files. Wrapping them as MTS lets you drop them onto an AVCHD project timeline alongside camcorder footage without container mismatch warnings.
• Standardize a mixed archive — if half your home-video archive is .ts from a set-top box and half is .mts from a Handycam, converting the TS side gives you one extension for every clip.
• Author Blu-ray-style discs — AVCHD-on-DVD and Blu-ray authoring suites (multiAVCHD, tsMuxeR-based tools) expect MTS or M2TS input streams; broadcast TS can confuse the muxer.
• Trim before re-encoding — combine container change with Time Range trimming to drop ads, intros, or dead footage from a long PVR capture in one pass.

For other moves around this family see TS to MP4, MTS to MP4, or the reverse MTS to TS.

TS vs MTS — Format Comparison

MTS and M2TS are the same AVCHD payload with different extensions: camcorders typically write .mts directly to SD card; Blu-ray and PC import tools rename to .m2ts. We default to .mts since that matches what AVCHD camcorders produce.

Codec and Quality Quick Guide

Frequently Asked Questions

My TS file already uses H.264 — do I lose quality converting to MTS?

Quality loss only happens if you re-encode. If your source TS carries an H.264 video stream and AC-3 (or compatible) audio, you can pick Constant Quality at a very low CRF or use a high preset and the output will be visually indistinguishable. AVCHD constrains H.264 profile/level, so if the source TS uses High10 or 4:2:2 profiles a real re-encode to AVCHD-compliant baseline/main/high 4:2:0 is unavoidable.

What's the difference between MTS and M2TS — and which should I use?

They are the same AVCHD container with two extensions. Camcorders write .mts directly to the SD card; when those clips are copied to a PC via Sony's PlayMemories Home or imported to Blu-ray authoring tools, they often get renamed to .m2ts. If your downstream tool expects .m2ts, just rename after download — the bytes are identical. We output .mts because that's what camcorders produce and what most AVCHD editors auto-detect first.

Will the converted MTS play in VLC, QuickTime, and Windows?

VLC plays MTS/M2TS natively on every desktop platform without extra codecs. Modern Windows (Movies & TV app, since Windows 10) plays MTS out of the box. macOS QuickTime can open MTS through the AVCHD package importer but historically prefers MP4/MOV — if you mainly want cross-platform playback rather than AVCHD-editor import, TS to MP4 is the friendlier target.

My TS file has multiple audio tracks (e.g. English + Spanish). Will both survive?

Broadcast TS streams often carry multiple audio PIDs. The converter keeps the primary audio track; secondary tracks are dropped because AVCHD's standard storage profile expects a single AC-3 or LPCM stream per clip. If preserving multi-language audio matters, convert to a container that allows multi-track natively such as TS to MKV.

Why can't I just rename .ts to .mts?

Sometimes you can. If the TS uses H.264 + AC-3 at AVCHD-compliant resolution/bitrate, a rename often works for VLC playback. But camcorder software validates the stream structure (PMT/PAT layout, GOP length, profile/level) before treating a file as AVCHD. A real conversion re-writes the stream to match those expectations, which is why renamed broadcast captures frequently fail to import into Sony Vegas or PMB.

What bitrate should I target for an MTS file?

AVCHD 1.0 caps at 24 Mbps for 1920x1080 video. Most Sony/Panasonic consumer cameras record around 17 Mbps for "FH" mode and 24 Mbps for "FX/PS". If you're archiving a TV broadcast that was already around 8-15 Mbps, matching the source bitrate avoids upscaling artifacts; if you need smaller files, Variable Bitrate around 10-12 Mbps is usually a comfortable floor for 1080p.

Can I trim a long TS recording while converting to MTS?

Yes. Open Trim, pick Time Range, and set the start time and duration. This is useful for PVR captures with long lead-ins or for cutting a single episode out of a multi-hour transport stream without first running a separate cut pass. For more advanced edits (multiple cuts, joining segments) use the dedicated Video Cutter.

Does the converter handle 4K TS files?

Yes — the resolution preset list goes up to 4K (3840x2160) and 5K/8K presets. Note that strict AVCHD 1.0 caps at 1920x1080; 4K MTS uses the AVCHD Progressive extension and only newer Sony/Panasonic camcorders and PCs with updated AVCHD importers will recognize it. If your target device is a 2010-era camcorder PC suite, downscale to 1080p during conversion.