Convert FLV to MP4 in Seconds

Got old FLV videos that nothing will play? Profi PDF converts them to MP4 instantly — free, private, zero installs needed.

Instant FLV to MP4

No Signup Required

Works on Any Device

1.5M users

14,382 reviews

Drop your files here

Size up to 1024 MB

How It Works

Three steps. No installs. Done in minutes.

Upload Your FLV. Drag your FLV file into Profi PDF or click to browse. Old Flash videos, downloaded clips, archived recordings — any FLV works.

Profi PDF Converts It. Our engine converts your FLV into a clean, modern MP4 in seconds. High quality, fast, no settings to fiddle with.

Download Your MP4. Grab your MP4 and play it anywhere — phone, laptop, Smart TV, or video editor. No more "format not supported" dead ends.

Your Complete Audio & Video Toolkit

Transcribe, convert, extract — everything audio & video, handled in one place.

AI Transcription

Speech to text with speaker labels, timestamps, and 95%+ accuracy.

Format Conversion

MP3, WAV, M4A, OGG, FLAC — convert any audio or video format instantly.

Video to Audio

Extract audio from MP4, YouTube, Zoom recordings, and more.

Lightning Fast

Most files processed in under three minutes. No waiting around.

No Signup

Start instantly

100% Secure

Auto-deleted

Browser-Based

No installs

People Love These Tools

Podcasters, researchers, marketers, and remote teams use our audio & video tools every day.

Feb 12

Saved years of old Flash videos

Had a hard drive full of FLV files from the early 2000s that nothing would open. Profi PDF converted them all to MP4 and I can finally watch them again. Absolute legend of a tool.

Tobias Richter

Feb 2

YouTube finally accepted my uploads

Was trying to upload old FLV recordings to YouTube and kept getting rejected. Profi PDF converted them to MP4 and they went through first try. Should've found this sooner.

Yuki Tanaka

Jan 22

Fast, clean, no watermarks

Converted a batch of old FLV clips in one go. Profi PDF was quick, the quality was solid, and there was no watermark or sign-up required. Exactly what I needed.

Nadia Osei

2526 people converted files today

@eve***

12 mins ago

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5 mins ago

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10 mins ago

Trusted and Secured by Industry Experts

Why People Pick Our Audio & Video Tools

Rescue Your Old Flash Videos

Flash is dead and FLV files are basically unplayable on modern devices. Profi PDF converts them to MP4 so those old videos aren't lost forever — just drag, drop, done.

Plays on Every Device Now

MP4 is the universal video standard — phones, browsers, Smart TVs, video editors, streaming platforms. Profi PDF gets your FLV into that format instantly.

Upload to YouTube & Social

YouTube, Instagram, TikTok — none of them accept FLV. Profi PDF converts your Flash videos to MP4 so you can upload them anywhere without format rejection.

Batch Convert Your Archive

Got a folder of old FLV files to rescue? Profi PDF lets you queue them up and convert back to back. No repetitive uploading, no wasted time.

Transcribe the Audio After

Once you have your MP4, run it through Profi PDF AI transcription to pull out subtitles, captions, or a full text transcript. One platform, full workflow.

Encrypted & Auto-Deleted

Your FLV is locked with encryption on upload and wiped from Profi PDF servers the second conversion is done. Zero data stored, zero risk.

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Frequently Asked Questions

Quick answers about our audio & video transcription and conversion tools.