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How to create a video from images with FFmpeg?
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cat *.png | ffmpeg -f image2pipe -i - output.mp4
from wiki
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What techniques can be used to speed up C++ compilation times?
...od 2 - Sort symbols based on length
You can run the regular nm command and pipe it to your favorite script (AWK, Python, etc.) to sort the symbols based on their length. Based on our experience, this method identifies the largest trouble making candidates better than method 1.
Method 3 - Use Templig...
HTML5 Canvas Resize (Downscale) Image High Quality?
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Suggestion 1 - extend the process pipe-line
You can use step-down as I describe in the links you refer to but you appear to use them in a wrong way.
Step down is not needed to scale images to ratios above 1:2 (typically, but not limited to). It is where you n...
Does PHP have threading?
...s directly. In this case you need inter-process communication through e.g. pipes, files, sockets...
Multiprocessing
You can achieve parallel computing by creating new processes (that also contain a new thread) with php. If your threads do not need much communication or synchronization, this is yo...
REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...，这个版本必须和要#安装的数据库版本相同，安装检验无法通过,不能更改，不要改变这一项
#------------------------------------------------------------------------------
oracle.install.responseFileVersion=/oracle/install/rspfmt_dbinstall_response_schema_v11_2_0
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RESTful Authentication
... REST. Since we allow communication not only over HTTP/1.1, but also named pipes or GDI messages (locally), we tried to implement a truly RESTful authentication pattern, and not rely on HTTP specificity (like header or cookies).
Later Note: adding a signature in the URI can be seen as bad practice ...
What does .SD stand for in data.table in R
.SD looks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
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How do I achieve the theoretical maximum of 4 FLOPs per cycle?
...easier to reach peak performance on AMD (Bulldozer) as the INT and FP/SIMD pipes have separate issue ports with their own scheduler.
This is only theoretical as I have neither of these processors to test.
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How to detect a Christmas Tree? [closed]
...ost bright and big thing in the picture.
//g++ -Wall -pedantic -ansi -O2 -pipe -s -o christmas_tree christmas_tree.cpp `pkg-config --cflags --libs opencv`
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <iostream>
using namespace cv;
using n...
How to implement classic sorting algorithms in modern C++?
...vulnerable to special inputs, e.g. it has O(N^2) complexity for the "organ pipe" input 1, 2, 3, ..., N/2, ... 3, 2, 1 (because the middle is always larger than all other elements).
median-of-3 pivot selection from randomly chosen elements from the input range guards against almost sorted inputs for ...