I need to create a Fragment-MP4 with "sidx" box to create a streamable and seekable video to use it by MediaSource API It is very easy to do it with Bento4 by using "--index" option, but I want to do it with ffmpeg because it has good other options like codec and bitrate and keyframes, It will be hard if I used both (ffmpeg, bento4) to create fmp4 by PHP exec
You have to set -movflags +dash at a minimum. For a sidx per moof box, that's it. For a global sidx, in addition you have to set global_sidx as well, so -movflags +dash+global_sidx.