Render different resolutions in AVMutableComposition

Question

When using AVMutableComposition to add a CATextLayer on top of a video, is there a way to render the text layer in a higher resolution than that of the video? The video is currently 1024x576, and I cannot afford to increase the bitrate or file size more than that, but adding a text layer in this render size does not look as good. Therefore, can I increase the render size and scale up the video or are there other ways to make a CATextLayer render smoother? Any effect that this would have on the output bitrate or file size is acceptable. JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

For AVPlayer Preview set contentsScale layerPrimaryTextTitle.contentsScale = UIScreen.mainScreen().scale layerSecondaryTextTitle.contentsScale = UIScreen.mainScreen().scale layerPlaceHolder.contentsScale = UIScreen.mainScreen().scale While Export layerPrimaryTextTitle.shouldRasterize = true layerPrimaryTextTitle.contentsScale = 2.0 layerPrimaryTextTitle.rasterizationScale = 2.0 shouldRasterize When true, the layer is rendered as a bitmap in its local coordinate space ("rasterized"), then the bitmap is composited into the destination (with the minificationFilter and magnificationFilter properties of the layer applied if the bitmap needs scaling). Rasterization occurs after the layer's filters and shadow effects are applied, but before the opacity modulation. As an implementation detail the rendering engine may attempt to cache and reuse the bitmap from one frame to the next. (Whether it does or not will have no affect on the rendered output.) When false the layer is composited directly into the destination whenever possible (however, certain features of the compositing model may force rasterization, e.g. adding filters). Defaults to NO. Animatable. rasterizationScale The scale at which the layer will be rasterized (when the shouldRasterize property has been set to YES) relative to the coordinate space of the layer. Defaults to one. Animatable.