Stash a failed or cancelled track's segments outside the task temp dir and restore them on the next download. Also drop a pre-sized data file with its .!dev control file.
The server and the client both check a forwarded cache file before they write it, because Cacher decodes it with jsonpickle. The session-create cache write now runs off the event loop.
Click picks the subcommand before the dl callback applies the service config, so Services.resolve_command now applies remote and server first. A REST API job routes from its request only.
Relabel HEVC HDR10 tracks whose first fragment carries ST 2094-40 SEI as HDR10P, for dl, the REST API and remote sessions. Config key hdr10plus_probe (default true).
Builds per-scene L1 in unshackle (PQ mean, letterbox-aware) with a generate_dv_mode config (v29/v40/legacy); a failed hybrid no longer exits 0 with no video.
--proxy now overrides HTTP(S)_PROXY and the Windows system proxy while keeping the env CA bundle. Core fallback sessions use the run's proxy, and a warn-only audit hook names service code that sends a request or opens a raw socket outside the proxy; a session with proxy_exempt = True opts out.
The server CDM stub names only the manifest's KIDs; sibling keys stay content keys. API and HTTP vaults retry a 429, and a vault that is down or still rate limited costs one timeout per run.
A tag with a region (en-US, es-419) matches only that variant and reports a miss instead of taking another region. A bare tag takes the variant it means (pt -> pt-BR, es -> es-ES) and falls back to any variant only when that one is missing. `orig` prefers the title's own tag, `-sl orig` resolves, forced and SDH subtitles are picked from their own pools, and the track name no longer strips the region from the cached language.
BREAKING CHANGE: -l es-419 no longer selects es-ES, and language_priority, language_tags and muxing.default_language treat a regional tag as exact.
Test servers shut down without the 0.5s poll wait, unit tests refuse non-loopback lookups, and three load-sensitive tests are steadied. Pushes to dev test Python 3.11 only; the docs job builds with uv.
The remote-dl client sends exact_lang in dl_params, and REST download jobs set it in the service ctx, so a service can skip the manifests of close-match languages.
The first of the widevine / playready config keys in a cdm entry sets which device loads first and which DRM system licenses a track that offers the two. An entry that lists playready first changes from Widevine to PlayReady.
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