Convert M2TS to FLV — Free Online Converter
Convert MPEG-2 Transport Stream (.m2ts) to Flash Video (.flv) online for free. Fast, secure video conversion with no watermarks or registration....
2M+ filer konverterade
Betrodd av tusentals användare
Saker overforing
HTTPS-krypterade uppladdningar
Integritet forst
Filer raderas automatiskt efter bearbetning
Ingen registrering
Borja konvertera direkt
Fungerar overallt
Valfri webblasare, valfri enhet
Hur man konverterar
Upload your .m2ts 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 M2TS to FLV Conversion
M2TS is the MPEG-2 Transport Stream container used by Blu-ray discs and AVCHD camcorders, carrying H.264/H.265 video with AC3/DTS audio. FLV (Flash Video) was Adobe's streaming video format, widely used for internet video delivery from 2005 to 2015 before HTML5 video took over. Converting M2TS to FLV is a legacy operation for systems still running Flash-based video infrastructure.
Why Convert M2TS to FLV?
FLV conversion from M2TS is needed only for legacy Flash-based video players and streaming servers that specifically require the FLV container. Some older CDN configurations, Flash-based media players embedded in legacy applications, and RTMP streaming workflows still use FLV. While FLV is obsolete for new projects, it remains in use in some legacy enterprise and educational systems.
Common Use Cases
- Feeding Blu-ray content to legacy RTMP streaming servers that only accept FLV input
- Converting AVCHD recordings for legacy Flash-based e-learning platforms still in operation
- Preparing M2TS content for legacy CDN configurations that cache and serve FLV files
- Making camcorder recordings compatible with old Flash-based video CMSs that only ingest FLV
- Maintaining FLV-format video libraries in systems where format migration is not yet feasible
How It Works
FFmpeg extracts H.264 video and audio from the M2TS transport stream. If the video is H.264, it can be stream-copied into the FLV container (modern FLV supports H.264). Audio is transcoded from AC3/DTS to AAC or MP3, as FLV supports both. For legacy Flash Player 7/8 compatibility, re-encoding to VP6 video may be needed, though this is extremely rare. The FLV container uses a simple tag-based structure with AMF metadata for duration and dimensions.
Quality & Performance
Stream copying H.264 from M2TS to FLV is lossless. When re-encoding is needed (downscaling, or VP6 for legacy Flash), quality depends on output settings. VP6 re-encoding from H.264 will show visible quality degradation. Audio transcoding from AC3 to AAC at 128+ kbps is perceptually transparent.
Device Compatibility
| Device | M2TS | FLV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | 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 H.264 stream copy when possible — it avoids quality loss and is much faster than re-encoding.
- 2For RTMP streaming, set keyframe intervals to 2 seconds for reliable seeking and stream switching.
- 3Only convert to FLV for legacy systems — for all new projects, use MP4 with H.264 or WebM with VP9.
- 4If your RTMP server supports it, bypass FLV entirely and ingest H.264/AAC in a standard MP4 mux.
- 5Include onMetaData tags (duration, width, height) in the FLV for proper seeking behavior in Flash players.
Related Conversions
M2TS to FLV is a legacy conversion for Flash-based infrastructure. For any modern application, convert to MP4 or WebM instead. Use FLV only when your target system has no alternative.