WTV to 7Z Converter
Processing entirely on your device — large files may take a moment.
WTV is Windows Media Center's TV recording format — tuner captures with metadata, subtitles and multiple audio tracks inside. 7Z is ideal for big archives you store or share with power users; convert to ZIP when the recipient just needs to double-click.
iLoveConverter processes everything locally on your computer, which makes it private and fast: no upload wait, no server storage, no limits. Add as many files as you like — batch conversion is built in.
How to convert WTV to 7Z
- 1
Select your files
Select your WTV file — it never leaves your device.
- 2
Convert instantly
The engine packs the file, byte for byte, into a 7Z container — no re-encoding, no quality change.
- 3
Download results
Download the finished 7Z archive.
About the WTV format
WTV is Windows Media Center's recording format — what a tuner card wrote when you scheduled a TV show. Inside sits the broadcast transport stream (MPEG-2 or H.264) plus title metadata, subtitle tracks and multiple audio languages, all wrapped in Microsoft's own container.
Media Center died with Windows 10, but the recordings live on: ffmpeg reads WTV natively, so converting to MP4 or MKV keeps the content playable on any device with the metadata you actually care about.
+Strengths
- ✓Complete tuner captures with subtitles
- ✓Multi-language audio preserved
- ✓ffmpeg decodes natively
!Limitations
- −DVR-MS (older) is a different format
- −Broadcast DRM variants exist
- −Copy-once flags block some captures
About the 7Z format
7Z is the native format of Igor Pavlov's 7-Zip (1999), built around LZMA/LZMA2 compression — for years the ratio king against ZIP and RAR — with AES-256 encryption, solid archiving (similar files compress as one stream) and open, unpatented specifications. A 7Z of the same photos or code is routinely 20–40% smaller than its ZIP.
The trade-off is platform defaults: Windows Explorer and macOS Archive Utility do not open 7Z without third-party tools (7-Zip, PeaZip, Keka). It is the format for maximizing compression on your own terms, and for encrypted archives done properly (header encryption included).
+Strengths
- ✓Top-tier compression ratio (LZMA2)
- ✓Real AES-256 encryption, optional header encryption
- ✓Open format, free tooling everywhere
!Limitations
- −No native OS support — recipients need tools
- −Solid mode makes single-file extraction costly
Why convert WTV to 7Z?
Think of it as moving your file to the container that fits the job. DVR-MS (older) is a different format 7Z works differently: Top-tier compression ratio (LZMA2) If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this WTV to 7Z converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for WTV to 7Z?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Does converting WTV to 7Z re-encode my video?
Yes. The video is decoded and re-encoded with the settings chosen by the quality slider, which is what allows the format and size to change. For an archival copy, keep higher quality; for sharing, lower quality gives a much smaller file.
Will the audio track be kept?
Yes. The audio is carried over and re-encoded to the standard audio codec of 7Z, staying in sync with the video. If your WTV file has multiple audio tracks, the first one is used.