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How can I extract a good quality JPEG image from a video file with ffmpeg?
...lours, though others have many more). This was using version 4.2.1 x64 on Windows. Also written here is: "If I pull png's from an mp4, with this [ffmpeg] command, I get high quality png's that are of identical quality to the original video." What version of ffmpeg are you using that is outputting...
Message Queue vs Message Bus — what are the differences?
... this context, the usage is indeed different. If you think of the classic Windows message pump, this indeed is more the pull model you describe, but it is really more intra-app than inter-app or inter-box.
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HTML - how can I show tooltip ONLY when ellipsis is activated
...cated you cannot update the presence of a tooltip. Attaching your code to window resize again would have a performance issue as every item checks its size. By using event delegation "$(document).on('mouseenter', '.mightOverflow', ..." and delaying the check till you mouseover the element, you can ...
Yes/No message box using QMessageBox
...to create a Message Box then add buttons :
QMessageBox msgBox;
msgBox.setWindowTitle("title");
msgBox.setText("Question");
msgBox.setStandardButtons(QMessageBox::Yes);
msgBox.addButton(QMessageBox::No);
msgBox.setDefaultButton(QMessageBox::No);
if(msgBox.exec() == QMessageBox::Yes){
// do someth...
What does “zend_mm_heap corrupted” mean
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And also it's works on windows: set USE_ZEND_ALLOC=0
– Nabi K.A.Z.
May 27 '19 at 5:11
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Getting the folder name from a path
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DirectoryInfo does the job to strip directory name
string my_path = @"C:\Windows\System32";
DirectoryInfo dir_info = new DirectoryInfo(my_path);
string directory = dir_info.Name; // System32
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Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...ge is the greater portability as mentioned in the docs:
Note: Although Windows supports chmod(), you can only set the file’s read-only flag with it (via the stat.S_IWRITE and stat.S_IREAD constants or a corresponding integer value). All other bits are ignored.
chmod +x is demonstrated at: Ho...
Failed to allocate memory: 8
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Add in Run Configurations window the parameter -memory 512 from this link fixed it for me
– GatesReign
Dec 3 '12 at 15:14
add ...
What does string::npos mean in this code?
...td::string::npos; and get pos:4294967295 npos: 4294967295 when I run it in Windows but on Mac I get pos:4294967295 npos: 18446744073709551615. That doesn't seem right...well any way I suggest comparing to -1 instead of std::string::npos
– user1135469
Apr 10 '13...
How can I prevent the backspace key from navigating back?
...hich == 8) {
backspaceIsPressed = false
}
})
$(window).on('beforeunload', function(){
if (backspaceIsPressed) {
backspaceIsPressed = false
return "Are you sure you want to leave this page?"
}
})
} // confirmBackspaceNavigations
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