Convert FLV Files to MP4 on Your Device
Convert FLV to MP4 in your browser for general playback and sharing. The source remains on your device throughout local processing.
Drop files here or browse (MAX 500 MB)
Max 500 MB per file
Preview (optional)
When your browser supports it, your video appears here. If preview does not load, you can still convert your file normally.
Preview is not available for this file
No worries — your video can still be converted. Set your file name and click Convert when you are ready.
Quick use cases
- Adapt legacy streaming projects to a workflow built for general playback and sharing
- Supply MP4 when an editor, player, or delivery form will not accept FLV
- Create a MP4 copy from FLV for phones, browsers, players, and upload forms
Workflow
- Add the FLV media you want to process
- Enter a clear filename for the MP4 result
- Start the MP4 conversion
- Download MP4 and test it in the destination app
Processing notes
- Conversion uses local memory and processor capacity until completion during this FLV-to-MP4 job.
- Large FLV inputs may take several minutes on older hardware.
- Review the beginning and end of MP4 after the download finishes.
Compatibility notes
- MP4 serves phones, browsers, players, and upload forms, whereas FLV commonly serves archived Flash players and publishing systems.
- For FLV-to-MP4 delivery, plan for destination-specific internal codec rules.
- After leaving FLV, the receiving app must support the streams encoded inside MP4, not only its extension.
Troubleshooting
- FLV to MP4 taking too long? Check available memory; long, high-resolution sources need substantially more.
- MP4 converted from FLV not opening? Test a compatible player and inspect the output streams.
- Check whether the receiver supports this MP4 variant: destination-specific internal codec rules.
FLV to MP4 converter FAQ
When does FLV to MP4 conversion make sense?
It is useful when FLV media created for legacy streaming projects must enter a MP4 system designed for general playback and sharing.
Where is the FLV source processed?
The browser prepares MP4 from FLV on this device instead of sending the source to a remote conversion server.
How can I approve MP4 converted from FLV?
Test the MP4 file in the receiving app and compare duration, picture, sound and timing with the FLV source.