DVD titles play the way their navigation packs say: interleaved cells
as their own units, chapter names from the VMG, region mask, IFO stream
labels, a whole-title forced-subtitle probe, DvdPs-only stages. UHD
keeps mastering metadata and hdr_plus_flag and fixes dvcC. HD DVD
decrypts AACS per pack by each EVOBU's CPI and joins PEVOB features;
Class II MKBs are reported.
E9077-E9084 for engine remux and preflight refusals; MuxOptions loses
its send deadline. The MKV writer drops unwrap/expect and overflow
paths, tags SDR BT.2020 correctly, leaves out streams with no Matroska
CodecID and derives the Dolby Vision level. On-arrival damage with no
vouching partner is blanked, and a garbled head is damage, not a stop.
Key-source contexts carry the op token and progress; DiscSession gains
open_with, scan_with and finish on the held handle. A consumer that
closes after a cancel keeps *.partial, and an artifact lock sidecar
guards each final output. Stop rules are enforced as lint tests.
A container-neutral fit plan, then mpg:// as an H.222.0 program-stream
sink on the PES IR and as a source through the DVD sector pipeline. PES
and AU placement, start-up hold caps and 20/24-bit LPCM timing follow
the spec; a clear MPEG-1/2 PS is never read as scrambled and CSS is
judged per pack. E9074 for an output with no video track.
Waits are halt-aware on a stall timer; every CDB carries the op token;
prefetchers and pipeline joins honour Stop; flush is durable with
measured progress; the macOS shim open is cancellable. Also: CPI is
cleared on every decrypted unit, FMTS phase verification, the HD DVD
declared CPS count, AES work hoisted out of AACS hot paths, and the
last production unsafe removed.
libfreemkv::spec holds the verbatim specification quotes the code
cites, with guards tying each governed site to its quote. A test-util
feature exposes shared fixtures to downstream tests. M2TS output
derives DTS for reordered video and rounds to whole 90 kHz ticks.
Matthew Jackson