How to convert ASF to VOB
To convert ASF to VOB, upload your ASF file, choose VOB as the output format and press Convert. The finished VOB file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns ASF videos into VOB files in your browser, with no software to install and no watermark. When the video and audio inside your ASF file can be placed in VOB as they are, the streams are copied without re-encoding, which is faster and keeps the original quality. Otherwise the video is re-encoded as MPEG-2 video with AC-3 audio.
Reasons to switch from ASF to VOB
- The standard DVD data format
- Plays in nearly every desktop player
- Keeps DVD-quality video
- Plays on: DVD players, VLC, Windows Media Player and most media centers
What to expect from this conversion
- Expect a larger file than the ASF original, because VOB is a less efficient format for the same quality.
- VOB output is MPEG-2 with AC-3 audio and DVD-style bitrate limits. It plays in desktop players but it is not a full DVD disc structure with menus.
- The first audio track is kept. Subtitle tracks, extra audio tracks and chapters are not included in the converted file.
ASF vs VOB
| Property | ASF | VOB |
|---|---|---|
| Full name | Advanced Systems Format | DVD Video Object |
| Released | 1999, Microsoft | 1996, DVD Forum |
| Generation | Legacy | Legacy |
| Typical file size | Medium | Large |
| Plays on | Windows Media Player, VLC and legacy Windows tools | DVD players, VLC, Windows Media Player and most media centers |
| Best for | legacy Windows streaming; old media servers | converting your own home DVDs; DVD authoring |
Steps to convert ASF to VOB
- Drop your ASF video file onto the converter, or click to choose it.
- Check that VOB is selected as the target and adjust the options if you want.
- Press Convert, then download your new VOB file when it finishes.
Tips for the best result
- Leave Fast mode on to keep the original quality whenever the streams can be copied.
- Pick a lower resolution if the file is for a phone or messaging app.
- Use Mute if you only need the picture.
Frequently asked questions
How do I convert ASF to VOB?
Upload your ASF file, make sure VOB is the selected target and press Convert. When the progress bar finishes, download the VOB file. No account or software is needed.
Is the ASF to VOB converter free?
Yes. It is free, with no watermark, no sign-up and no daily limit on how many files you convert. The site is supported by ads.
Will I lose quality when converting ASF to VOB?
Not necessarily. If the video and audio streams already fit inside VOB, they are copied without re-encoding, so quality stays identical. If the file has to be re-encoded, the High setting keeps almost all visible detail, while Small trades some detail for a smaller file.
Why is my VOB file larger than the ASF original?
Expect a larger file than the ASF original, because VOB is a less efficient format for the same quality. Choosing a lower quality or resolution reduces the size further.
Which devices can play VOB files?
VOB files play on DVD players, VLC, Windows Media Player and most media centers.
How large a file can I upload?
You can upload videos up to 500 MB. Files are deleted from the server about 30 minutes after conversion.