我正在尝试使用GPUImage2在保存的视频上反复添加滤镜,但是当我应用第二个滤镜时,它会出现以下错误:
警告:试图将目标添加到目标的输入容量之外-> Pipeline.swift:addTarget(_:atTargetIndex :):43
和所选择的过滤器不适用。我试图施加任何新的过滤器,但没有作品之前去除过滤器和movieInput目标。
这是我的代码:
var renderView = RenderView()
var movieInput:MovieInput!
var selectedFilter:ImageProcessingOperation!
func startVideoWithFilter(filter:ImageProcessingOperation){
let bundleURL = Bundle.main.resourceURL!
let movieURL = URL(string:"fileName.mp4", relativeTo:bundleURL)!
filter.removeAllTargets()
selectedFilter.removeAllTargets()
if movieInput != nil{
movieInput.removeAllTargets()
}
do {
movieInput = try MovieInput(asset: AVAsset(url: movieURL), playAtActualSpeed: true, loop: true)
movieInput.addTarget(filter)
filter.addTarget(renderView)
movieInput.runBenchmark = true
movieInput.start()
} catch {
print("Couldn't process movie with error: \(error)")
}
}
答案 0 :(得分:0)
let vignetteFilter = Vignette()
let toonFilter = ToonFilter()
do {
movieInput = try MovieInput(asset: AVAsset(url: movieURL), playAtActualSpeed: true, loop: true)
movieInput --> vignetteFilter --> toonFilter --> renderView
movieInput.runBenchmark = true
movieInput.start()
} catch {
print("Couldn't process movie with error: \(error)")
}