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Supports: WTV
WTV is the recording format Microsoft introduced with the Windows Vista "Media Center TV Pack 2008" update and made standard across all Windows 7 Media Center editions, replacing the older DVR-MS container. WTV wraps MPEG-2 video with MPEG-1 Layer II or Dolby Digital AC-3 audio, plus a metadata block that may carry PlayReady DRM. Microsoft discontinued Windows Media Center with Windows 10 (announced May 2015), so the program that natively reads WTV no longer ships with any current OS — converting your recordings to a portable container is the practical way to keep them watchable.
DivX is an MPEG-4 Part 2 Advanced Simple Profile codec, originally released by DivX Networks in 2001 and trademarked with DivX 4.0. The.divx file extension is an AVI extension — same RIFF container, but flagged for DivX-aware players. For DVD-Home-Theater-class set-top boxes from the mid-2000s onward, DivX in AVI is often the only modern codec they play.
| Property | WTV | DivX (.divx / AVI) |
|---|---|---|
| Container | Windows Recorded TV (proprietary) | AVI (RIFF) with DivX extensions |
| Typical video codec | MPEG-2 (also MPEG-4 in later versions) | DivX = MPEG-4 Part 2 ASP |
| Typical audio codec | MPEG-1 Layer II or AC-3 | MP3, AC-3, or AAC |
| DRM | PlayReady supported; "copy-once" tags possible | None |
| Created by | Windows Media Center Stream Buffer Engine | Encoder software (DivX, FFmpeg, HandBrake with Xvid) |
| Replaced | DVR-MS (the XP-era format) | — (still active, MPEG-4 ASP family) |
| Discontinued | Yes — Windows Media Center dropped from Windows 10 (2015) | No, but largely supplanted by H.264 |
| Native playback today | Microsoft Stream Buffer Engine only | VLC, MPC-HC, PotPlayer, DivX Certified hardware |
| Typical file size (2h SD) | 4-8 GB | 1.0-2.0 GB at 1500 kbps |
| Extension | .wtv | .divx (AVI variant) |
| Profile | Max resolution | Max VBV bitrate | Where it plays |
|---|---|---|---|
| Home Theater (HT) | 720×576 @ 25 fps (PAL) or 720×480 @ 30 fps (NTSC); 640×480 baseline | ~9.7 Mbps | Most DivX Certified DVD players from ~2005 onward |
| DivX HD 720p | 1280×720 @ 30 fps | ~10 Mbps | DivX Certified TVs and Blu-ray players |
| DivX HD 1080p | 1920×1080 @ 30 fps | ~20 Mbps | DivX Plus capable hardware (H.264 inside MKV) |
| DivX Plus HD | 1920×1080 @ 60 fps | ~20 Mbps | DivX Plus Certified (uses H.264, not classic DivX) |
For the classic.divx in AVI workflow, target 1300-2000 kbps for SD content (≤576p) and 2500-4000 kbps for 720p. If your goal is a DVD-Home-Theater-compatible disc, keep the resolution at 720×480 (NTSC) or 720×576 (PAL) and avoid B-VOPs with interlacing.
No. WTV that carries a PlayReady "copy-once" tag — common for premium-channel CableCARD recordings — refuses to demux outside the original Windows Media Center machine. Most over-the-air ATSC recordings are DRM-free and convert without issue. If the conversion fails immediately, your file is most likely protected, and removing that protection is not something this tool (or any legitimate tool) does.
If your target is a DivX Certified standalone DVD player, car head unit, or older smart TV from the late 2000s, those devices typically play AVI with DivX/Xvid but reject H.264-in-MP4 or HEVC. For modern phones, computers, and TVs released after roughly 2015, MP4 with H.264 is the better choice — try the WTV to MP4 converter instead.
The file structures are nearly identical — both use the RIFF/AVI container. The.divx extension is a marker indicating the file holds DivX-encoded video and signals DivX Certified hardware to load the right codec. Renaming a DivX-encoded.avi to.divx (or vice versa) does not change the bytes; only the container hint changes.
WTV stores commercial-skip metadata inside the container. When converted to DivX/AVI, that metadata is dropped because AVI has no equivalent field. The video and audio are preserved, but any "show vs. ad" boundary tags from Windows Media Center will not survive — use the Trim Time Range during conversion to cut ads instead.
They are siblings, not the same codec. Both implement MPEG-4 Part 2 ASP. Xvid forked from the OpenDivX codebase in 2001 after DivX Networks closed the source. In practice, DivX Certified hardware plays Xvid-encoded video and vice versa, because the underlying bitstream conforms to the same MPEG-4 ASP standard.
For a 4.7 GB single-layer DVD-R holding about two hours of video, target 1500-1800 kbps for the video stream and 192 kbps AC-3 audio. That keeps you inside DivX Home Theater limits while filling the disc. For 90 minutes or less, you can push to 2200-2500 kbps. Keep resolution at 720×480 (NTSC) or 720×576 (PAL) so standalone players accept it.
MPEG-2 in WTV uses constant or variable bitrates around 8-20 Mbps because broadcast TV streams are not heavily compressed. DivX (MPEG-4 ASP) achieves similar perceived quality at 1500-3000 kbps — that is the entire point of the format. A 6 GB WTV becoming a 1.5 GB DivX is normal, not a sign of quality loss, though you can raise the bitrate or pick Very High preset if you want closer-to-original fidelity.
Yes, if the WTV uses AC-3 (Dolby Digital) audio — most US ATSC broadcasts do. DivX in AVI supports an AC-3 audio track, so the 5.1 channels pass through. If the WTV uses MPEG-1 Layer II stereo (common on European DVB), the output will also be stereo. Pick AC-3 from the Audio Codec dropdown to preserve multi-channel audio.
Mixed results. TVs with a DivX Certified logo (common on Samsung, LG, and Philips models 2007-2015) play.divx and.avi from USB without issue. Newer TVs that dropped the DivX logo around 2016-2018 may still play AVI via their generic media player, but compatibility is hit-or-miss — for those, convert WTV to MKV with H.264 instead. If your TV is a 2007-2014 DivX Certified model,.divx is the safer pick.
Both are Microsoft-origin formats, but WMV uses the WMV1/2/3 video codec rather than MPEG-2, and lacks the broadcast metadata blocks WTV carries. The output settings are the same; if you have WMV files instead of WTV, use WMV to DivX. For the reverse direction (.divx back into a Windows-friendly format), DivX to MP4 is the common path.