Video

FLV → MOV

Learn about the formats: What is MOV? What is FLV?

Convert your legacy Flash Video (FLV) files into the QuickTime (MOV) format seamlessly. This tool is essential for users who need to make older web video content compatible with modern Apple devices and professional editing software.

FLV was developed by Adobe for delivering video over the web, whereas MOV is a multimedia container developed by Apple, designed for high-quality playback and editing. During the conversion process, our tool repackages the video and audio streams from the FLV container into the MOV structure without modifying the underlying video codec unless necessary for compatibility.

Since both FLV and MOV are lossy containers, the conversion process involves re-encoding or re-wrapping, which inherently leads to minor quality loss due to generation loss. However, because the bitrate remains stable, the final file size will show only insignificant changes.

Tips

Use this conversion if you plan to import your files into Final Cut Pro or iMovie.
Ensure your source FLV file is not corrupted before starting the conversion.
Check the audio codec of your source file; some rare FLV variants may require transcoding for full MOV compatibility.

Common use cases

Migrating archived web content from old Flash-based websites to a local library.
Preparing old streaming captures for editing in Apple-native software.
Ensuring legacy video assets play correctly on macOS and iOS devices.

Why ConvertX stays free — forever

We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.

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Free tools today — and always

Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.

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Privacy-first processing

Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.

File formats: what to choose

A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.

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Video

Clips, streams, screen recordings, and movies.

Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG

Advantages

+ MP4 (H.264/H.265) plays almost everywhere
+ WebM is efficient for web embedding
+ MKV can hold multiple audio and subtitle tracks

Disadvantages

− High-resolution video needs lots of storage and bandwidth
− Re-encoding always takes time and may reduce quality
− Some codecs require licensing for commercial use

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Images

Raster and vector graphics for web, print, and photography.

Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF

Advantages

+ WebP and AVIF offer excellent compression for the web
+ PNG keeps transparency and sharp edges
+ SVG scales without quality loss

Disadvantages

− RAW and TIFF files are large and slow to share
− JPEG loses quality on every re-save
− Some formats are not supported in older browsers

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Documents

Office files, PDFs, ebooks, and plain text.

Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT

Advantages

+ PDF locks layout for printing and sharing
+ DOCX and ODT are easy to edit collaboratively
+ Plain text works on any device

Disadvantages

− PDF is hard to edit without special tools
− Complex layouts may shift after conversion
− Scanned PDFs need OCR for editable text

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Audio

Music, podcasts, voice recordings, and sound effects.

Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS

Advantages

+ FLAC and WAV preserve full quality for editing
+ MP3 and AAC are universally compatible
+ OPUS delivers great quality at low bitrates

Disadvantages

− Uncompressed WAV files are very large
− Lossy formats cannot be restored to original quality
− DRM-protected files may not convert

Frequently asked questions

No, the file size will remain largely the same, as the conversion primarily changes the container structure rather than the raw data bitrate.

Because both formats are lossy, a slight reduction in visual fidelity is mathematically unavoidable due to re-compression, though it is usually imperceptible to the human eye.

Popular conversions

MOV → MP4

MP4 → MOV

FLV → MP4

MOV → MP3 (extract audio)