Convert FLV to 3GP — Free Online Converter

FLV (Flash Video) was the dominant streaming format used by YouTube, Twitch, and millions of Flash-based web players from 2005 to 2015. It typically contains Sorenson Spark (H.263) or VP6 video paired with MP3 audio. 3GP is a lightweight multimedia container designed by the 3rd Generation Partnership Project specifically for 3G mobile networks, using H.263 or MPEG-4 Part 2 video with AMR narrowband audio. Converting FLV to 3GP lets you play legacy Flash video content on older mobile phones and feature phones that only support 3GPP playback.

After Adobe ended Flash support in December 2020, FLV files became unplayable in modern browsers. 3GP was built for bandwidth-constrained mobile networks and remains supported on virtually every mobile device manufactured since 2003. Converting to 3GP dramatically reduces file size — a 50 MB FLV file often compresses to under 5 MB in 3GP — making it ideal for sharing over slow connections or storing on devices with limited memory.