Convert DivX to FLV — Free Online Converter
Convert DivX Video (.divx) to Flash Video (.flv) online for free. Fast, secure video conversion with no watermarks or registration....
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如何转换
Upload your .divx 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 DivX to FLV Conversion
FLV (Flash Video) was the backbone of web video from 2005 to 2015, powering early YouTube, Newgrounds, and millions of embedded Flash players. DivX was the dominant offline video format during the same era. Converting DivX to FLV bridges these two 2000s-era formats, useful for legacy Flash media servers, RTMP streaming setups, and archived web content that specifically requires Flash Video input.
Why Convert DivX to FLV?
Legacy enterprise systems, RTMP streaming servers (Wowza, Adobe Media Server), and certain content management systems still expect FLV files. If you have DivX video archives that need to feed into these Flash-era systems, direct conversion to FLV avoids intermediate steps. Some video hosting platforms also accept FLV uploads for server-side re-encoding.
Common Use Cases
- Feeding DivX video into legacy RTMP streaming servers for live re-streaming
- Uploading DivX content to CMS platforms that only accept FLV format
- Converting DivX training videos for playback in older Flash-based LMS systems
- Preserving DivX content in FLV for historical Flash web archives
- Creating FLV source files from DivX for legacy media encoding pipelines
How It Works
The DivX AVI container is demuxed, and the MPEG-4 Part 2 video is transcoded to either Sorenson Spark (H.263 variant for Flash 6+) or H.264 (for Flash 9+). Audio is re-encoded from MP3 to either MP3 (kept as-is in FLV) or AAC for Flash 9+. The FLV container writes audio, video, and metadata (onMetaData) tags sequentially with millisecond timestamps.
Quality & Performance
H.264 in FLV matches the quality of H.264 in any container — the codec performance is identical. Since DivX used MPEG-4 Part 2, the H.264 re-encode at the same bitrate will actually look slightly better. Sorenson Spark is lower quality and should only be used for Flash 6/7 compatibility.
Device Compatibility
| Device | DivX | 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
- 1Copy the MP3 audio stream directly to FLV to avoid unnecessary audio re-encoding
- 2Use H.264 in FLV for the best quality — only fall back to Sorenson Spark for very old Flash Player targets
- 3Write proper onMetaData tags in the FLV for correct seeking and duration display in Flash players
- 4For modern use, convert to MP4 or WebM instead — FLV is only appropriate for legacy Flash systems
Related Conversions
DivX to FLV conversion serves the niche of legacy Flash ecosystems and RTMP infrastructure, converting the era's dominant offline format into its dominant online format.