Emiliano Frascaro
7d5d66840f
Evita patch recording ripetute che distruggevano i muxer HLS (500 ops) e fa encoderare 1080p/720p con codec e bitrate coerenti al wizard. Co-authored-by: Cursor <cursoragent@cursor.com>
32 lines
983 B
Ruby
32 lines
983 B
Ruby
module Sessions
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# Sceglie il preset più alto supportato dall'upload misurato (test rete).
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class SelectQuality
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UPLOAD_HEADROOM = 0.8
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UPLOAD_HEADROOM_1080P = 1.0
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PRESETS = [
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{ id: "1080p_30_4.5mbps", target_bitrate: 4_500_000, target_fps: 30 },
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{ id: "720p_30_4mbps", target_bitrate: 4_000_000, target_fps: 30 },
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{ id: "720p_30_2.5mbps", target_bitrate: 2_500_000, target_fps: 30 },
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{ id: "720p_30_1.5mbps", target_bitrate: 1_500_000, target_fps: 30 }
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].freeze
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def self.call(upload_mbps:)
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new(upload_mbps: upload_mbps).call
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end
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def initialize(upload_mbps:)
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@upload_mbps = upload_mbps.to_f
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end
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def call
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PRESETS.find { |preset| upload_sufficient?(preset) } || PRESETS.last
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end
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def upload_sufficient?(preset)
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headroom = preset[:id].start_with?("1080p") ? UPLOAD_HEADROOM_1080P : UPLOAD_HEADROOM
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@upload_mbps >= (preset[:target_bitrate] / 1_000_000.0 * headroom)
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end
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end
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end
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