* craft-video: budget HEVC queued output, drop a failed VP9 superframe's repeats, serial AV1 tiles past a metadata cap
Ported from storytold/deckcraft#1778 and #1841, which landed in DeckCraft's
decoder copies after craft-video took them.
* craft-video: H.264 picture order count no longer overflows on extreme stream values
Wrapping arithmetic through the POC type 0/1/2 paths, frame_num_offset and
the MMCO5 prev_ref_lsb update. Ported from storytold/deckcraft#1913.
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Co-authored-by: jayzed80 <jzinkant@gmail.com>
* craft-video: VP9 decoder from FilmCraft (`vp9-decode` feature)
FilmCraft's crates/vp9 at 4c0d2ad7 becomes craft_video::vp9::decode. The encoder moves to
vp9/encode and is still exported from craft_video::vp9. Feature vp9 now turns on vp9-decode and
vp9-encode, so either half can be built without the other.
The decoder's tests find ffmpeg and the fixture directory through craft-media-testkit; a fixture
that cannot be generated fails under CRAFT_MEDIA_REQUIRE_ORACLES=1. craft-video is built at
opt-level 3 in the dev profile, as FilmCraft built its codecs.
* craft-video: VP9 decoder checks its picture store against a memory budget
DeckCraft's copy of the decoder refuses a frame size whose pictures (eight reference slots, the
new frame and those in flight) would not fit a byte budget. The budget type comes with it as
craft_video::budget; FilmCraft's 2^26 luma sample cap stays.
