FLV to AVI Converter

Convert FLV to AVI online and see exactly what timed-stream transcoding changes, what AVI still can't promise, and how to verify the result.

Choose Files or drop a video file here Preview it before choosing the output settings

Max file size 1 GB. Sign in to save your results.

By proceeding, you agree to our Terms of Use.

◈ Encrypted transfer◷ Short retention⊘ No watermark◎ Works on every device

FLV to AVI: the timed-stream transcoding route explained

Decoding FLV recovers the picture, sound, and timing streams it carries; writing AVI means re-expressing that under a different codec and container profile. Duration commonly survives untouched even while compression, channel mapping, cadence, metadata, or auxiliary streams do not. The FLV reader walks timestamped audio, video, and script-data tags, then identifies the legacy codecs and keyframe index before a modern stream is written. AVI output interleaves indexed audio and video chunks in a legacy RIFF container whose subtitle, modern metadata, and variable-frame-rate behavior is limited.

Decoded media - The legacy Flash Video container historically used for browser streaming. Encoded delivery profile - An older Microsoft media container commonly paired here with Xvid video and MP3 audio.

INPUT MODEL

FLV

FLV video container

Used for moving images, timed audio, and playback metadata.

Family: Video
MIME: video/x-flv

→

OUTPUT MODEL

AVI

AVI video container

Designed for recorded motion video with an accompanying soundtrack.

Family: Video
MIME: video/x-msvideo

FLV source facts versus AVI output requirements

FLV

What can fail when FLV video container is interpreted

Current browsers no longer provide native Flash playback, and FLV may contain older codecs with limited hardware decoding.

AVI

What AVI video container cannot safely promise

AVI has limited support for modern metadata, captions, variable frame rates, and some web players.

ENGINE

How the AVI writer handles this route

The verified AVI profile uses Xvid video and MP3 audio for compatibility with older AVI workflows.

Checking the AVI result before you trust it

BEFORE

Record the FLV evidence before conversion

Inspect codecs, dimensions, frame rate, duration, audio sync, keyframe seeking, and the complete transcoded result.

AFTER

Test the AVI file in its receiving workflow

Test seeking and audio sync in the target player, not only the opening frame.

Deciding when FLV to AVI is the right conversion

Switch to AVI only once the destination player, editor, or service has confirmed support for its exact container and codecs. If extra tracks or the original encoding must survive, FLV remains the safer choice.

What changes between the FLV model and the AVI deliverable

AVI can hold a timed animation, but FLV has no frames to give it; expect a single still frame unless more source material is supplied.
FLV and AVI use different metadata conventions, so application-specific fields should be treated as optional until verified.