Convert Advanced Systems Format (.asf) to Ogg Video (.ogv) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .asf 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 .ogv file when it's ready.
OGV (Ogg Video) uses the Theora video codec and Vorbis audio inside an OGG container — a fully open-source, royalty-free video format championed by the Xiph.Org Foundation. Converting ASF to OGV moves Windows Media content into an open format that was once the standard for HTML5 video on Firefox and Wikipedia before H.264 gained universal browser support.
OGV is required by platforms that mandate open-source, royalty-free media formats — most notably Wikimedia Commons, which only accepts OGG/OGV/WebM for uploaded media. Some Linux-based embedded systems and kiosk applications also require patent-free video formats. If you need to contribute ASF video to Wikimedia or deploy on systems with strict open-source licensing, OGV is the appropriate target.
The ASF container is demuxed, and the WMV video stream is transcoded to Theora using libtheora. WMA audio is re-encoded to Vorbis. Theora uses block-based DCT compression similar to VP3 (its predecessor). Quality is controlled via a 0-10 scale. The OGV container interleaves video and audio pages using OGG's granulepos-based timestamp mechanism.
Theora is less efficient than H.264 — at the same bitrate, H.264 produces visibly better results. Theora at 2-4 Mbps provides DVD-quality video at standard definition. For HD content, bitrates of 6-10 Mbps are recommended for acceptable quality. OGV files will generally be larger than equivalent MP4 files.
| Device | ASF | OGV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
ASF to OGV conversion is specialized for open-source ecosystems and platforms like Wikimedia Commons that require royalty-free video formats, offering a fully patent-free alternative to proprietary codecs.
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| No |
| الميزة | ASF | OGV |
|---|---|---|
| الاسم الكامل | Advanced Systems Format | Ogg Video |
| الامتداد | .asf | .ogv |
| الأفضل لـ | Streaming optimized | Open source |