Convert FLV to MP4 — rescue your Flash-era videos
FLV (Flash Video) powered online video for a decade: clip sites, screen recorders, e-learning platforms. Flash is gone, and with it the players that could read those files. Klipa's FLV to MP4 converter takes your FLV files and returns standard MP4s that open anywhere — often without re-encoding, because many FLV files already hold H.264 video inside.
It all runs in your browser, no installation. Once converted, use the compressor to lighten big archives, or the main converter for any other format.
How to convert FLV to MP4
Upload your FLV file
Drag and drop your FLV video — clips saved from the old web, screen recordings, downloads from the Flash era. They still contain perfectly good video.
The conversion runs in the cloud
Our server unpacks the Flash Video container and delivers a standard MP4 (H.264 + AAC). When the inner video is already H.264 — very common with FLV — it is copied without any quality loss.
Save your universal MP4
Your video now opens in every player, phone and editor. Trim it, compress it, or turn a moment into a GIF.
Why convert FLV to MP4?
Flash is dead, your videos aren't
Flash Player was retired in 2020 and modern players ignore FLV. MP4 brings those files back to every screen.
Often lossless
Many FLV files already contain H.264 video: we just change the container, with zero quality loss.
Nothing to install
No codec packs or abandoned desktop tools from download sites — the conversion runs on our servers.
Clean, no watermark
You get your own video back, full length, without any logo added, whatever your plan.
FLV TO MP4: USE CASES
Old web archives
Videos saved from the 2000s internet — clips, animations, interviews — become playable and shareable again in MP4.
E-learning content
Training courses and screencasts recorded in the Flash era can rejoin your modern library, ready for any LMS or player.
Screen recordings
Old capture tools often produced FLV. Convert those recordings to MP4 to re-edit or publish them today.
Related Tools
FLV to MP4 — FAQ
Is the FLV to MP4 conversion free?
Your first try is free, without signing up.
Will I lose quality?
Usually not at all: many FLV files contain H.264 video, which we copy as-is into the MP4 (a simple container change). Older codecs are re-encoded at high quality.
Why can't anything play FLV anymore?
FLV depended on Adobe Flash, which was discontinued in 2020. Modern browsers and players dropped it — the videos themselves are fine, they just need a modern container.
Is there a size or length limit?
Files can be up to 2 GB. With Pro, convert videos up to 2 hours.
Does the audio convert too?
Yes, the audio track is converted (or copied) together with the video, keeping everything in sync.
Can you convert SWF files too?
No — SWF is an interactive Flash application format, not a video. Only FLV (and standard video formats) can be converted here.
Is my file kept on your servers?
No. Files are deleted automatically after processing.
Convert your FLV to MP4 now
Fast, first try with no signup.
No credit card required
From FLV to MP4 — your videos outlive Flash
Flash may be history, but your videos don't have to be. Klipa converts FLV to universal MP4 online, watermark-free — often with zero quality loss. Follow up with the cutter, the compressor or AI transcription to modernize the whole archive.
