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CAMPHOR- LT を支える
配信環境
@KM_CONNER
自己紹介
• 京大院 M1
• 普段は C#, C++, Go, TypeScript…
• 水泳とスコッチウイスキーが好き
• Twitter: @km_conner
• GitHub: KMConner
CAMPHOR- の機材事情
ライブ配信専用の機材やそれに関する
ノウハウはない
ある程度のスペックのPC は
1人1台持ってる
CAMPHOR- DAY (3月)での配信環境
キーボード
カメラ (iPhone 11 Pro)
マイク
MacBook Pro
スライド
発表者ツール
CAMPHOR- DAY (3月)での配信環境
1台のPCで
• スライド投影 + キャプチャ
• 配信のオペレーション (OBS)
問題点
• 同時に操作できるのは1人だけ (カーソルの取り合い)
• 複雑なオペレーション
CAMPHOR- DAY (3月)での配信環境
配信映像 オペレータ 発表者
普 通 の 登壇
Transition シーンに変更
素材を次の登壇者用のものに差し替える
最初の登壇者が画面の前で準備するように指示
準備が出来たことを伝える
Transition シーンを終了
Talk openningシーンに変更
Talk openingシーンが終了
自動でTalk シーンに切り替え
シングルが鳴り止んだ後に話し始める
発表が終わったことを伝える
Talk シーンを終了
CAMPHOR- LT での
配信方法
CAMPHOR- DAY との違い
• 前回に加えて Zoom によるオンライン登壇
• 1台では限界
• PC を2台使用してその間はNDIで通信する
NDIとは?
IP ネットワーク上で映像を送受信
• リアルタイム&低遅延
• そこそこ CPU とネットワーク帯域を食う
(有線 LAN あった方が良さそう)
OBS のプラグイン
• OBS の映像を送出
• Input Source として受信した映像を表示
CAMPHOR- LT の配信環境
2台のPC
• オフライン登壇のスライド投影
• Zoom クライアント + 配信オペレーション
スライド + 音声 + カメラ
NDI
BGM & ロゴの追加
切り替え
まとめ
NDIの利用により
• 単純なオペレーションが可能になった
1. シーン切り替え
2. スライド切り替え
3. シーン切り替え
• 配線がすっきりした

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CAMPHOR- LT を支える配信環境