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alehel
1df8d98c85
The start of MPEG-2 encoding in craft_video::mpeg2 (feature mpeg2-encode): progressive frame pictures, closed I/P GOPs, 4:2:0 Main Profile and 4:2:2 Profile, constant quantiser or single-pass average bitrate with adaptive quantisation, half-sample motion search. The encoder shares the decoder's code tables, IDCT, dequantisation and motion compensation, so the decoder outputs exactly the encoder's reconstruction. B pictures, a VBV guarantee, interlaced coding and DVD or broadcast presets are later steps of #1133. The mpeg2 feature is split into mpeg2-decode and mpeg2-encode; mpeg2 still turns on both.