frame

how does video player calculate single frame duration?

由 假装没事ソ 提交于 2019-12-11 17:51:56
问题 I am working on a project where I am muxing h264 raw stream into fmp4 so I can play it through MSE (Media source extension) I am bit confused about frame duration. For example, If I provide 30 frames and timescale is 1000, it plays for 1 second. If I change timescale to 800, it plays for 2 seconds for the same 30 frames If I change timescale to 500, it plays for 3 seconds for the same 30 frames My question, how does the player calculate a single frame duration from timescale? 来源： https:/

preferredContentSize not working in ios 7?

由 房东的猫 提交于 2019-12-11 14:37:53
问题 I am using modalPresentationStyle of type UIModalPresentationFormSheet to show my view.I want specific size of the view so using preferredContentSize which working in iOS 8 and showing exact how I wanted but same breaks for iOS 7 it's come as full sheet.View size changed. Where as I wanted like below image Any idea? 回答1: Please check below conditional code for iOS 8.x and iOS 7 if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"8.0")) { modalController.preferredContentSize = CGSizeMake(frameSize.x

How to set a dateRangeInput based on data?

由 被刻印的时光 ゝ 提交于 2019-12-11 13:43:56
问题 I am trying to set up a relatively basic shiny app, I have a data frame with a column of dates (DF$Date) and I want to :(1) set up the dateRangeInput to get the minimum and the maximum of DF$Date (2) the tableOutput should print only the dateRange choosen. Here's the code I'm using: UI.R library(shiny) library(shinydashboard) library(plyr) library(reshape2) #library(data.table) shinyUI(pageWithSidebar( headerPanel("CSV Viewer"), sidebarPanel( fileInput('file1', 'Choose CSV File', accept=c(

How to access multiple instances of stack frame in C

由 余生长醉 提交于 2019-12-11 11:56:39
问题 I'm attempting to write a function that is called at the end of a recursive invocation of foo() . This function will access the stack frame to display all passed arguments into foo() at the time of each invocation. I am totally confused as to how I can access the stack frame in this manner. Appreciate any insights on the matter, thank you! 来源： https://stackoverflow.com/questions/33663546/how-to-access-multiple-instances-of-stack-frame-in-c

iframe jQuery scope of reference

由 我是研究僧i 提交于 2019-12-11 10:29:32
问题 I have an iframe in my site and this iframe loads a page with jQuery. It seems that the jQuery is using the iframe dimensions as a reference instead of my actual document. For example, I used an iframe refering to this: $.jGrowl(title + " has been used"); (jGrowl is a plugin that basically loads a notice on the upper right of the page) When the notice shows, it is showing on the upper right of the iframe and not the actual document. Is there anyway to get the jQuery to refer to the actual

Jbutton acction listener

由 左心房为你撑大大i 提交于 2019-12-11 08:48:50
问题 I am trying to create a form. there is a button that when clicking the button, a photo which is specified would appear. my problem is, when I click the button, the picture pops up and if the cursor passes the form boundary, the image disappears. here is my code: import java.awt.Frame; import java.awt.Graphics; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import static java.lang

show one panel after button is clicked and other panel when second button is clicked in the same frame

由 这一生的挚爱 提交于 2019-12-11 08:22:38
问题 I am creating a Swing based application , which actually consist of two buttons as shown below - now what i want is when first button is clicked it must perform a action like showing a panel containing label, textfields , and some buttons in the same frame as shown below - and when second button is clicked it will show another panel in the same frame as shown below .. the thing is i am not understanding how to make this interface in action by providing event handler and action listener .. So

How to change dynamically frame size on mouse over

由 旧巷老猫 提交于 2019-12-11 08:12:18
问题 Can you tell me how we can change a frame size on mouse over? eg: <html> <frameset rows="70%,30%"> <frame src="page1.htm"> <frame src="page2.htm"> </frameset> </html> On mouse over it should become like this: <frameset rows="40%,60%"> And also is there any way we can do like this? <frameset rows="40%,60%"> ---> <frameset rows="70%,30%"> ---> <frameset rows="40%,60%"> (after loading webpage; (after 5 seconds) (on mouse over) for 5 seconds) 回答1: CODE: <html> <head> <script> var already=false;

Tkinter multiple operations

由 时光怂恿深爱的人放手 提交于 2019-12-11 07:58:13
问题 My question is similar to this: Python TKinter multiple operations. However, The answer provided does not help me since it points to an article with a list of possible functions to use. I want to see an actual implementation of the solution please. My question: I have two buttons on a frame. one button calls the 'execute' function as long as the toggle variable is set to true. The 2nd button sets the toggle value to False. I want the 'execute' function to keep going once i press the execute

generate a vector in R and insert it in a stacked frame

由 青春壹個敷衍的年華 提交于 2019-12-11 07:33:54
问题 I want to stack a frame but I think I do not use the right way... myframe sex = F q8 cars N U Y 1 35 31 10 2 34 23 7 3 132 109 35 4 38 36 14 5 7 5 2 , , sex = M q8 cars N U Y 1 49 22 16 2 24 13 8 3 136 52 33 4 37 31 32 5 15 10 4 f = c(myframe[1:15]) m = c(myframe[16:30]) S <- stack(data.frame(f,m)) names(S)=c("num","gender") group=c("1","1","1","2","2","2","3","3","3","4","4","4","5","5","5","6","6","6","1","1","1","2","2","2","3","3","3","4","4","4","5","5","5") num=S$num gender=S$gender
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