Convert FLV to MOV
Convert FLV (Flash Video) files to MOV (QuickTime) directly in your browser. macOS-native editing tools refuse to open .flv — Final Cut Pro, iMovie, QuickTime Player, and Preview all need MOV with H.264 + AAC. No upload needed.
Drag 'n' drop files here, or
click to select files
.flv
Drop your files and click Convert to get MOV
//when_to_use
When to Convert FLV to MOV
- Converting FLV tutorial archives (Adobe TV / Lynda era) to MOV for trimming highlights in iMovie
- Migrating FLV Camtasia 5 / Jing screencasts to MOV for ingest into Final Cut Pro
- Preparing FLV community footage as MOV for AirDrop sharing from Mac to iPhone (which refuses .flv)
- Converting FLV Flash gameplay recordings to MOV for clip editing in DaVinci Resolve on macOS
- Re-encoding FLV Ustream / Justin.tv recovery backups to MOV before macOS Photos library import
//comparison
FLV vs MOV
| Property | FLV | MOV |
|---|---|---|
| Container origin | Adobe Flash (2003) | Apple QuickTime (1991) |
| Status | EOL (Flash dead 2020) | Actively maintained |
| Final Cut / iMovie | Rejected | Native |
| macOS Preview / QuickTime | Rejected | Native |
| Stream-copy possible? | — | Yes if H.264 + AAC source |
| Best for | Flash-era archives | macOS editing pipelines |
//how_it_works
How It Works
Drop your FLV files
Drag and drop or pick .flv files. First conversion loads FFmpeg WASM (~30MB).
FFmpeg probes FLV tags
FFmpeg WASM parses FLV's tag structure to determine codec compatibility — stream copy if H.264 + AAC, re-encode otherwise.
Remux or re-encode
Compatible streams are copied bit-for-bit into MOV atoms. Sorenson H.263 / MP3 streams are re-encoded to H.264 + AAC.
Download MOV files
MOVs play natively in QuickTime, Final Cut Pro, iMovie, Premiere, DaVinci Resolve, and macOS Preview.
// under the hood
FLV is Adobe's 2003 Flash streaming container carrying H.264 / Sorenson H.263 video and MP3 / AAC audio. MOV is Apple's atom-based QuickTime container. Our converter uses FFmpeg WASM with stream copy (-c copy) when FLV's codecs are H.264 + AAC, otherwise re-encodes to libx264 at CRF 23 and AAC-LC at 192 kbps, muxed into MOV atoms.
//faq
Frequently Asked Questions
- Can FLV stream-copy into MOV without re-encoding?
- Sometimes. If your FLV uses H.264 video and AAC audio (common after 2008), we can stream-copy both into MOV — bit-identical, very fast. Older FLVs with Sorenson Spark / H.263 video or MP3 audio require a full re-encode to H.264 + AAC since MOV's reliable codec set is narrower.
- Why convert FLV to MOV?
- macOS rejects FLV across the board — QuickTime Player, Final Cut Pro, iMovie, and Preview won't open .flv. MOV with H.264 + AAC unlocks the entire Apple editing pipeline, plus AirDrop sharing to iPhones (which refuse .flv).
- How fast is the conversion?
- Stream copy (modern FLV with H.264 + AAC) runs near disk read speed. Re-encoding older Sorenson H.263 content runs around 1-2x realtime in FFmpeg WASM since the resolutions are small (240p-360p was Flash-era standard).
- What encoder settings do you use for re-encode?
- libx264 at CRF 23 (visually lossless default) and AAC-LC at 192 kbps. Source resolution and framerate are preserved exactly.
- Are my FLV files uploaded?
- No. FFmpeg WebAssembly runs entirely in your browser tab. Old Flash recordings — often rare community content — stay local.
//related_converters
Related Converters
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