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Need help?RM to WTV: One Discontinued Format into Another
This is a narrow conversion and it is worth being blunt about it. .rm is RealMedia, RealNetworks' streaming container from 1997, which nothing but VLC and mpv will open. .wtv is Windows Recorded TV Show, the file Windows Media Center wrote when it recorded television — and Media Center was dropped when Windows 10 shipped in 2015. Converting one to the other makes sense in exactly one situation: you are still running a Media Center machine on Windows 7 or 8.1 and you want an old RealMedia clip to appear in its Recorded TV library. For anything else, RM to MP4 is the conversion you are looking for.
How to Convert RM to WTV
- Upload Your RM File: Drag the
.rmonto the page or click "+ Add Files". Several RealMedia files can be queued and each is converted with the same settings; no RealPlayer installation is needed. - Set File Compression: File Compression opens on Quality Preset at Very High (Recommended). Switch to Specific file size for a byte budget, Constant Bitrate for a predictable rate, Variable Bitrate for better quality per megabyte, or Constant Quality / Constraint Quality to drive the H.264 quantiser directly on a CRF scale running 16 to 51.
- Adjust Video resolution and Trim: Video resolution opens on Keep original and also accepts Resolution Percentage, Preset Resolutions, Width, Height or Width x Height. Trim starts on Unchanged and offers a Time Range with a Start time and Duration.
- Convert and Download: Click Convert and save the
.wtv. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours — no sign-up, no watermark, never shared or made public.
There Are No Codec Choices on This Page
Most video targets on this site let you pick the codecs. This one does not: the Video Codec and Audio Codec groups appear, but neither offers a selectable entry, so what the encoder does is fixed. We checked what that fixed behaviour produces by converting a file and probing the result:
- Video comes out as H.264. That is what the WTV wrapper is given here, and it is the codec later Media Center builds recorded with.
- Audio comes out as Dolby Digital (AC-3). Nothing on the page selects it — it is the WTV container's own default audio codec, which the encoder falls back to when no explicit choice is made. AC-3 happens to be exactly the right answer for a Media Center file, since that is what broadcast recordings carried.
So the only levers you genuinely have on this page are compression and resolution. That is less limiting than it sounds, because the codec pair is already the one a Media Center library expects.
What a .wtv File Actually Is
| Property | Value |
|---|---|
| Full name | Windows Recorded TV Show |
| Introduced | 2008, with the Windows Media Center "TV Pack" for Windows Vista |
| Predecessor | DVR-MS (.dvr-ms), used by Windows XP Media Center Edition |
| Designed to hold | Recorded broadcast television, with video, audio, closed captions and electronic-programme-guide metadata |
| Video codecs typically inside | MPEG-2 on early recordings, H.264 on later ones |
| Audio typically inside | Dolby Digital (AC-3) |
| Native player | Windows Media Center on Vista, Windows 7 and Windows 8/8.1 |
| Browser support | None, at any version |
| Status | End of life — Media Center was removed from Windows with the release of Windows 10 in 2015 |
If Media Center Is Not Your Destination
| Target | Why you would choose it instead |
|---|---|
| RM to MP4 | Plays on phones, browsers, smart TVs and every editor — the right answer for almost everyone |
| RM to MKV | Archiving, where you want a flexible open container that can carry multiple tracks |
| RM to AVI | An old Windows application or hardware player that predates MP4 support |
| RM to MP3 | The audio was the point — a lecture, an interview, a radio capture |
| RM to WebM | Publishing the clip on a web page with royalty-free codecs |
What RealMedia Brings With It
RealMedia sources have their own characteristics, and they set the ceiling on what any conversion can achieve:
- Small frames are normal. RealVideo was encoded for connections measured in kilobits, so 320 x 240 and 352 x 288 sources are typical. Choosing a taller Preset Resolution enlarges the picture without adding detail.
- Keep original is usually right. Beyond the point above, any resize also flattens the pixel aspect ratio to square, so anamorphic sources come out the wrong shape.
- The audio was heavily compressed. RealAudio codecs such as Cook, SIPR and the 14.4 and 28.8 kbps variants were tuned for speech over slow links. Re-encoding to AC-3 preserves what is there and cannot restore what was lost.
- DRM-protected files will not convert. RealMedia files carrying RealNetworks rights management cannot be decoded by any general-purpose converter.
Frequently Asked Questions
Will the WTV file play on Windows 10 or Windows 11?
Not natively. Windows Media Center was removed when Windows 10 shipped in 2015 and has never returned, so there is no built-in application on a current Windows install that opens a .wtv file. VLC will play one because it reads the container directly, and third-party tools exist to convert WTV to something else. If the machine you are targeting runs Windows 10 or 11, converting to .wtv is almost certainly the wrong move — use RM to MP4.
Why can't I choose a codec on this page?
Because the WTV target does not expose one. The Video Codec and Audio Codec groups render, but neither has a selectable entry, so the encoder uses fixed choices: H.264 for video and, because nothing overrides the container's own preference, Dolby Digital (AC-3) for audio. We verified both by converting a file and probing the output. For a target where you can pick, RM to MKV offers a full codec list.
What audio codec do I actually end up with?
AC-3, otherwise known as Dolby Digital. There is no audio setting on this page, and no explicit codec is sent to the encoder, so it falls back to the WTV container's default — which is AC-3. We confirmed this on a converted file: the output carried an AC-3 audio stream alongside the H.264 video. For a Media Center library that is the correct outcome, since broadcast recordings used AC-3 too.
Is .wtv the same thing as .dvr-ms?
No, but they are direct relatives. DVR-MS was the recorded-TV format used by Windows XP Media Center Edition, built on ASF. WTV replaced it in 2008 with the Media Center TV Pack for Vista and continued through Windows 7 and 8.1. Windows 7 even shipped a small utility, WTVConverter.exe in the Windows\ehome folder, that converted the other way — WTV back to DVR-MS — so that applications written for the older format kept working. Both are end-of-life formats now, and neither has any presence outside the Media Center ecosystem.
Will a Media Center library actually index the file?
Sometimes, and it depends on the version and the metadata. WTV carries programme-guide fields — title, channel, broadcast time — that Media Center's Recorded TV gallery uses to organise entries, and a converted file has none of them because a RealMedia source has no such fields to supply. The file is a valid WTV and will play, but it may appear without proper details, or land in Videos rather than Recorded TV. Treat this conversion as a playback route rather than a way to fabricate a genuine recording.
Is the conversion lossless?
No. RealVideo cannot be carried into a WTV wrapper, so the picture is fully decoded and re-encoded as H.264, and the RealAudio track likewise as AC-3. That is a second generation of lossy compression on top of an already heavily compressed source. Keeping Video resolution on Keep original and the quality preset high keeps the added loss modest; the visible limit will be RealVideo's own compression, not this encode.
My RM file has combing lines. Will the WTV fix them?
No. Nothing in this pipeline de-interlaces, so an interlaced source keeps its comb pattern baked into every frame of the output. If the source came from a broadcast capture and shows combing during motion, you will see exactly the same thing afterwards. De-interlacing has to be done in a video editor before the file reaches a converter.
Can I convert only part of the recording?
Yes. Open Trim, switch it from Unchanged to the Time Range mode, and enter a Start time and a Duration. Only that section is decoded and encoded, which shortens the conversion and keeps the output small. If you would rather cut afterwards, Video Cutter accepts .rm files directly.
What happens to my file after the conversion?
It is uploaded over an encrypted connection, decoded and re-encoded on our servers, and both the upload and the finished .wtv are deleted automatically after a few hours. Files are never shared or made public, there is no sign-up and no watermark, and your original .rm is left untouched — the WTV is written as a new file for you to download.