ConvertCove

MP4 file format

MPEG-4 video. H.264 video with AAC sound: plays on every phone, browser, TV and social network.

or drop files here · processed on your device, never uploaded

    What is a MP4 file?

    MP4 (MPEG-4 Part 14) is a container based on Apple’s QuickTime format. Most MP4 files hold H.264 video and AAC audio, a combination that plays on effectively every phone, browser, smart TV, game console and social network. Newer MP4s may use HEVC or AV1 instead.

    MP4 is the safe choice for sharing video. Its one weakness is that it is lossy: each re-encode loses a little quality, so convert from the original recording rather than from an already-compressed copy.

    Extensions.mp4, .m4v
    MIME typevideo/mp4
    Video codecsH.264, HEVC, AV1
    Audio codecsAAC, MP3, Opus
    StreamingYes (fast start)
    StandardISO/IEC 14496-14, 2003

    ConvertCove writes H.264 + AAC with the index at the front of the file, so it starts playing immediately on the web.

    Convert MP4 to…

    Every conversion listed works in the converter above: add a MP4 file and pick the target format.

    Convert to MP4 from…

    MP4, MOV, WEBM, MKV, AVI

    Detailed guides: MP4 to MP3 · MOV to MP4 · MP4 to GIF · WEBM to MP4

    Part of the video converter · all formats.