MP4 to FLV converter
Turn your MP4 into a clean, ready-to-use FLV in a couple of clicks – no software to install, nothing to sign up for.
Convert MP4 to FLV
Drop your files to try StandardsPDF. This tool is available in the full workspace.
Keeps the video stream and audio track in sync
Lets you pick a quality preset to balance size and clarity
Batch several MP4 files in a single conversion
Downloads a ready-to-use FLV you can share immediately
How it works
Convert MP4 to FLV in 3 steps
Select the MP4 you want to convert
Start the conversion – most finish in seconds
Grab your new FLV, ready to use
Private by default
Files are encrypted in transit and deleted within 60 minutes.
Fast
Most jobs finish in under 10 seconds. No queueing.
No signup on free tier
5 documents per day, no credit card required.
FAQ
Frequently asked questions
How do I convert MP4 to FLV?+
Upload your MP4 file (or drag it onto the box above), wait a few seconds while StandardsPDF converts it in your browser, then download the FLV. There is nothing to install and no account required.
Is converting MP4 to FLV free?+
Yes. MP4 to FLV conversion is free on the StandardsPDF free tier – no watermark, no signup, and no credit card. A Pro tier lifts the file-size and daily limits if you need more.
Will the FLV keep the quality of my MP4?+
StandardsPDF aims for the highest fidelity the FLV format allows, so your video comes through looking as close to the original as possible. Some format-specific details may adapt where FLV works differently to MP4.
Will the audio from my MP4 stay in sync in the FLV?+
Yes – when converting MP4 to FLV the audio track is muxed back with the video so playback stays perfectly in sync.
Do I need to install anything to convert MP4 to FLV?+
No. Converting MP4 to FLV runs entirely in the browser – no desktop software, no extensions and no account for the free tier.
What is the maximum MP4 file size I can convert to FLV?+
Up to 100 MB per MP4 on the free tier and 2 GB on Pro. If your MP4 is larger, split it first or upgrade for the higher limit.
Can I convert several MP4 files to FLV at once?+
Yes – add multiple MP4 files and StandardsPDF processes them as a batch, returning a FLV for each.
Can I convert MP4 to FLV on my phone?+
Yes – the MP4 to FLV converter is fully responsive and works in Safari, Chrome and other modern browsers on iOS, Android and iPadOS.