WMV to MTS Converter

How to Convert WMV to MTS Online

1. Upload Your WMV File: Drag and drop your .wmv file onto the page, or click "+ Add Files" to browse. Batch uploads are supported, so you can queue several clips and convert them in one pass.
2. Pick Quality Preset and Codec: Default is Very High (Recommended), which targets H.264 High Profile around 17-24 Mbit/s — the AVCHD spec's normal range. Pick Highest for archival masters, Medium if you need to fit a 32 GB SDHC card, or use Constant Bitrate / Variable Bitrate / Constant Quality / Constraint Quality for fine control. The encoder writes H.264 video + AC-3 audio inside an MPEG-2 Transport Stream — the exact AVCHD recipe Sony and Panasonic defined in 2006.
3. Set Resolution and Trim (Optional): Under Video resolution, keep Keep original, pick a Preset Resolutions value (1920×1080 is the AVCHD cap; 1280×720 for slower SD card writes), enter Width × Height manually, or scale by Resolution Percentage. Use Trim → Time Range to cut a single segment by start/duration before encoding.
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 WMV to MTS?

WMV is Microsoft's container, paired most often with the WMV9 / VC-1 video codec — efficient for Windows desktops in the early 2000s, awkward almost everywhere else two decades later. MTS is the on-camera filename for AVCHD: H.264 video and Dolby AC-3 audio multiplexed into an MPEG transport stream, introduced by Sony and Panasonic in 2006 and still the native format for many Handycam, HDR-CX, and Lumix camcorders. Converting WMV → MTS rewraps your old footage into a format that camcorder firmware, Blu-ray authoring tools, and NLEs treat as first-class native media.

• Restore footage to a Sony or Panasonic camcorder card — Camcorders expect AVCHD's directory structure (/PRIVATE/AVCHD/BDMV/STREAM/00001.MTS) and H.264 inside MPEG-TS. Re-encoding old WMV interviews to compliant MTS lets the camera play them back from the SD card.
• Feed a Blu-ray authoring workflow — Consumer Blu-ray players read AVCHD discs burned to DVD-R or BD-R. Authoring tools (Pinnacle, multiAVCHD, tsMuxeR) need true H.264 + AC-3 in transport-stream form, which WMV9/VC-1 in ASF cannot supply.
• Match NLE timeline media — Editors like DaVinci Resolve, Vegas Pro, and Power Director recognise .mts as AVCHD and route it to the right decoder. Mixing native MTS clips with re-encoded WMV reduces "media offline" rejections and codec-mismatch slowdowns.
• Cross-platform HD playback — VLC and MPC-HC play .mts everywhere; Windows-only WMV9 decoders are not installed on macOS, iOS, Android, or Linux by default. Converting once avoids forcing every viewer to install Windows Media Components.
• Preserve frame rate for interlaced sources — AVCHD 1.0 supports 1080i50/60 and 720p; AVCHD 2.0 (2011) added 1080p50/60 progressive at up to 28 Mbit/s. WMV interlaced flags are often dropped by third-party decoders — MTS keeps the field order intact for broadcast workflows.
• Future-proof an archive — H.264 has been standardised since 2003 and is decoded in hardware by virtually every chipset shipped after 2010. VC-1 hardware decode support has been retired in some modern GPUs.

WMV vs MTS — Format Comparison

Quality Preset Quick Guide

Frequently Asked Questions

What's the difference between MTS and M2TS — does this tool produce both?

MTS is the extension used on the SD card inside a camcorder; M2TS is what Windows Explorer shows after you import the file via Sony PlayMemories or Panasonic HD Writer. The underlying bytestream — H.264 + AC-3 in MPEG-2 Transport Stream — is identical. This tool writes .mts. If you need the .m2ts extension specifically for a Blu-ray disc workflow, use WMV to M2TS instead.

Will my converted MTS actually play back on a Sony or Panasonic camcorder?

Conversion produces a spec-compliant H.264 + AC-3 transport stream, but camcorders also require the AVCHD directory layout (BDMV/STREAM/, .MPL playlists, .CPI clip info). The MTS file itself will play in any AVCHD-aware player or NLE, but to play back from the camcorder you'll need to (a) copy into the existing AVCHD folder structure on the SD card, or (b) reburn the disc using AVCHD authoring software that rebuilds the playlist metadata.

My source WMV is 4K — will I lose resolution converting to MTS?

AVCHD 1.0 caps at 1920×1080, and AVCHD 2.0 still tops out at 1080p60. There is no consumer AVCHD profile that carries 4K. The converter will downscale to the nearest preset (3840×2160 → 1920×1080 by default) unless you pick a custom width. For 4K-native delivery, use WMV to MP4 instead, which carries H.264/H.265 at any resolution.

Why is my output MTS larger than the input WMV?

WMV9 / VC-1 at typical streaming bitrates (1-5 Mbit/s) is much lower-rate than the AVCHD spec range (12-24 Mbit/s). When the Quality Preset targets Very High or Highest, the encoder writes a bitstream sized for HD camcorder masters — often 3-5× the input. Drop to Medium or use Specific file size if you need to keep the file small.

Can I keep my WMV's WMA audio, or does it have to become AC-3?

AVCHD/MTS only carries Dolby AC-3 or LPCM audio per the AVCHD spec. WMA inside a transport stream is not valid AVCHD and most camcorders/Blu-ray players will reject it. The converter transcodes the audio track to AC-3 (default 256 kbps stereo). If you specifically need to keep AC-3 lossless, pick LPCM in the audio codec list — file size roughly doubles.

Does the converter handle interlaced WMV (1080i) correctly?

Yes — interlaced WMV9 / VC-1 sources are decoded as fields and re-encoded as 1080i H.264 if the Quality Preset and Resolution Preset match an interlaced target (1080i50/60). If you'd rather deinterlace to 1080p, pick a 720p or 1080p progressive preset and the converter will write a progressive H.264 stream.

Will my files be private?

Files upload over HTTPS, are processed server-side on xconvert's infrastructure, and deleted from temporary storage after a few hours. No account, no watermark, no logged-in identity required.

What if I need the reverse direction or a different output?

Use MTS to WMV for the reverse, WMV to MP4 for general-purpose H.264 in MP4 (more universal than MTS for web/mobile), or WMV to AVCHD if you want the broader AVCHD label rather than the camcorder-side .mts extension. To shrink an existing MTS file, see Compress MTS; to cut a clip without re-encoding the rest, use Trim MTS.

Is there a file size limit?

Standard accounts handle WMV files up to several GB per upload — practically more than a 64 GB SDHC card can hold. Conversion time scales with source bitrate and duration; a 1-hour 1080p source typically finishes in 3-8 minutes depending on queue load.