Convert VOB to FLV — Free Online Converter
Convert DVD Video Object (.vob) to Flash Video (.flv) online for free. Fast, secure video conversion with no watermarks or registration....
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Upload your .vob 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 .flv file when it's ready.
About VOB to FLV Conversion
DVD VOB files use MPEG-2 video with AC3/DTS audio in the DVD program stream container. FLV (Flash Video) was Adobe's web video format, supporting H.264 or VP6 video with AAC or MP3 audio. Converting VOB to FLV makes DVD content compatible with legacy RTMP streaming servers and Flash-based platforms.
Why Convert VOB to FLV?
Legacy streaming servers (RTMP-based) and older content management systems built during the Flash era require FLV input. Converting DVD content to FLV enables uploading and streaming through these legacy platforms. Some video archival workflows also maintain FLV as a delivery format for historical consistency.
The conversion also downsizes DVD content for web delivery — MPEG-2 at DVD bitrates is far too large for the bandwidth constraints FLV was designed around.
Common Use Cases
- Uploading DVD content to legacy CMS platforms that only accept FLV format
- Preparing DVD video for RTMP streaming on older media server infrastructure
- Converting DVD training materials for Flash-based e-learning systems
- Archiving DVD content in FLV for legacy video library consistency
- Creating web-sized clips from DVD sources for legacy streaming workflows
How It Works
FFmpeg demuxes the VOB, deinterlaces MPEG-2 using yadif, and transcodes to H.264 Baseline or Main Profile with AAC audio in the FLV container. DVD resolution (720x480/576) is maintained or downscaled. AC3/DTS surround is downmixed to stereo. The FLV tag structure provides timestamps for each audio and video packet.
Quality & Performance
H.264 in FLV at DVD resolution produces excellent quality — superior to the MPEG-2 source at similar bitrates. The deinterlacing removes combing artifacts. At 1-3 Mbps H.264, quality is good for web delivery.
Device Compatibility
| Device | VOB | FLV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
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
- 1Deinterlace with yadif before encoding — all FLV players expect progressive video
- 2Use H.264 for the best quality in FLV, or VP6 only for Flash Player 6-8 compatibility
- 3Downmix DVD surround audio to stereo AAC for web-appropriate FLV audio
- 4Keep resolution at DVD native (480p) — FLV was designed for this resolution range
- 5Add FLV metadata for proper duration and seek behavior in legacy players
Related Conversions
VOB to FLV bridges DVD content into legacy streaming and web platforms, producing properly sized web video from disc-based MPEG-2 sources.