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feat(tracks): download and mux stereoscopic 3D (MV-HEVC) video to MP4

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Mark 3D from REQ-VIDEO-LAYOUT, DV profile 20 codecs or an lhvC box; mux with MP4Box, decrypt with mp4decrypt, skip FFmpeg repack, sample cut and hybrid; add {3d} and env MP4Box.
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imSp4rky
2026-11-12 04:47:18 -07:00
parent a28c99b811
commit e29a523907
31 changed files with 513 additions and 67 deletions
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docs/reference/configuration/drm.md
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@@ -187,6 +187,10 @@ service tag case-insensitively and uses the `default` entry as the fallback.
unshackle decrypts HLS AES-128 ClearKey in-process and ignores this setting.
unshackle decrypts a stereoscopic 3D (MV-HEVC) track with mp4decrypt whatever this setting says.
shaka-packager refuses its Dolby Vision configuration (version 3), and before v3.5.0 it also drops
the boxes of the second view.
mp4decrypt finds a content key by the KID in the first `sinf` box of the track. When that box
has no CENC `tenc` (for example, a PIFF `sinf` before the CENC one), unshackle also gives
mp4decrypt the content key of that KID by track ID. When mp4decrypt copies a track through