frame-rate

问题 m a beginner programmer and im creating a project which allows me to walk around rooms via a first person camera so far i have the buildings drawn etc but now im stuck and don't know how to make a first person camera to allow me to walk around could anyone point me towards a camera class i could use or some useful code? thanks in advance below is the code for one of my buildings but not my full project, its rotating so i could see what i was drawing. i want to be able to move forwards and

问题 Hey I'm a first year student and I'd like to try making a simple 2D game on my website using html, javascript, css and php. I'm still writing out how I am going to do it but I get stuck on how frames per second are made, do they magically appear in my game or do I need to program them myself. I've wrote a simple version of the Pokemon franchise before, where you could walk around, randomly encounter monsters and they just had varying levels and properties. However the character walked 16px

问题 I'm writing an application for a touch table using WPF and C#. (And, I'm not terribly familiar with WPF. At all.) We suspect we're not getting the framerate we're "requesting" from the API so I'm trying to write my own FPS calculator. I'm aware of the math to calculate it based on the internal clock, I just don't know how to access a timer within the Windows/WPF API. What library/commands do I need to get access to a timer? 回答1: I think you're looking for the StopWatch. Just initialize it and

问题 I am developing mobile web app using ionic sidemenu, but it is not as smooth as it should be. When I open sidemenu using slide left/right, I am getting less than 30 FPS as shown in figure. How can I improve the performance? Reaching 60 FPS would be great! 回答1: AppGyver's Steroids tooling also provides you with access to Crosswalk on Android. You can run it in your Ionic project directly without modifying any files. Also, Supersonic's sidemenu/drawer is fully native, so if you're up for

问题 I am developing mobile web app using ionic sidemenu, but it is not as smooth as it should be. When I open sidemenu using slide left/right, I am getting less than 30 FPS as shown in figure. How can I improve the performance? Reaching 60 FPS would be great! 回答1: AppGyver's Steroids tooling also provides you with access to Crosswalk on Android. You can run it in your Ionic project directly without modifying any files. Also, Supersonic's sidemenu/drawer is fully native, so if you're up for

问题 I am playing video using the html video tag. While playing video I want the current frame of the video not "currentTime" using jquery or javascript. I am able to get the current frame by doing the calculation of the fps of video and currentTime, but it is not giving the exact frame number. Any ideas how I can fix this? 回答1: Please check out below demo. Only one thing is you have to assign a frameRate of video. External Js will manage all thing and you can get Frame number easily. var

问题 I am using ffmpeg to convert high quality videos to gif, most of the videos are 60fps and over 720p , but when I use the code below, to convert the video to gif, I get very low fps for the gif output, #!/usr/bin/env palette=/tmp/pallete.png filter="fps=50,scale=480:-1:flags=lanczos" ffmpeg -y -i test.mov -vf $filter,palettegen=stats_mode=diff $palette ffmpeg -y -i test.mov -i $palette -lavfi "$filter [x]; [x][1:v] paletteuse" test.gif another issue I have noted is - as the width increases e.g

问题 I want to reduce the number of frames acquired per second in a webcam, this is the code that I'm using #!/usr/bin/env python import cv2 cap = cv2.VideoCapture(0) cap.set(cv2.CAP_PROP_FPS, 10) fps = int(cap.get(5)) print("fps:", fps) while(cap.isOpened()): ret,frame = cap.read() if not ret: break cv2.imshow('frame', frame) k = cv2.waitKey(1) if k == 27: break But it doesn't take effect, I still have 30 fps by default instead of 10 set up by cap.set(cv2.CAP_PROP_FPS, 10) . I want to reduce the

问题 My question is about Chrome DevTools, specifically I have question about Timeline tab. So as I've read numerous times, my browser has to have 60fps speed rendering my pixels. Sometimes though it has some heavy JS executing and preventing 60fps happening. Also if I have some CSS and JS which cause recalculating and repainting of the DOM tree(part or full tree) it may also take more than ~16ms for one frame. Here is the picture of such a long frame from our app: Ok, here I can clearly see, that

问题 At first I used NSTimer and ran into the problem of the frame rate being stuck at 40 frames per second. I've read about using CADisplayLink to fix the problem. It seemed to work for a while, but recently, the app starts at 60, then after a little while (about 5 - 20 seconds in) the app starts to run at 40 - 41 fps and gets stuck there. And I'm culling so that there's less draws when objects are out of view, but yet it stays stuck there. A unusual way that does seem to remedy the problem for a