Convert 3GP to MKV — Free Online Converter

3GP is the mobile video container from the 3GPP consortium, limited to H.263/MPEG-4/H.264 video and AMR/AAC audio. MKV (Matroska Video), created by Steve Lhomme and a community of open-source developers, is the most flexible multimedia container in existence — it supports virtually every video codec (H.264, H.265, VP9, AV1), every audio codec (AAC, FLAC, DTS, TrueHD), multiple subtitle tracks, chapter markers, and attachments. Converting 3GP to MKV opens up maximum flexibility for editing, archival, and playback.

MKV is the preferred format for media archivists and power users because it places no restrictions on the codecs or features you can use. Converting 3GP to MKV lets you add subtitle tracks, chapter markers, multiple audio streams, and rich metadata that the 3GP container cannot support. MKV is the standard container for high-quality video on VLC, Plex, Kodi, Jellyfin, and most Linux media players. If you plan to re-encode the video later, MKV provides maximum flexibility for the intermediate file.