WTV to AVCHD Converter

How to Convert WTV to AVCHD Online

1. Upload Your WTV File: Drag and drop or click "+ Add Files" to select one or more .wtv recordings from Windows Media Center. Batch is supported, and 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.
2. Pick Quality Preset and File Compression Mode: AVCHD targets H.264 video plus AC-3 audio in an MPEG-2 Transport Stream. Default is the Very High (Recommended) Quality Preset. Switch to Constant Bitrate for a fixed pipe (set 17,000–24,000 kbps to stay inside the AVCHD 1.0 spec), Variable Bitrate for smaller files at the same perceived quality, Constant Quality for CRF-style encoding, or Specific file size to target an exact megabyte budget.
3. Set Video Resolution and Trim (Optional): Use Keep original to preserve the recording's native resolution, pick a Preset Resolution (1080p, 720p, 480p), enter Width x Height or Width / Height (Keep aspect ratio), or scale by Resolution Percentage. Under Trim, leave Unchanged for the full recording or set a Time Range to clip out commercials and station IDs.
4. Convert and Download: Click Convert. Output is an AVCHD-compliant stream suitable for Sony / Panasonic camcorder import folders, Blu-ray authoring tools like multiAVCHD, and standalone Blu-ray players that accept AVCHD discs. No sign-up, no watermark.

Why Convert WTV to AVCHD?

WTV is Microsoft's container for recordings made by Windows Media Center, introduced with the Windows Media Center TV Pack 2008 for Vista and shipped in every Media Center edition of Windows 7. Inside, the elementary streams are usually MPEG-2 video with MPEG-1 Layer II or Dolby Digital AC-3 audio, but the WTV container itself is proprietary and was never adopted by camcorders, Blu-ray authoring tools, or set-top players. AVCHD, by contrast, is a Sony / Panasonic camcorder specification announced in 2006 that wraps H.264 video and AC-3 (or uncompressed LPCM) audio inside an MPEG-2 Transport Stream, with a BDMV folder layout derived from Blu-ray. Converting WTV to AVCHD gets your recorded TV out of the Media Center silo and into the same ecosystem your camcorder footage already lives in.

• Burn recorded TV to AVCHD Blu-ray discs — A standard DVD-R or DVD+R authored as AVCHD plays back at HD resolution on most Blu-ray players. WTV won't author; AVCHD will, via multiAVCHD or tsMuxeR.
• Mix Media Center captures with camcorder footage — Sony and Panasonic NLEs (Catalyst, HDWriter, Movie Studio) and timelines in Premiere Pro, Final Cut Pro, and DaVinci Resolve accept AVCHD natively. Dropping a .wtv on those timelines either fails or transcodes silently with mismatched frame rates.
• Escape DRM and Media Center end-of-life — WTV files recorded from premium cable channels can carry CGMS-A "copy-once" flags that lock them to a single PC, and Microsoft removed Windows Media Center entirely starting with Windows 10. Converting copy-freely .wtv files to AVCHD before a Windows upgrade or hardware swap keeps the recordings playable.
• Use AVCHD on Blu-ray hardware that rejects WMV/MPEG-2 discs — Most consumer Blu-ray players accept AVCHD folder discs (BDMV layout on DVD media); few accept WMV or arbitrary MPEG-2 files.
• Archive at AVCHD's ~17–24 Mbps cap rather than WTV's bloated raw stream — Media Center records broadcast streams without re-encoding, so a 1-hour HD recording can hit 8–10 GB. Re-encoded to AVCHD at 17 Mbps it lands around 7.5 GB and plays on hardware that doesn't speak the WTV container at all.
• Re-encode 5.1 surround to AVCHD-compliant AC-3 — Many WTV recordings already carry AC-3 5.1; converting to AVCHD remuxes that audio into the AC-3 64–640 kbps range the spec mandates, so it survives Blu-ray authoring.

WTV vs AVCHD — Format Comparison

AVCHD Quality / Bitrate Quick Guide

Frequently Asked Questions

Why can't I just play my WTV file on a Blu-ray player or camcorder?

The WTV container is proprietary to Windows Media Center and was never licensed to consumer-electronics manufacturers. Blu-ray players, AVCHD camcorders, and most editing software ship decoders for H.264, AC-3, and MPEG-2 Transport Stream — but not for the WTV wrapper itself. Converting to AVCHD re-wraps the streams in an MPEG-2 TS inside the BDMV folder structure that those devices already understand.

Will the conversion work on DRM-protected WTV recordings?

No. WTV files recorded from premium cable or copy-once broadcasts carry CGMS-A flags that Windows Media Center honors, and the encrypted payload can't be re-encoded by any third-party tool. The converter works on "copy-freely" recordings (over-the-air ATSC, unencrypted ClearQAM, and most basic-cable channels) — the same files Windows lets you copy to a USB drive without errors.

My WTV is 1080i 60. What output should I pick for AVCHD?

For AVCHD 1.0 compatibility (every Blu-ray player), pick a 1080i preset and stay at or below 24 Mbps with H.264 High Profile Level 4.1. If your target player supports AVCHD 2.0 (most players sold after 2011), you can go to 1080p60 at up to 28 Mbps. Keeping interlace mode preserves the broadcast's field cadence; switching to 1080p30 deinterlaces and halves temporal motion.

Will the 5.1 AC-3 audio from my cable recording survive?

Yes, if the WTV already carries AC-3. AVCHD natively supports AC-3 at 64–640 kbps in stereo or 5.1, so the converter re-encodes inside that envelope. WTV files with MPEG-1 Layer II audio (common on European DVB-T captures) are transcoded to AC-3 because AVCHD doesn't accept MP2. Either way the output is Dolby Digital, which both Blu-ray players and camcorder import folders expect.

Can I burn the output to a regular DVD-R and play it as AVCHD?

Yes — that's the original purpose of AVCHD on DVD media. Author the converted .m2ts files with multiAVCHD or tsMuxeR to produce the BDMV folder layout, then burn the folder structure (not a video DVD) to a DVD-R or DVD+R. Most Blu-ray players released after 2008 read AVCHD discs at full HD resolution from a standard 4.7 GB DVD-R, capped at roughly 30 minutes of HQ-mode video per disc.

Why is my AVCHD output larger than I expected?

WTV recordings are typically stored at the broadcast's native bitrate (15–19 Mbps for 1080i ATSC) without re-encoding. AVCHD's H.264 is more efficient than MPEG-2, so re-encoding to 17 Mbps CBR usually shrinks the file. But if your source was lower-bitrate MPEG-2 and you picked Very High at 24 Mbps CBR, the output can be larger than the input. Drop to Variable Bitrate or Constant Quality (CRF ~22) for size parity. After converting you can also run the result through compress AVCHD for a smaller archive.

Will Windows Media Center metadata (title, guide info, chapters) carry over?

No. WTV's metadata block (program title, EPG description, station call sign, DRM flags) is Microsoft-specific and isn't part of the AVCHD spec. The audio and video streams transfer; the show-info tags are dropped. If you need those, export the WTV's metadata separately with wtvinfo or DVRMSToolbox before converting.

What if I just want a single playable file instead of the full BDMV folder?

This converter outputs the AVCHD-compatible stream directly. For a flat file you can play on a phone, laptop, or smart TV without the BDMV folder ritual, convert WTV to MP4 gives you an .mp4 with the same H.264 + AC-3 streams in a more universally accepted container. Use AVCHD when you specifically need camcorder-import or Blu-ray-authoring compatibility; use MP4 for general playback.

Is there a file size limit?

The converter processes your file on our servers, so the practical ceiling depends on upload size and connection speed on our servers-side cap. A 1080i one-hour WTV at ~8 GB processes fine on modern desktops and most laptops; multi-hour bulk recordings are best chopped into per-episode clips with the Trim time-range control before converting. There's no account, no watermark, and no daily quota.