Convert MP4 to SMI

Turn MP4 videos into SMI. The first subtitle track keeps the text, timing and line breaks of every cue.

Converted in an isolated sandbox on our serversDeleted after 24 hours

Drop MP4 files on the dialor turn it to pick what to do

MP4 and SMI

From

MP4 Video

The most compatible video container, usually H.264 video with AAC audio.

Extensions
.mp4, .m4v
MIME type
video/mp4
Kind
Video

To

SAMI Subtitles

SAMI subtitles, Microsoft's older caption format.

Extensions
.smi, .sami
MIME type
application/x-sami
Kind
Text and data