Convert MOV to FLV
Free online MOV to FLV converter. No signup required.
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Max file size: 100 MB
When to convert MOV to FLV
Use this conversion when your destination needs FLV and you have a MOV source. Keep the original so you can compare the result or try another supported format.
Video is re-encoded using the selected output’s defaults. Image quality, audio and metadata can change. Check playback and duration in the application where you will use it.
MOV vs FLV: Format Comparison
Side-by-side comparison of the source and target formats.
| Property | MOV (Source) | FLV (Target) |
|---|---|---|
| Extension | .mov | .flv |
| Full Name | QuickTime Video | Flash Video |
| Compression | Lossy | Lossy |
| File Size | Varies | Varies |
| Best For | Professional video editing and production on … | Legacy web video archives and content migration |
| Browser Support | Wide | Limited |
How to Convert MOV to FLV
Follow these simple steps to convert your file in seconds.
Choose a MOV file
Select or drop one file up to 100 MB. Its extension must match this converter. Availability is checked before transfer.
Convert to FLV
Video is re-encoded using the selected output’s defaults. Image quality, audio and metadata can change. Check playback and duration in the application where you will use it.
Download and check the result
Use Download after conversion completes. Open the result and check its content, quality and formatting before sharing it. Download links expire one hour after upload finishes. Uploaded and converted files are removed automatically by regular cleanup. Files may become unavailable sooner when the service restarts.
Tips for Converting MOV to FLV
Practical advice to get the best results from this conversion.
Why this conversion is worth doing
QuickTime Video has a known limitation: historically less compatible on non-Apple platforms, though support has improved. Flash Video addresses this with a key advantage: compact file sizes with acceptable streaming quality. Converting from MOV to FLV is most worthwhile when this specific trade-off matters for the way you intend to use the file.
Match the format to the actual workflow
QuickTime Video is most commonly used for professional video editing and production on apple platforms, while Flash Video is the standard for legacy web video archives and content migration. If your workflow is closer to the second pattern, converting makes sense. If you are still working in a context where MOV is the norm, converting may create unnecessary compatibility friction with collaborators or tools that expect the source format.
Watch for this limitation in the FLV output
Flash Video has its own limitation worth understanding before you commit: obsolete format since Adobe Flash Player reached end-of-life in 2020. After the conversion completes, open the FLV file and verify that this limitation does not affect your specific use case — for some workflows it is irrelevant; for others it can be a deal-breaker.
Avoid transcoding unless necessary
Every time you transcode (re-encode) a video, some quality is lost unless you use a lossless codec. If you only need to change the container format without changing the codec, use a remux (stream copy) operation instead of a full re-encode. This preserves original quality and is much faster.
Understanding MOV and FLV Formats
Learn about the source and target file formats to understand what happens during conversion.
Source Format
QuickTime Video
video/quicktimeMOV is the native video container format for Apple's QuickTime multimedia framework, supporting a wide range of codecs including H.264, H.265, ProRes, and Apple Intermediate Codec. It stores video, audio, timecode, and metadata tracks with high fidelity and is extensively used in professional video production. MOV files from Apple devices often use highly efficient HEVC encoding.
Advantages
- Excellent codec support including Apple ProRes for professional editing
- Native integration with macOS, Final Cut Pro, and Apple ecosystem
- Supports timecode tracks and professional metadata for editing workflows
Limitations
- Historically less compatible on non-Apple platforms, though support has improved
- ProRes-encoded MOV files can be extremely large
- Some older MOV files may require QuickTime for proper playback on Windows
Common Uses
- Professional video editing and production on Apple platforms
- iPhone and iPad video recording output
- Final Cut Pro and Motion project interchange
Target Format
Flash Video
video/x-flvFLV (Flash Video) is a container format that was used to deliver video content over the internet via Adobe Flash Player. It typically contains video encoded with Sorenson Spark or VP6 codecs and audio in MP3 or AAC format. FLV was once the dominant web video format but became obsolete after major browsers discontinued Flash Player support in 2020.
Advantages
- Compact file sizes with acceptable streaming quality
- Simple container structure that is quick to parse
- Large existing archive of legacy web video content
Limitations
- Obsolete format since Adobe Flash Player reached end-of-life in 2020
- No modern browser supports FLV playback without third-party tools
- Limited codec support compared to modern containers like MP4
Common Uses
- Legacy web video archives and content migration
- Converting old Flash-based video content to modern formats
- Historical video content from early streaming platforms
Frequently Asked Questions
Common questions about converting MOV to FLV.
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