Video to M2TS Converter

How to Convert Video to M2TS Online

1. Upload Your Video File: Drag and drop or click "+ Add Files" to select files from your computer. M2TS accepts a wide range of sources — MP4, MOV, MKV, AVI, WebM, WMV, FLV, MPEG-2, 3GP, TS, MTS, AVCHD, VOB and more. Batch conversion is supported, and files process on our servers with no sign-up required.
2. Pick Video Codec: The default is H.264 (the codec used by virtually every consumer AVCHD camcorder and most Blu-ray Disc titles). Switch to H.265 for ~50% smaller files at the same visual quality if your target player supports it, MPEG-2 for older standalone Blu-ray decks, or MPEG-4 / Xvid / DivX for legacy hardware. Pair with an AC-3, DTS, AAC, or PCM audio codec — AC-3 is the AVCHD-mandatory default.
3. Tune File Compression and Resolution (Optional): Open Advanced Options and choose a Quality Preset (Very High is the default) or switch to Specific file size, Constant Bitrate, Variable Bitrate, Constant Quality, or Constraint Quality. Set a Resolution Percentage, pick a preset (768p, 1080p, etc.), or enter a custom Width x Height. Use Trim with a start/duration time range to clip a specific segment.
4. Convert and Download: Click Convert. The output stays on screen until you download it — no watermark, no email gate, no file count limit.

Why Convert Video to M2TS?

M2TS (officially "Blu-ray Disc Audio-Video MPEG-2 Transport Stream") is the container that Blu-ray Disc Video and AVCHD camcorders write to. It was specified by the Blu-ray Disc Association in 2004 and is built on the MPEG-2 Transport Stream packet structure, but restricts video to H.262/MPEG-2, H.264/MPEG-4 AVC, or SMPTE VC-1 and audio to Dolby Digital, DTS, or LPCM (AVCHD narrows audio to AC-3 or LPCM). Converting to M2TS is what you do when you need bit-exact Blu-ray authoring, camcorder-compatible playback, or HD streaming to set-top hardware.

• Author a playable Blu-ray or AVCHD disc — tools like tsMuxeR, multiAVCHD, and Adobe Encore expect an H.264-in-M2TS stream that respects the Blu-ray bitrate ceiling (40 Mbps for video, 48 Mbps for the combined multiplex).
• Burn HD video to a regular DVD as AVCHD — AVCHD discs on DVD-R/DVD+R media play on most Blu-ray players. Encode at 18 Mbps for safe playback compatibility, up to 24 Mbps for top-spec players.
• Reimport footage into a Sony, Panasonic, or Canon camcorder workflow — every consumer AVCHD camcorder shipped since 2006 writes.MTS files internally and.m2ts when copied via the bundled software; reimporting requires the same container.
• Stream over local network to a hardware player — Plex, Kodi, and dedicated media boxes parse M2TS faster than MKV because the transport-stream packets are designed for streaming rather than file-based playback.
• Preserve a Blu-ray rip without re-muxing — keeping the source as M2TS retains the original Dolby Digital, DTS-HD, or TrueHD track structure rather than collapsing it into an MP4 stereo mixdown.
• Edit in Final Cut Pro or DaVinci Resolve via AVCHD ingest — both NLEs detect AVCHD M2TS folders (BDMV/STREAM/) and import them as native clips with timecode preserved.

M2TS vs MP4 vs MKV — Container Comparison

Codec and Bitrate Quick Guide

Need the reverse conversion? Jump to M2TS to MP4 for web-friendly output, or trim a long Blu-ray rip first with Trim M2TS. To shrink a finished file without changing the container, use the Video Compressor.

Frequently Asked Questions

What's the difference between M2TS and MTS?

They are the same Blu-ray BDAV transport stream — only the filename differs. AVCHD camcorders write to internal SDHC/SDXC cards using the 8.3 filename convention (FAT32 legacy), which forces the three-character .MTS extension. When the same files are copied to a computer or burned to a Blu-ray, the long-filename .m2ts extension is used. The bytes inside the file are byte-for-byte identical; you can rename .MTS to .m2ts (or vice versa) and any player will still open it.

What's the maximum bitrate I should use for M2TS?

The Blu-ray Disc specification caps video at 40 Mbps and the combined audio+video+subtitle multiplex at 48 Mbps. Exceeding either ceiling will produce an M2TS that plays in software (VLC, MPC-HC) but fails on hardware Blu-ray decks. For AVCHD on DVD-R media, the safe target is 18 Mbps — some players reach 24 Mbps but it's not guaranteed across the installed base. For AVCHD camcorder reimport, match the camcorder's original mode (typically 17 Mbps "FH" or 24 Mbps "FX/PS" on Sony / Panasonic models).

Can I put H.265/HEVC video inside an M2TS file?

xconvert allows it because ffmpeg writes a valid transport stream regardless, and software players (VLC, mpv, PotPlayer) will play it. However, the official Blu-ray BDAV spec only lists H.262, H.264, and VC-1 — H.265 inside.m2ts is non-standard and will be rejected by every consumer Blu-ray Disc player. UHD Blu-ray uses a different container (also transport-stream-based but with HEVC profile constraints) so an "HEVC M2TS" is mainly useful for software playback or media-server scenarios, not disc authoring.

What audio codec should I pick — AC-3, DTS, or AAC?

For AVCHD camcorder workflows and AVCHD discs, AC-3 (Dolby Digital) is mandatory — that's what xconvert defaults to. For Blu-ray Disc authoring, DTS and AC-3 are both spec-compliant and supported by every Blu-ray deck; DTS allows higher bitrates (up to 1.5 Mbps for core DTS) and slightly better quality. AAC is technically not in the Blu-ray spec, but software players accept it; only use AAC if your output target is a media server or PC, never a standalone disc player.

My.m2ts file plays in VLC but not on my Blu-ray player. Why?

Three common causes: (1) the bitrate exceeds the 40 Mbps video / 48 Mbps multiplex Blu-ray ceiling — re-encode with Constant Bitrate or Constraint Quality at a lower target; (2) the codec is non-standard for Blu-ray (HEVC, AV1, VP9 will not play on a Blu-ray deck) — switch to H.264 or MPEG-2; (3) the resolution or frame rate isn't a Blu-ray-allowed combination (1920x1080 at 23.976, 24, 29.97, or 59.94 fps are safe; 1080p60 was added in Blu-ray 3D and may not work on older decks). Try 1080p at 23.976 fps with H.264 + AC-3 as a safe baseline.

Will I lose quality converting MP4 to M2TS?

A little, but usually not visibly. This page always re-encodes — there's no stream-copy mode — so even H.264 in → H.264 out is a fresh encode rather than a remux. Keeping the same codec at a high preset (or Constant Quality / Variable Bitrate rather than a low fixed file size) stays in the same codec family, so the output is hard to tell apart from the source. Picking a different codec (e.g., MP4 H.265 in → M2TS H.264 out) is a cross-codec re-encode with a more visible generation of loss.

Can I trim a long Blu-ray M2TS rip during conversion?

Yes. In Advanced Options, expand Trim and switch from "Unchanged" to "Time Range," then enter a start time and duration in seconds. This is useful when ripping a long Blu-ray BDMV title set where only one chapter is needed, or when isolating a single AVCHD camcorder clip from a multi-hour capture without first running a separate trim pass. The trim happens during encoding so there's no extra quality loss compared to a two-step convert-then-trim workflow.

How big will my M2TS file be?

A 1080p H.264 M2TS at the AVCHD-typical 17 Mbps runs about 7.7 GB per hour. At the Blu-ray-typical 25 Mbps it's about 11.3 GB per hour. At the 40 Mbps Blu-ray maximum it's about 18 GB per hour. Switching the codec to H.265 at 10 Mbps gives roughly the same visual quality as H.264 at 20 Mbps and produces about 4.5 GB per hour — but loses standalone Blu-ray player compatibility (see the HEVC question above).