提供音频数据作为ffmpeg的缓冲区

Question

我想将缓冲区而不是文件中存储的音频数据提供给ffmpeg。我不想为音频文件提供文件路径。 有可能吗？

Answer 1

是。只需将FFmpeg作为子进程执行，并通过STDIO将数据传输给它。使用let sceneBody = SKPhysicsBody(edgeLoopFromRect: self.frame) sceneBody.friction = 0 self.physicsBody = sceneBody var ball = SKShapeNode(circleOfRadius: 9) ball.fillColor = SKColor.whiteColor() ball.position = view.center ball.physicsBody = SKPhysicsBody(circleOfRadius: 9) ball.physicsBody?.affectedByGravity = true ball.physicsBody?.restitution = 1 ball.physicsBody?.linearDamping = 0 ball.zPosition = 3 self.addChild(ball) circulo = SKSpriteNode(imageNamed: "circuloFondo2") //Circle that I want the ball bounce within circulo.size = CGSize(width:view.frame.size.width - padding , height: view.frame.size.width - padding) circulo.color = UIColor(red: 0.15, green: 0.15, blue: 0.15, alpha: 1) circulo.colorBlendFactor = 1 circulo.alpha = 0.35 circulo.position = view.center self.addChild(circulo) circulo.zPosition = 1 作为输入文件，并确保为音频数据设置正确的格式。 https://trac.ffmpeg.org/wiki/audio%20types