FLV to IVF - Online Video Converter

Convert FLV to IVF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert FLV to IVF

[+] Drop FLV video here or click to select FLV

Output format

IVF (VP9)

No transcoding (remux only)[i]

Mode[i]

Simple Advanced

Quality[i]

Resolution[i]

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.

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FAQ

How do I convert FLV to IVF?

Drop your FLV file onto this page, choose quality and codec settings, then click Convert. The result downloads as IVF instantly. All processing runs in your browser.

What codec is used for IVF?

The default codec for IVF is VP9. You can change the video and audio codec in Advanced mode.

How do you store my files?

We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.