ASF to WTV Converter

Reliable ASF to WTV conversion — works in any browser

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ASF to WTV Online

Transform your ASF content into WTV directly in the browser. No desktop software, no complicated setup.

Data Safety First

Files are processed securely and deleted after conversion. Nothing lingers on servers — your privacy is fully protected.

Cloud-Powered Engine

The entire conversion runs on remote servers — your device stays fast and unburdened during the ASF to WTV process.

How to convert ASF to WTV

1

Select or drag&drop ASF video to convert it to the WTV format from your computer, iPhone or Android. Moreover, it is possible to choose it from your Google Drive or Dropbox account.

2

Now your video is uploaded and you can start the ASF to WTV conversion. If it is needed, change the output format to one of the 37 video formats supported. After that, you can add more videos for batch conversion.

3

If you want, you can customize such settings as resolution, quality, aspect ratio and others by clicking the gear icon. Apply them to all the video files if necessary and click the button "Convert" to process.

4

Once your video is converted and edited, you can download it to your Mac, PC or another device. If necessary, save the file to your Dropbox or Google Drive account.

About formats

ASF (Advanced Systems Format) is a proprietary digital media container developed by Microsoft to support streaming over networks. Introduced in 1996, it was originally called Active Streaming Format and later renamed to Advanced Streaming Format before receiving its current name. ASF serves as the underlying container for Windows Media Audio (WMA) and Windows Media Video (WMV) content, though it can accommodate data from any codec. The format was architected with network delivery in mind, incorporating features such as forward error correction, scalable bit rate support, and the ability to seek within streams without downloading the entire file. ASF files include a header object containing metadata, a data object holding the actual media content, and optional index objects that enable efficient random access. One key advantage is built-in support for digital rights management, which made ASF a popular choice for commercial content distribution during the early days of online media. The container handles multiple synchronized streams, including video, audio, script commands, and metadata markers. While ASF has been largely superseded by more modern containers in many use cases, it remains relevant in legacy Windows media ecosystems and enterprise environments that rely on Windows Media Services infrastructure.
Developer: Microsoft
Initial release: March 12, 1996
WTV (Windows Recorded TV Show) is a digital video recording format developed by Microsoft and introduced in July 2008 with the Windows Media Center TV Pack for Windows Vista. The format was designed to replace the earlier DVR-MS recording format used by Windows Media Center, offering a more capable container for recording live television broadcasts. WTV files store video in MPEG-2 or H.264 encoding alongside multiple audio tracks in AC-3 or MPEG audio format, along with closed caption data, electronic program guide metadata, and copy protection flags. The container uses an internal directory structure that supports time-shifting features, allowing Windows Media Center to record content while simultaneously enabling playback from the beginning of the recording. A rich metadata framework preserves detailed program information from the electronic program guide (EPG), including show title, episode description, genre, ratings, and original air date, making it easy to organize and browse recorded content. The format supports both standard definition and high definition recordings from digital cable, over-the-air ATSC, and ClearQAM tuner sources. WTV files are natively accessible through Windows Media Center and can be converted to the simpler DVR-MS format using built-in Windows tools. While Windows Media Center was discontinued after Windows 7 (with limited support in Windows 8), WTV files remain in personal media archives and can be processed by third-party video tools.
Developer: Microsoft
Initial release: July 16, 2008

Frequently Asked Questions

Why convert ASF to WTV?

Since ASF has limited cross-platform support and poor compatibility outside Windows, converting to WTV gives you Windows ecosystem integration across more platforms.

How do I open a WTV file?

For WTV playback, try Windows Media Center or VLC with the right codecs. All of these support the format natively or with minimal setup.

Are subtitles preserved in the WTV output?

Subtitle handling depends on the container format. Some WTV containers support embedded subtitles — check format details before converting.

How fast is the ASF to WTV conversion?

Speed varies by file size and settings. Most video files convert in under a minute, with larger files taking slightly longer.

Does the conversion work on Mac and Linux?

Convertio.tools is browser-based and works on Windows, Mac, Linux, and mobile devices — no platform restrictions at all.

Can I change the resolution during conversion?

Yes. Adjust resolution, codec, and bitrate before converting to get the WTV output quality and file size you need.