Decoder to Mux

Decoder to Mux is a domain-focused analysis tool for media engineering. It accepts a media container or raw stream, decodes its elementary streams, and exposes a structured view of the payloads without performing encoding. The primary users are engineers and developers who validate compatibility between decoders and muxers, troubleshoot transmux pipelines, and generate actionable metadata for downstream tools. The tool emphasizes correctness, traceability, and interoperability, making it easier to compare expected vs actual packet structures, timing, and size distributions across formats such as MPEG-TS, MP4, and WebM.
Conceptually, the tool performs parsing of the chosen container, extracts track information, decodes packets to elementary streams, computes timestamps and durations, and builds a manifest-like representation that can feed a muxer. It supports required decoding of core codecs and optional advanced analysis such as PTS/DTS drift, clock reference checks, and segment-level statistics. Outputs include a decoded_structure, timing_metrics, payload_size_bins, and a mux_manifest that documents the steps needed to repackage the streams. The emphasis is on non-destructive inspection and reproducible results.
What sets this tool apart is its focused data model, explicit error handling, and export paths for automation. It does not perform final encoding, but provides structured evidence for muxing decisions, supports base64-encoded inputs, and yields machine-readable JSON and plain manifests. Use cases include pre-mux validation before a live broadcast, offline pipeline debugging, and integration into CI pipelines where a developer-friendly interface supplies deterministic results.