The four trailing single-byte fields (video_caps, audio_channels, video_codecs,
preferred_codec) each recomputed the name/launch offset chain from scratch —
four copies of the same three-line walk, each a chance to diverge when the next
trailing field lands. Compute name_len/launch_off/tail once and index from
there; name/launch decode from the same bindings. Wire behaviour pinned by the
existing roundtrip + back-compat tests (all green).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehler
204577c7ce