FFmpeg user manual-common ffplay commands
When compiling FFmpeg source code, if the system contains the SDL-1.2 version, ffplay compilation is generated by default, if the SDL-1.2 is not included or the version is not the SDL-1.2, cannot generate the ffplay file, so, if you want to use ffplay for streaming media playback testing, you need to install the SDL-1.2.Ffplay is usually used as a player. In fact, f
FFmpeg user manual-common ffprobe commandsIn the FFMpeg suite, there are ffmpeg and ffprobe, which are mainly used to view the information of multimedia files. The following describes common basic commands in ffprobe.5.1 ffprobe common parametersFfprobe has many common parameters. You can use ffprobe -- help to view detailed information:5.2 The following focuses on several examples:5.2.1 use show_packets to
Git User Manual: differences between HTTPS and SSH
In managing Git projects, https URLs are often directly used to clone to the local machine. Of course, some people also use SSH URLs to clone to the local machine. The main difference between the two methods is that using https url cloning is more convenient for beginners. just copy the https url and then directly clone it to the local machine using the clo
VI editor full user manual this article is intended for beginners of the unix vi editor, and the detailed command table after the article can also be used as a reference for users who are already skilled in using vi, therefore, you 'd better print this article and learn from the practice.
I. UNIX editor Overview
Editor is an important tool for using computers. In various operating systems, editors
From: http://flume.apache.org/FlumeUserGuide.html#data-flow-model
Learn flume through translation.Introduction
Apache flume is a distributed, highly reliable, and highly available system. It is mainly used to efficiently collect, aggregate, and move a large amount of log data from various data sources.
The collected data is stored in a centralized manner.
The application scenarios of Apache flume are not limited to log data aggregation. Because flume data sources can be customized, flume can
Many excerpted contentTranslated by Aman JiangBox2d v2.0.1 User Manual
Chapter 2 common modules 03rd
The common module includes settings, memory management, and vector math)3.2 Configuration
The header file b2settings. h contains:
• Type, such as int32 and float32
• Constant
• Allocation wrappers)
• Version number
• Mixed friction and mixed recovery functionsType
Box2d defines different types, such as float
https://my.oschina.net/flashsword/blog/180623FocusSeleniumdownloaderFor some JavaScript dynamically loaded Web pages, just use the HTTP emulation download tool, and cannot fetch the content of the page. There are two ways of thinking in this regard: one is to cobwebs, to analyze the logic of JS, then to reproduce it with a reptile, and the other is to have a browser built in to get the last loaded page directly. The Webmagic-selenium package integrates selenium to seleniumdownloader and can be c
).
[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,
23,24,25,26,27,28,29| ...]
18> RP (Lists:seq (1,50)).
[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,
23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,
43,44,45,46,47,48,49,50]
Ok
7. Working directoryCD (Dir)--Change Working directoryPWD ()--Get working directory[Plain]View PlainCopy
19> pwd ().
D:/tmp
Ok
20> CD ("d:/").
d:/
Ok
21> pwd ().
d:/
moving forwardLesson 4-----------------------------------------------------------1 ctrl+g Display the name of the cursor in the column and so onGG File HeaderEnd of G filen + G jumps to the specified line2 SearchSearch down/targetSearch up? targetN NextN PreviousBack to the original position Ctrl+oBack to search location Ctrl+i3 Find the corresponding brackets:%4 Finding replacementsS/old/new replaces the first one foundS/old/new/g as a forward[n1,n1]s/old/new/g from N1 to N2 line%s/old/new/g F
Nice user manual
Daniel Bonniot
Bryn Keller
Francis Barber
Fido Dido Directory
Directory
Order
1. Basic principle (philosophy)
2, Package
Main method
3. Class and interface
class declaration
Data members
Construction device
Parameter class (parametric classes)
Interface declarations
Enumeration class
4. Methods
Method declaration
method to implement
Value Allocation (dispatch)
Nam
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