Convert WTV to WebM — Free Online Converter
Convert Windows TV (.wtv) to WebM Video (.webm) online for free. Fast, secure video conversion with no watermarks or registration....
Secure Transfer
HTTPS encrypted uploads
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Files auto-deleted after processing
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Works Everywhere
Any browser, any device
How to Convert
Upload your .wtv file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .webm file when it's ready.
About WTV to WebM Conversion
WTV (Windows TV) is the Windows Media Center DVR format, storing broadcast TV recordings with MPEG-2 or H.264 video, AC3 or AAC audio, and EPG metadata (program title, description, channel, ratings) in an NTFS-like container. Windows Media Center served as Microsoft's living room media hub from 2007 until its removal from Windows 10. WebM is Google's open, royalty-free multimedia container based on Matroska, combining VP8/VP9/AV1 video with Vorbis or Opus audio for web-optimized delivery.
WebM is the native video format of the modern web — YouTube uses VP9/AV1, and every major browser (Chrome, Firefox, Edge, Safari 16+) plays WebM natively in the HTML5 video element without plugins.
Why Convert WTV to WebM?
Converting WTV to WebM transforms TV recordings into web-native video that plays directly in browsers and integrates with modern web platforms. WebM with VP9 video and Opus audio delivers excellent quality at low bitrates, making it ideal for web hosting, self-hosted video platforms, and bandwidth-efficient streaming. This is the modern open-source alternative to MP4 for web delivery.
For users who want to share or host their Windows Media Center TV recordings on the web — personal blogs, educational sites, internal wikis — WebM is the most efficient web-native format. VP9 typically achieves 20-30% better compression than H.264 at equivalent visual quality.
Common Use Cases
- Hosting TV recording clips on personal websites using HTML5 video with native browser playback
- Uploading converted WTV content to platforms that prefer or require WebM format
- Creating bandwidth-efficient web video from Windows Media Center recordings for self-hosted media libraries
- Preparing educational TV content for web-based learning platforms and internal company wikis
- Archiving TV recordings in an open, royalty-free video format for long-term web accessibility
How It Works
FFmpeg demuxes the WTV container and re-encodes to VP9 video with Opus audio in the WebM container. VP9 encoding uses CRF mode (typical CRF 30-35 for web delivery) with multi-threaded tile encoding for reasonable processing speed. Opus audio is encoded at 128-192 kbps. Interlaced WTV sources (1080i, 480i) are deinterlaced with yadif. Two-pass encoding is available for optimal quality at a target bitrate. EPG metadata is discarded.
Quality & Performance
VP9 in WebM delivers excellent visual quality — equivalent to H.264 at 20-30% lower bitrates. For standard definition WTV recordings, VP9 at CRF 32 produces clean video at compact file sizes. HD content (720p/1080i) looks great at CRF 30-33. The main trade-off is encoding speed — VP9 encodes 3-5x slower than H.264 but produces smaller files. Opus audio at 128 kbps is transparent for broadcast content.
Device Compatibility
| Device | WTV | WebM |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| Linux | Partial | Native |
| Web Browser | No | Native |
Recommended Settings by Platform
YouTube
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
TikTok
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Twitter/X
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Discord
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
Tips for Best Results
- 1Use VP9 at CRF 30-33 for web-optimized video that balances quality and file size for streaming delivery
- 2Enable two-pass encoding for fixed-bitrate targets — this produces more consistent quality across scenes than single-pass CRF
- 3Apply yadif deinterlacing for all interlaced WTV sources since web video is exclusively progressive scan
- 4Use Opus audio at 128 kbps — it is transparent for broadcast content and more efficient than Vorbis
- 5Accept the longer encoding time as a trade-off for VP9's superior compression — the bandwidth savings pay off for hosted web content
WTV to WebM conversion produces web-native video from Windows Media Center recordings, leveraging VP9's superior compression for efficient web hosting and universal browser playback.