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Supports: WMV
WMV (Windows Media Video) is Microsoft's ASF-based codec/container family, used heavily through the 2000s for screen recordings, corporate training videos, and Windows Movie Maker exports. WTV (Windows Recorded TV Show) is the container Microsoft introduced with the Windows Media Center TV Pack 2008 and shipped in every Media Center edition of Windows 7 — it stores MPEG-2 video with MPEG-1 Layer II or Dolby Digital AC-3 audio, plus broadcast metadata (program title, episode info, EPG data, closed captions). Converting WMV into WTV is the practical way to fold legacy WMV clips into a Media Center recorded-TV library so they show up alongside DVR captures with proper artwork and metadata. Typical reasons:
If you only want to go the other way for general playback, see WTV to MP4 or WTV to WMV. To shrink an existing WMV before re-wrapping, use Compress WMV.
| Property | WMV | WTV |
|---|---|---|
| Container | ASF (Advanced Systems Format) | Proprietary Microsoft container (Stream Buffer Engine) |
| Introduced | 1999 (WMV 7); WMV 9 / VC-1 in 2003 | Windows Media Center TV Pack 2008 (Windows Vista / 7) |
| Typical video codec | WMV1 / WMV2 / WMV3 (VC-1) | MPEG-2 (also supports MPEG-4 / H.264 via SBE) |
| Typical audio codec | WMA1 / WMA2 / WMA Pro | MPEG-1 Layer II or Dolby Digital AC-3 (ATSC A/52) |
| Metadata | ASF content descriptor (artist/title/copyright) | EPG fields — title, episode, channel, broadcast date, captions |
| Max capture bitrate | Codec-dependent (~20 Mbps for WMV 9) | 30 Mbps per Microsoft SBE docs |
| Primary use | Web/local video, Movie Maker exports, screen capture | DVR recording inside Windows Media Center |
| Predecessor | None (was itself Microsoft's mainline video format) | DVR-MS (Windows XP Media Center Edition) |
| DRM | Optional (Windows Media DRM) | Optional, set per recording via broadcaster CGMS-A flag |
| Playback on Windows 10/11 | Native via Windows Media Player / Movies & TV | No native support (Media Center was removed in Windows 10) |
| Mode | What it does | Pick when |
|---|---|---|
| Quality Preset | One-click Highest -> Lowest preset (default "Very High") | You want a sensible default with no tweaking |
| Specific file size | Auto-tunes bitrate to hit an exact MB target | The destination drive or DVD has a hard ceiling |
| Constant Bitrate (CBR) | Fixed bits per second across the whole video | Library-style consistency across many WTV files |
| Variable Bitrate (VBR) | Spends more bits on motion-heavy scenes, fewer on static | Best quality-per-MB; default for most archives |
| Constant Quality (CRF) | CRF slider — lower number = higher quality | Consistent perceived quality across a batch of clips |
| Constraint Quality (capped VBR) | VBR with a ceiling bitrate | Streaming to a Media Center extender with a bandwidth ceiling |
Not natively. Windows Media Center was removed in Windows 10, so neither Windows 10 nor Windows 11 ships with built-in WTV playback. VLC opens.wtv files directly without extra codecs, and MediaPortal 2 / SlimTV imports them with metadata. If you need to play the file on a modern Windows machine without third-party software, convert WMV to MP4 instead via WMV to MP4.
Microsoft's Stream Buffer Engine documentation describes WTV as built around MPEG-2 video with MPEG-1 Layer II or AC-3 audio, captured at up to 30 Mbps. In practice the WTV container can also hold MPEG-4 / H.264 streams that Media Center recorded from certain digital tuners, but Media Center playback and library tools were tuned for the MPEG-2 + AC-3 combination. For widest Media Center / extender compatibility, accept the default codec choice on conversion.
DVR-MS was the original Windows XP Media Center Edition format. WTV replaced it starting with the Windows Media Center TV Pack 2008 on Vista and shipped as the default on Windows 7 Media Center. Both store MPEG-2 video and MPEG-1 Layer II audio, but WTV added richer metadata, better timeshift handling via the Stream Buffer Engine, and digital cable / OTA DRM support. Windows 7 included a built-in converter (right-click.wtv -> "Convert to.dvr-ms Format", or \Windows\ehome\WTVConverter.exe for batch) for tools that only accept the older format.
WMV 9 / VC-1 is more modern and bit-efficient than the MPEG-2 codec WTV typically wraps. Re-encoding to MPEG-2 at visually-equivalent quality often increases file size 30-80%. To keep the result closer to the original size, pick Specific file size and target the WMV's original size, or use Constant Quality with a higher CRF value. Expect some growth — it's the cost of using a broadcast-era codec in a Media Center-compatible container.
WTV is designed to carry CEA-608/708 closed captions from broadcast TV, but standard WMV files almost never include caption tracks — they typically have only ASF content-descriptor metadata. The converter writes a clean WTV container with the picture and audio intact; if your WMV had no captions to begin with, none will appear in the output. Chapters are similarly source-dependent; most WMV exports from Movie Maker don't carry chapter markers.
Yes. Upload as many WMV files as you want — there's no quantity cap. Apply the same Quality Preset and resolution settings across the batch, or set per-file options. Each file converts in parallel on our servers and downloads as individual.wtv files or a single ZIP. Useful when consolidating an old Movie Maker archive into a single Recorded TV library.
Under Trim, pick Time Range and enter a start time + duration in seconds (e.g., 12.5 for 12.5 seconds) or HH:MM:SS.sss format (00:01:30.500). Trimming runs before encoding, so cutting a 90-minute WMV down to the 22-minute episode body skips re-encoding the rest entirely and produces a much smaller WTV. For more granular splits, use Video Cutter first and then convert each segment.
Only if the source was. Microsoft's documentation notes that WTV copy protection is set per recording based on the broadcaster's CGMS-A flag — meaning DRM-protected playback was tied to the specific Media Center PC that recorded the stream. WTV files created by re-wrapping your own WMV content do not carry that flag and play freely on any Media Center / VLC / MediaPortal install.
Yes — see WTV to WMV for the reverse direction. The round-trip won't be lossless (you'll re-encode MPEG-2 back to a WMV codec), so keep your original WMV files if you need a master copy.