WTV to MP4 Converter

How to Convert WTV to MP4 Online

1. Upload Your WTV File: Drag and drop or click "Add Files" to select WTV recordings — files saved by Windows Media Center, typically from C:\Users\Public\Recorded TV\. Batch is supported; queue an entire season of recordings and each file converts in parallel.
2. Pick Quality Preset or Bitrate Mode: Default is the "Very High (Recommended)" Quality Preset, which targets visually-lossless H.264 inside an MP4 container. Switch to Specific file size to cap output at an exact MB target, Constant Bitrate for predictable streaming sizes, Variable Bitrate for smaller files at the same quality, or Constant Quality to fine-tune with a CRF slider (18 = visually lossless, 23 = default, 28 = noticeably smaller). The MPEG-2 video inside most WTV files re-encodes cleanly to H.264 or H.265 with roughly 40-60% size reduction at the same perceived quality.
3. Resize or Trim if Needed (Optional): Under Video resolution, keep original (most WTV captures are 720x480 NTSC SD, 720x576 PAL SD, 1280x720, or 1920x1080), pick a Preset Resolution, scale by Resolution Percentage, or enter custom Width × Height. Under Trim, pick Time Range and enter start time + duration to chop out ad breaks or trim recording overruns — both fields accept seconds (12.5) or HH:MM:SS.sss format (00:31:45.500).
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. Download individually or as a ZIP.

Why Convert WTV to MP4?

WTV (Windows Recorded TV Show) is Microsoft's container for over-the-air TV captured by Windows Media Center, introduced with Windows Media Center TV Pack 2008 for Vista and shipped in every Windows 7 Media Center edition. Inside, it carries MPEG-2 or MPEG-4 video and AC-3 (Dolby Digital) or MPEG-1 Layer II audio. Microsoft stopped development after Windows 7 in 2009, removed Media Center from Windows 8.1 Pro, and dropped it entirely from Windows 10 in 2015; the Electronic Program Guide service ended January 14, 2020. WTV plays in fewer and fewer places each year, while MP4 (ISO/IEC 14496-14:2003) plays everywhere. Common reasons to convert:

• Open WTV recordings on Windows 10 / 11 — Windows Media Player Legacy and the Movies & TV app refuse to open.wtv files; only the discontinued Media Center could. Converting to MP4 with H.264 gives you a file that opens in the built-in Media Player and Movies & TV with no extra codec packs.
• Watch on iPhone, iPad, Android, Mac, smart TV, Roku, Chromecast — none of these play WTV natively. MP4 + H.264 + AAC is the format every consumer device made since 2010 supports out of the box.
• Edit recordings in modern software — DaVinci Resolve, CapCut, Shotcut, Premiere Pro, and Final Cut Pro do not import.wtv. They all import MP4 directly, so converting first unlocks trimming, color correction, and re-cuts.
• Cut file size for archive or upload — raw WTV recordings of broadcast HDTV often run 4-7 GB per hour at MPEG-2 ~15 Mbps. Re-encoding to H.264 typically cuts that to 1.5-2.5 GB; H.265 around 1-1.5 GB at equivalent visual quality, without losing the 1080i broadcast detail.
• Strip ads and recording padding — Windows Media Center pads recordings with extra minutes on each end. The Trim option lets you drop those plus commercial breaks in one pass rather than re-encoding twice.
• Migrate off Media Center before Windows 7 / 8.1 retirement — Windows 7 lost extended support in January 2023; Windows 8.1 in January 2023. Converting your library to MP4 now keeps the recordings playable on any future device, not tied to a discontinued Microsoft application.

WTV vs MP4 at a Glance

Quality and Bitrate Mode Quick Guide

Codec Choice Quick Guide

If you want a different output container, see WTV to MKV (best for retaining multiple audio tracks) or WTV to AVI. To shrink an MP4 you already converted, use Compress MP4.

Frequently Asked Questions

Why won't my WTV file play in Windows 10 or Windows 11?

Windows Media Center was the only first-party application that opened.wtv natively, and Microsoft removed it from Windows 10 in 2015 (the upgrade strips it out entirely). The built-in Movies & TV app and Windows Media Player Legacy do not register.wtv. Converting to MP4 with H.264 produces a file that opens in every default Windows player without installing codec packs or third-party tools.

Can I convert a copy-protected (DRM) WTV file?

No, and no online tool legally can. WTV uses Microsoft's PlayReady DRM: when Windows Media Center records a copy-flagged broadcast (most cable / satellite premium channels, many network primetime shows in the US), PlayReady fingerprints the recording to the original PC's hardware. The file refuses to play on any other machine — even the same PC after a Windows reinstall — and refuses to convert. Only unprotected WTV files (typically over-the-air ATSC recordings of clear-flagged broadcast TV) convert. If your file opens in VLC on the recording PC, it's unprotected and will convert here.

What codecs does a WTV file actually contain?

WTV is a container, not a codec. Inside, video is encoded with MPEG-2 (the ATSC broadcast standard) and, less commonly, MPEG-4 Part 2. Audio is Dolby Digital AC-3 (ATSC A/52) or MPEG-1 Audio Layer II. WTV replaced the earlier DVR-MS format from Windows XP Media Center — DVR-MS used the ASF container, while WTV uses Microsoft's own custom container format.

Will the conversion lose video quality?

Re-encoding from MPEG-2 to H.264 at the default "Very High" preset (CRF ~20) is visually indistinguishable from the source in side-by-side viewing on a typical TV or monitor. The output file is 60-70% smaller. If you want bit-exact preservation, pick Constant Quality with CRF 18, which is the standard "visually lossless" threshold. WTV is a lossy capture to begin with (broadcast MPEG-2 at 15-19 Mbps), so a single transcode at sensible settings doesn't degrade noticeably.

How do I get rid of the ad breaks and the extra recording padding?

Use the Trim option after upload. Select Time Range and enter a start time (skip the pre-program padding Windows Media Center adds) and a duration (stop before the post-program padding). For a single ad break in the middle, the fastest workflow is to convert twice — once for the pre-ad segment, once for the post-ad — then concatenate. Trimming first speeds up the convert step because the encoder skips the dropped footage.

What resolution will my converted MP4 be?

Whatever resolution your WTV was recorded at — the tool keeps the source resolution unless you change it. Over-the-air ATSC HD captures are typically 1920x1080i (1080i interlaced) or 1280x720p. SD digital tuner captures are usually 720x480 (NTSC) or 720x576 (PAL). To downscale (for example, 1080i source to 720p output for an iPad), use the Video resolution dropdown and pick a Preset Resolution. The tool deinterlaces 1080i automatically when downscaling.

Why is my converted MP4 still huge?

A 2-hour 1080i broadcast recording is around 12-15 GB raw, so even at 60% compression the H.264 output is 4-6 GB. Three ways to shrink further: (1) switch the codec dropdown to H.265 / HEVC for roughly another 40% reduction, (2) drop resolution to 720p if you'll watch on a phone or tablet, (3) use Specific file size and enter your target in MB — the tool will auto-tune bitrate to fit. For one-click size reduction after conversion, see Compress MP4.

Are MKV or AVI better than MP4 for this?

MP4 is the right choice for ~95% of cases — every consumer device made in the last 15 years plays it, including iPhones, Android, smart TVs, Roku, Chromecast, the PlayStation and Xbox apps, and every browser. Pick MKV if your WTV has multiple audio tracks (English + Spanish SAP, or 5.1 AC-3 you want to preserve alongside a stereo downmix) since MKV handles multi-track audio more flexibly. Pick AVI only for very old hardware that pre-dates MP4 support. For everything else, MP4 wins.

Can I batch convert a whole season of recordings at once?

Yes. Upload as many WTV files as you want — there's no quantity limit. Apply the same Quality Preset, codec, and resolution to all of them, then click Convert. Each file processes in parallel withon our servers and downloads individually or as a single ZIP. This is the practical way to migrate a Media Center library off Windows 7 / 8.1 before retiring those machines.