End-to-end VOD packaging pipeline for the sheathe packager.
[package] takes one or more input media files (MP4, MPEG-TS, WebM/Matroska,
raw elementary streams, WebVTT/TTML) and writes CMAF init + media segments plus
DASH and/or HLS manifests into an output directory — the library form of the
sheathe package CLI command. Multiple inputs form an ABR ladder (each input's
track(s) become separate renditions sharing one manifest).
The sheathe-cli package command is a thin wrapper over [package].