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FLV Converter

Updated Mar 2026

Free Online FLV Converter — Convert Flash Video Files

Convert FLV (Flash Video) files to MP4, AVI, MOV, and modern formats. FLV was the standard for web video before HTML5 — convert to MP4 for universal playback.

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How to Convert FLV Files Online — Free & Instant

Convert legacy Flash Video files to modern formats since Flash Player is no longer supported.

Upload Your FLV Files

Drag and drop FLV files saved from the Flash era — old YouTube downloads, web animations, or archived content. The converter reads both FLV1 (Sorenson Spark) and VP6 encoded Flash Video.

Choose a Supported Format

Select MP4 for universal playback since no modern browser supports Flash. Choose WebM for open-source web use, or MOV for Apple device playback. The video is re-encoded with H.264 for modern compatibility.

Download Modernized Video

Download your converted video file that plays in any modern browser or media player. No Flash Player required. Audio is converted from legacy MP3/Nellymoser to AAC.

Video Format Comparison

Choose the right output format when converting FLV video files.

Format	Compression	File Size	Compatibility	Best For
MP4	H.264/H.265	Small–medium	Universal	Sharing, streaming, social media
MOV	H.264/ProRes	Medium–large	Apple, QuickTime	Mac editing, iPhone recordings
MKV	Multiple codecs	Large	PC, media players	High-quality archiving, subtitles
WebM	VP8/VP9	Small	Web browsers	Web embedding, HTML5 video
AVI	Various	Large	Windows, legacy devices	Legacy compatibility, editing

Why Convert FLV Videos?

Flash Is Dead

Adobe discontinued Flash Player in December 2020, and no modern browser supports it. FLV files are unplayable in browsers and most applications. Convert to MP4 to watch your FLV content again.

Rescue Archived Content

Old YouTube downloads, web tutorials, and Flash-era video archives saved as FLV are at risk of becoming inaccessible. Convert FLV to MP4 to preserve these videos in a modern, future-proof format.

Play on Any Device

No smartphone, tablet, or smart TV supports FLV playback. Convert FLV to MP4 for instant compatibility with iPhone, Android, Roku, Apple TV, and every modern media player.

Upload to Modern Platforms

YouTube, Vimeo, TikTok, and all social platforms reject FLV uploads. Convert FLV to MP4 before uploading to ensure your legacy video content can be shared on today's platforms.

Better Compression and Quality

FLV used early codecs (Sorenson Spark, VP6) with poor compression. Convert to MP4 with H.264 for significantly smaller files at the same or better visual quality.

No Software Required

Convert FLV video directly in your browser — no desktop apps, no plugins. Files up to 10 MB are always free, and all videos are deleted from our servers within 24 hours.

FLV Converter FAQ

Quick answers about output formats, compatibility, quality trade-offs, and the best workflows for FLV files.

What can I convert FLV files to?

You can convert FLV to MP4, MKV, MOV, WebM, AVI, and GIF, and more. FLV is the legacy Flash video format; choose the target that matches where you'll use the video — each conversion has its own dedicated tool with quality settings tuned for that pair.

How do I convert FLV files online?

Pick the FLV conversion you need above, upload your file, and click Convert. It's processed in seconds and downloads instantly — free, no watermark, and no account required. Batch upload is supported.

Is the FLV converter free?

Yes. Converting FLV files is completely free with no watermark and no sign-up. Paid plans only raise file-size limits and batch sizes for heavier workloads.

Will converting my FLV file reduce quality?

It depends on the target format. Converting FLV to a lossless format keeps every detail, while lossy targets use high-quality defaults so the result stays faithful to the original. You never lose quality that wasn't already in the source.

Are my FLV files kept private?

Yes. Uploads use an encrypted HTTPS connection, conversion runs on an isolated worker, and both your file and the result are deleted automatically within a short window — nothing is stored, shared, or used for training.

Is there a file size limit for converting FLV?

The free plan supports files up to 50 MB, which covers most FLV files. Starter raises the limit to 100 MB, Plus to 1 GB, and Pro to 5 GB for larger files.

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