This tool can write an MPD file for fragmented MP4 files with a sidx index at the start of the file.
c302d03 tools: Add a sidxindex tool
libavformat/Makefile | 1 +
tools/sidxindex.c | 410 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 411 insertions(+)
Upstream: git.libav.org