WMV to M2TS Converter

How to Convert WMV to M2TS Online

1. Upload Your WMV File: Drag and drop, or click "+ Add Files" to select your.wmv clips. Batch uploads are supported, and conversion happens on our servers — no install, no sign-up, no watermark.
2. Pick Video Codec and Quality Preset: Choose H.264 (the default and the safest match for Blu-ray and AVCHD compatibility), H.265 / HEVC for a smaller file at the same quality, or MPEG-2 if your target authoring tool prefers the legacy mandatory codec. Pair it with a Quality Preset — Very High is the recommended default; pick Highest for archival, Medium/Low if you're staying under a disc bitrate budget.
3. Resolution, Bitrate, and Trim (Optional): Keep the source resolution, pick a preset (720p, 1080p, 1440p, 2160p), or enter exact width × height. Switch the rate-control mode to Constant Bitrate (predictable size, good for disc authoring), Variable Bitrate, Constant Quality (CRF), or Constraint Quality. Use Trim under Time Range to clip the start, end, or a specific span.
4. Convert and Download: Click Convert. The processed.m2ts streams to your downloads folder ready to drop into a Blu-ray authoring project, an AVCHD folder structure, or a hardware player that expects BDAV.

Why Convert WMV to M2TS?

WMV files are Microsoft's Advanced Systems Format (ASF) wrapped around the WMV 7/8/9 or VC-1 codec, with WMA audio. M2TS is the file extension of the Blu-ray Disc Audio-Video (BDAV) MPEG-2 Transport Stream — the same container used on commercial Blu-ray discs and on AVCHD camcorder cards. Converting WMV to M2TS rewraps your video into a transport stream that disc authoring software, set-top players, and AVCHD-compatible devices can ingest directly.

• Blu-ray and AVCHD disc authoring — Tools like multiAVCHD, tsMuxeR, and many commercial authoring suites expect M2TS source files. WMV is rarely accepted; M2TS slots straight into the BDMV/STREAM folder.
• Hardware player compatibility — Standalone Blu-ray players, PlayStation consoles, and many smart TVs decode the BDAV transport stream natively. Most do not play WMV at all, especially on non-Windows hardware.
• Stream-safe muxing — Transport streams were designed for broadcast and packet loss, so.m2ts files are robust to mid-file edits, appending, and concatenation in a way that ASF/WMV is not.
• Lossless rewraps from VC-1 source — If your WMV is already VC-1 (WMV 9), VC-1 is one of the three mandatory Blu-ray video codecs (alongside H.262 and H.264). Re-encoding to H.264 is usually preferred for player compatibility, but the conversion path is well-defined.
• Modernizing legacy archives — Lots of corporate training, lecture capture, and screen-recording libraries from 2003–2012 are stuck in WMV. M2TS is a future-proofer for HD archives because BDAV is still the active spec (5th edition published January 2018) and decoders are ubiquitous.
• Cross-platform playback — Native WMV playback on macOS effectively ended when Flip4Mac was discontinued in 2020; on Linux it requires FFmpeg-backed players. M2TS plays in VLC, MPC-HC, PotPlayer, and any modern hardware decoder.

WMV vs M2TS — Format Comparison

Codec and Quality Cheat Sheet for M2TS

Frequently Asked Questions

Will the output play on a standalone Blu-ray player?

The.m2ts file produced here is the BDAV transport stream — the same wrapper a Blu-ray player expects. To boot from a disc you still need a full BDMV folder structure (with INDEX.BDMV, MovieObject.bdmv, and a PLAYLIST/CLIPINF/STREAM layout), which is built by authoring software like tsMuxeR, multiAVCHD, or DVDFab. Most players will also play raw M2TS from a USB stick, with some caveats around chapter and menu navigation.

Should I pick H.264, H.265, or MPEG-2 when converting from WMV?

H.264 is the safest default. It's one of three mandatory Blu-ray codecs (alongside H.262/MPEG-2 and VC-1) and the only mandatory AVCHD codec, so every conformant player can decode it. Pick H.265/HEVC if your target is a UHD Blu-ray workflow or you want a smaller file. Pick MPEG-2 only if your authoring tool specifically asks for it — files are roughly twice the size of H.264 at matched quality.

My source WMV is already VC-1. Can I avoid re-encoding?

In principle yes — VC-1 is a Blu-ray mandatory codec, so the bitstream itself is allowed inside M2TS. In practice the converter re-encodes to your selected output codec to guarantee Blu-ray-conformant packet sizes (192 bytes) and timing. If you specifically need a pure-VC-1 remux, do the conversion at Highest quality with H.264 or test playback before authoring; for most users H.264 output is preferable for player compatibility.

Why is my M2TS larger than the WMV I started with?

WMV files from 2005–2012 were typically encoded for 1–3 Mbit/s internet streaming. M2TS for Blu-ray or AVCHD targets disc-quality bitrates — H.264 at 8–20 Mbit/s for 1080p is normal, and the MPEG-2 transport stream itself adds packet overhead (4 bytes per 188-byte payload). The output is larger because it's higher quality and more robust to bitrate spikes, not because it's wasteful. If size matters, drop the Quality Preset to Medium or use Constant Bitrate with a target you choose.

What's the difference between.m2ts and.mts files?

Both are the same BDAV MPEG-2 Transport Stream. The .m2ts extension is what Blu-ray discs and PCs use (long filename support). The .mts extension is what AVCHD camcorders write to SDHC/SDXC cards (legacy 8.3 filename limit). The bytes inside are identical — many players accept either, and you can rename one to the other. xconvert offers a separate WMV to MTS page if your AVCHD pipeline specifically expects .mts.

Will my Windows Media Audio (WMA) soundtrack convert correctly?

Yes. The WMA track is decoded and re-encoded into a Blu-ray-permitted audio codec — by default AC-3 (Dolby Digital), which is mandatory on every Blu-ray and AVCHD player. If you need a different audio target (DTS, AAC, lossless LPCM), open Advanced Options and change the audio codec; AVCHD strictly only allows AC-3 or LPCM, so stick with those if you're feeding an AVCHD authoring chain.

Is there a file-size limit?

The converter runs on our servers, so the practical limit is upload size and connection speed — typically multi-GB on a desktop. The Blu-ray spec caps total AV bitrate at 48 Mbit/s and video at 40 Mbit/s, so a 90-minute HD film tops out around 32 GB; AVCHD on SD media is capped at 24 Mbit/s (28 Mbit/s for 1080p50/60). Stay within those numbers if you intend to burn a conformant disc.

Can I go the other direction later?

Yes. If you need to edit on Mac or share on the web, M2TS to MP4 rewraps the H.264 video into a more portable container. For Final Cut or DaVinci Resolve workflows, WMV to MOV is often a better intermediate. For Matroska-based archival pipelines, see WMV to MKV.

How do I trim to a specific segment before converting?

Open Advanced Options, set Trim to a Time Range, and enter the start time and duration in hours:minutes:seconds. The trim is applied during the encode, so the output M2TS contains only the segment you specified — useful when you're authoring a Blu-ray chapter from a longer screen recording or lecture capture.