MOV to FLV Converter

Turn a MOV into FLV for legacy Flash players and older systems that still expect it. Free, in your browser, no signup.

Select MOV file →

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Click or drag and drop to upload files

We support most file types including: MP4, MOV, WEBM, AVI, MP3, WAV, PNG, JPEG, GIF, MKV, PDF, FLAC, TIFF!

EchoWave is used by creators, marketers, educators, and businesses to convert and edit media online.

Updated July 2026

FLV is Flash Video, the container that carried web video before browsers dropped Flash support in 2020. Converting a MOV to FLV is almost always about feeding an older system that still expects the format, such as a legacy CMS, learning platform, or Flash-based player. EchoWave does it in your browser with no signup, though for anything modern, MP4 is the format to reach for.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert MOV to FLV

1
Upload your MOV
Drag your MOV onto the converter or pick it from your device. Nothing to install.
2
Choose FLV and convert
Select FLV as the output and start. Free, with no sign-up and no watermark.
3
Download your FLV
Save the finished FLV, or open it in the editor to trim, crop, or resize it first.

Try it

Estimate your FLV

Pick a video bitrate and a length to see the FLV file size before you convert.

Video bitrate

Length5 min

1 min30 min

Estimated FLV size183MBSharp 1080p

An estimate. Real size varies with resolution, frame rate, and how much the picture moves.

The formats

MOV vs FLV

MOV

QuickTime File Format

Apple QuickTime video, common on iPhone and Mac

Type: Video container (QuickTime)
Holds: H.264 or HEVC video with AAC audio
Typical size: Large, often bigger than MP4
Plays on: iPhone, Mac, QuickTime, most modern players

Best for:Recording and editing on Apple devices

FLV

Flash Video

Legacy Flash video from the pre-HTML5 web

Type: Flash video container
Holds: H.263, VP6, or H.264 video with MP3 or AAC audio
Typical size: Small, made for streaming
Plays on: VLC, since browsers dropped Flash in 2020

Best for:Recovering old Flash web video

Will it lose quality?

When the codecs already match FLV, the converter can change the container without re-encoding, so the picture stays identical.
When the video has to be re-encoded for FLV, a high bitrate keeps it visually close to the MOV.
Converting cannot add detail the MOV never had. The output is at best as good as the source.

Use cases

What people use it for

Play anywhereMake a clip your device supports

Video editorsGet footage your software accepts

Web videoUse a format browsers play

CourseworkHand in a standard video file

SharingSend a clip people can open

Troubleshooting

If something looks off

The FLV will not play

Some players are picky about codecs. Try it in VLC, which opens almost anything, or convert again and let the converter re-encode the video.

The file got larger

A format change can shift the size, and re-encoding at a high bitrate adds overhead. Lower the bitrate or trim the clip for a smaller file.

Audio and video drift out of sync

Re-download the source and convert again. If a long recording drifts, splitting it into shorter pieces usually fixes the sync.

FAQ

MOV to FLV questions

How do I convert a MOV to FLV?

Upload your MOV, choose FLV as the output, and start. When it finishes, download the FLV or open it in the editor to trim or adjust it first.

Why would I still need FLV?

FLV mainly survives inside older systems: legacy content platforms, internal learning tools, and Flash-based players that were built before HTML5 video. If one of those refuses your MOV and asks for FLV, converting keeps the old workflow running.

Does FLV still play in browsers?

No. Browsers removed Flash support at the end of 2020, so FLV no longer plays on the open web. VLC and a few older players still open it, which is why FLV is now a compatibility format rather than a sharing one.

Should I use FLV or MP4?

For almost anything today, choose MP4. It is smaller, plays in every browser and on every phone, and has replaced FLV for web video. Pick FLV only when a specific old system insists on it.

Will converting MOV to FLV lose quality?

Converting to FLV re-encodes the video, so a high bitrate keeps the result close to the source. The output can be at best as good as the original MOV, and a conversion cannot add detail the source never had.

Is the MOV to FLV converter free?

Yes. EchoWave converts MOV to FLV with no signup, no file-count limit, no trial, and no watermark. Upload your video, convert it, and download the FLV from your browser.

Does the MOV to FLV converter work on Mac, Windows, iPhone, and Android?

Yes. Because the MOV to FLV conversion happens through your browser, you can start it from a Mac or Windows PC or even from a QuickTime clip in your iPhone or Android camera roll, with nothing to install. Just remember that the FLV you get back is for an old Flash system, so play it in VLC rather than expecting it to open on the phone itself.

How do I open an FLV file to check it?

Use VLC, which still plays FLV reliably on Mac and Windows. If you need the clip to play on the modern web or a phone, convert to MP4 instead.