Convert MP4 to FLV

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MP4 vs FLV Format Comparison

Aspect	MP4 (Source Format)	FLV (Target Format)
Format Overview	MP4 MPEG-4 Part 14 Modern container format supporting various codecs, widely used for web and mobile video distribution. Modern	FLV Flash Video Adobe Flash container format, historically dominant for web video streaming before HTML5 adoption. Legacy
Container/Codecs	Supports H.264, H.265, AV1 video codecs with AAC, MP3 audio; flexible container structure.	Primarily uses H.264 or VP6 video codecs with MP3 or AAC audio, optimized for Flash Player streaming.
Compression	Advanced compression with modern codecs providing excellent quality-to-size ratio.	Good compression efficiency, especially with H.264 codec, optimized for streaming over limited bandwidth.
Quality	Excellent quality with support for high-resolution content up to 4K and beyond.	Good quality for web streaming, typically optimized for lower resolutions and bitrates.
File Size	Variable (1-50 MB per minute) depending on resolution, codec, and quality settings.	Moderate (2-15 MB per minute) optimized for web delivery and progressive streaming.
Compatibility	Universal support across all modern devices, browsers, and media players.	Limited to Flash Player environments, legacy web platforms, and specific streaming applications.
Streaming Support	Excellent streaming support with adaptive bitrate and modern protocols.	Designed specifically for progressive streaming and real-time messaging protocol (RTMP).
Use Cases	Modern web video distribution Mobile and tablet playback Streaming platforms Video sharing services	Legacy Flash-based applications RTMP streaming servers Older web video platforms Live streaming with Flash
Advantages	Universal compatibility Modern codec support High quality and efficiency Excellent metadata support	Optimized for streaming Small file sizes Fast seeking and buffering RTMP protocol support
Disadvantages	Larger file sizes for equivalent quality Limited RTMP streaming support	Declining browser support Requires Flash Player Limited modern codec support Security concerns with Flash
Tooling & Ecosystem	All modern video editing software Streaming platforms and CDNs Mobile apps and web players	Adobe Flash Professional RTMP streaming servers Legacy web video tools
Metadata Support	Comprehensive metadata support including chapters, subtitles, and extensive tagging options.	Basic metadata support with focus on streaming information and cue points for interactive content.

Why Convert MP4 to FLV?

Converting MP4 to FLV is useful for legacy systems and applications that still rely on Adobe Flash technology. FLV format provides optimized streaming capabilities for RTMP servers and Flash-based video players.

Our converter ensures your modern MP4 videos work with older streaming infrastructure and Flash-based applications. The conversion maintains video quality while adapting to FLV's streaming-optimized structure.

FLV files are ideal for legacy web applications, RTMP streaming setups, and environments where Flash Player is still supported. This conversion helps bridge the gap between modern video content and older streaming technologies.