Convert MOV to FLV — Free Online Converter
Convert QuickTime Movie (.mov) to Flash Video (.flv) online for free. Fast, secure video conversion with no watermarks or registration....
2M+ tệp đã chuyển đổi
Được hàng nghìn người dùng tin tưởng
Truyền tải an toàn
Tải lên được mã hóa HTTPS
Quyền riêng tư là ưu tiên
Tệp tự động xóa sau khi xử lý
Không cần đăng ký
Bắt đầu chuyển đổi ngay lập tức
Hoạt động mọi nơi
Mọi trình duyệt, mọi thiết bị
Cách chuyển đổi
Upload your .mov file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .flv file when it's ready.
About MOV to FLV Conversion
MOV from Apple's QuickTime ecosystem uses modern codecs like H.264 and HEVC within a sophisticated atom-based container. FLV (Flash Video) was the dominant web video format from 2005 to 2015, used by YouTube, Twitch, and millions of Flash-embedded websites. FLV wraps Sorenson Spark (H.263), VP6, or H.264 video with MP3, AAC, or Speex audio inside Adobe's proprietary container.
Why Convert MOV to FLV?
Despite Flash Player reaching end-of-life in December 2020, FLV remains relevant for legacy content management systems, streaming servers running older versions of Adobe Media Server or Wowza, and archival workflows that require FLV format. Some RTMP-based live streaming setups still accept FLV input for ingest.
Converting MOV to FLV is also needed when working with Flash-based educational platforms and interactive training systems that have not been migrated to HTML5.
Common Use Cases
- Preparing iPhone video for upload to legacy content management systems that only accept FLV
- Creating FLV content for RTMP live streaming ingest servers that require Flash Video input
- Converting QuickTime recordings for Flash-based e-learning platforms still in operation
- Archiving MOV content in FLV format for compatibility with historical video libraries
- Producing FLV files from MOV sources for integration with older Wowza or Red5 streaming servers
How It Works
FFmpeg remuxes or transcodes MOV content into the FLV container. When the source MOV contains H.264 video and AAC audio, these can be directly placed into FLV without re-encoding since FLV supports both codecs. HEVC must be transcoded to H.264 as FLV has no HEVC support. Audio must be AAC, MP3, or Speex — other codecs are transcoded. FLV uses a simple tag-based structure with script, audio, and video tags marked by timestamps.
Quality & Performance
When H.264 and AAC streams are copied from MOV to FLV, quality is preserved exactly. HEVC-to-H.264 transcoding introduces a single generation of re-encoding. FLV supports up to 1080p resolution but lacks support for HDR, 4K, and modern metadata — these features are lost during conversion.
Device Compatibility
| Device | MOV | FLV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
Recommended Settings by Platform
YouTube
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
TikTok
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Twitter/X
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Discord
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
Tips for Best Results
- 1Use stream copy mode when the MOV contains H.264 + AAC for zero quality loss and instant conversion
- 2Downscale to 720p or 1080p — FLV players and servers rarely handle higher resolutions properly
- 3If the target system requires VP6 or Sorenson Spark codec, specify it explicitly as these are the classic FLV codecs
- 4Add proper FLV metadata (duration, width, height, framerate) using the -flvflags add_keyframe_index option
- 5Test the FLV output with VLC before deploying to production streaming servers
Related Conversions
MOV to FLV conversion serves legacy streaming and CMS workflows, offering lossless transfer when the source codecs are FLV-compatible.