FLV to IVF - Online Video Converter
Convert FLV to IVF online. Private, client-side - no upload required. Batch conversion, quality presets, codec control.
About FLV to IVF
Convert FLV to IVF. FLV is Adobe's Flash-video container carrying Sorenson Spark or H.264 streams. IVF is the minimal container for VP8/VP9/AV1 research streams. Audio is not supported, so only the picture carries over..
Why convert FLV to IVF?
- Smaller files with IVF lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
FLV vs IVF
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | FLV is Adobe's Flash-video container carrying Sorenson Spark or H.264 streams. | IVF is the minimal container for VP8/VP9/AV1 research streams. |
When not to convert FLV to IVF
- Skip IVF for archival masters: lossy compression discards detail, so keep the FLV original.
- Keep a master copy: repeated exports stack small losses, so archive FLV before batch IVF shares.
Limits
Starting point: FLV - FLV is Adobe's Flash-video container carrying Sorenson Spark or H.264 streams. Flash-era players are gone, so convert for current browsers. Audio is not supported, so only the picture carries over. Encode IVF (VP9) from FLV at a bitrate near the source, and confirm the audio track before converting.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.