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M3u8 format explanation and Practical Application Analysis

What are the advantages of m3u8? After searching online, there are different opinions. My personal understanding is that it can adapt to multiple bit rates. Based on network bandwidth, the client selects a file suitable for its own bit rate for playing, ensuring the smoothness of the video stream. In iOS device and Mac, HTTP can be used for distribution. Among them, playlist is a m3u8 file extended by M3U, and the media file is a MPEG2-TS or AAC file (audio only ). M3u8 files can be used in tw

How to safely delete data and the software used

cleansing software to rewrite the hard disk with random data. Two main methods of overwriting data Gutman method It is based on Peter Gutman's paper: "Safely remove data from magnetic and solid-state storage" [2]. This approach provides the highest level of security, and data is overwritten 35 times with carefully selected data, so that the overwritten data is never recoverable again, and the disadvantage is that it takes too long. US Department of Defense

Two ordered sequences are combined into the median of a new ordered sequence, and the K decimal is obtained.

This algorithm involves an important mathematical conclusion: if a[k/2-1]The more general conclusion is: K=PA+PB, if a[pa-1]The algorithm idea is as follows:1, assume that a length is m,b length of n,m>n, and vice versa.2, Split K=PA+PB.3, if A[PA-1]4, the boundary condition of recursion is if m=0, return b[k-1], if k

Algorithm notes-----Large integers-+------Array---efficiency

1 //2 //Created by Alim on 2017/12/23.3 //4 5 6#include 7#include 8#include 9 using namespacestd;Ten One #defineM 100 A - Charsa[ +]; - Charsb[ +]; the -typedefstruct_node{ - intS[M];//Digital - intL//Digital Length +}node,*Pnode; - + A voidDzs_add (pnode pa,pnode pb,pnode result) { at intI, CC; - Pnode temp; - - if(Pa->l l) { -temp =PB; -PB =PA

JavaScript Object comparison implements code _javascript techniques

JavaScript Object ComparisonsComparison character:==,!=,===,!==,>=,= = always try to compare them straight, if the type is not the same, always try to convert.= = = More identity, no conversion on the comparison= = If it is the base type (string, number, Boolean), compare their values,var a = "123";var B = 123;Then (a==b) = true;(a===b) = false;If it is object, array, function type, compare their reference. Only if their reference is equal is true.function Point (x,y) {this.x = x;This.y = y;};

Intelligent pointer auto_ptr Parsing in C + +

Auto_ptr in C + + is a class that can be used like a pointer. Use Auto_ptr to include header file # include For example:auto_ptrExample:#include In the above code, in the test function if we forget the delete, that is, the delete pa comment out, the class A destructor can not be called. In the test function, a * PA is a local pointer variable, and the function end PA

Varnost slovenskih GSM Omre?ij III

V Torek smo pisali tudi o tem, da si.mobil v svojem omre?ju dovoli uporabo a5/0 (Nešifriranega prenosa Podatkov). Tudi njih smo poprosili za komentar.Med akanjem na odgovor so se razmere rahlo spremenite, a Najprej nekaj Uvoda.V Okviru projekta osmocombb JE bila razvita aplikacija mobile, Ki omogo?a klicanje in Pošiljanje SMS sporo?il s Pomo?jo Os MOCOMBB strojne in Programske opreme. Za izvajanje klicev Seveda potrebujemo SIM kartico, potrebno je tudi oddajati v omre?je, Kot Bomo Pokazali v Nad

virtual function Implementation Mechanism

, otherwise the compiler defaults to a static union. Underestimate This example: Example1: #includeusingnamespacestd;classA{public:voidf(){cout};classB:publicA{public:voidf(){cout};intmain(void){A a,*pa;B b; a=b;//将子类对象赋给基类对象 a.f(); pa=b;//用子类的对象的地址给基类指针初始化(符合赋值兼容规则) pa->f(); return 0;} Operation Result: AA

Conversion instances between base and derived classes in C + + tutorial _c language

The example in this article explains the transformations between the base class and the derived class in C + +. It will help to understand the object-oriented programming of C + +. Note here: The premise of this example is that the derived class inherits the base class in the form of public inheritance, with the keyword publicly. The specific analysis is as follows: The following procedure explains the example: #include Remember: the derived class object is a base class object that con

Common Unit conversion [time, distance, heat...]

) 1 lb/gallon (lb/GAL) = 119.826 kg/m 3 (kg/m3) 1 lb/(petroleum) bucket (lb/bbl) = 2.853 kg/meter 3 (kg/m3) 1 kg/meter 3 (kg/m3) = 0.001g/centimeter 3 (g/cm3) = 0.0624 lb/foot 3 (lb/FT3) Calculation of moving Viscosity 1 S (ST) = 10-4 M 2/s (m2/s) = 1 cm 2/s (cm2/s) 1 feet 2/s (ft2/S) = 9.29030 × 10-2 meters 2/s (m2/s) 1 second (CST) = 10-6 meters 2/s (m2/s) = 1mm 2/s (mm2/s) Dynamic viscosity Calculation Dynamic viscosity 1 (p) = 0.1 Pa? Seconds (

Python Learning (17th) -- Import Mechanism

aggregated into a larger package. The structure of the package facilitates class management and maintenance, and facilitates user use. For example, sqlalchemy is released to users in the form of packages. The package and module are similar. If you view the package type import sqlalchemy type (sqlalchemy), you can see that'Module'>. The path to be searched during the import package is also SYS. Path. The package import process is basically the same as that of the module, but_ Init _. pyInstead o

MATLAB calls C language

First, be familiar with the C language API included with MATLAB1, define the mexfunction function, the definition of mexfunction is unique: it can only be the following form:void mexfunction (int nlhs, Mxarray *plhs[],int nrhs, const Mxarray *prhs[])There is no change in the name and parameter type, and you can call the C + + program you just defined in the Mexfunciton function.2, Matfile matopen (const char *filename, const char mode)--open/create3, Matfile matopen (const char *filename, const

M3u8 format explanation and Practical Application Analysis

Http://blog.csdn.net/langeldep/article/details/8603045What are the advantages of m3u8? After searching online, you may have different opinions. My personal understanding is that you can adapt to multiple bit rates. Based on network bandwidth, the client selects a file suitable for the bit rate for playing, ensuring the smoothness of the video stream. In iOS device and Mac, HTTP can be used for distribution, where playlist is a standard m3u8 file extended by M3U, and the media file is a MPEG2-TS

Explanation of "HLS" m3u8 format and practical application analysis

What good is m3u8. Transfer from http://blog.csdn.net/langeldep/article/details/8603045 Online Search, we have divergent opinions, personal understanding is mainly can be multi-bitrate adaptation, according to network bandwidth, the client will choose a suitable for their own bitrate files to play, to ensure the smooth flow of video. The iOS device and Mac can be distributed in HTTP, where the playlist standard is the m3u8 file extended by M3U, the media file is mpeg2-ts or AAC file (audio on

Linux Basic Tutorial 31-tcpdump command-3

Tags: Linu routing Explanation protocol type bytes The root flag? ? After the previous study, the use of tcpdump believe should be mastered, today we come to learn about tcpdump output content of learning and understanding. Let's take the first example to illustrate the following:IP Protocol Packet Analysis[[emailprotected] ~]# tcpdump-i ens5f1-nn-x ' Port '-c 1tcpdump:verbose output suppressed, use-v or-vv for F ULL protocol decodelistening on ENS5F1, Link-type EN10MB (Ethernet), capture size 2

C language pointer variable operation detailed _c language

The pointer variable holds the address, which is essentially an integer that can perform partial operations, such as addition, subtraction, comparison, and so on, see the following code: #include Run Result: a=0x28ff44, pa=0x28ff44, PB=0X28FF30, pc=0x28ff2ba=0x28ff44, Pa=0x28ff48, pb=0x28ff38, pc=0x28ff2ca=0x28ff44, Pa=0x28ff40, Pb=0x28ff28, PC=0X2

How is the oemaddresstable memory ing table used by wince?

/ROM) Bank 0 DCD 0x00000000, 0x00000000, 0; end of table ;------------------------------------------------------------------------------ End In the past, I never knew what was going on with this table. I had a chance to call his function. C: \ wince500 \ platform \ common \ SRC \ Arm \ common \ Memory. c //------------------------------------------------------------------------------ // // File: memory. c // The code shows the relationship between the arm virtual memory and the ph

How to back up a database on server a to server B in a Linux + Oracle environment

In Windows, it is very easy to back up, transfer, and restore data. You can directly use visual operations and then use Remote Desktop operations, at the same time, you can transfer the backup file to another server through remote desktop or folder sharing. (1) Export the database to a data file using the exp command In Linux, commands are usually used, so transferring backup files is not as simple as dragging. A simple method is to use Putty to obtain other tools and connect to server a thr

The data structure breaks down a single chain of leading nodes into two single linked list __ data structure.

The single linked list of a leading node is decomposed into two single linked lists. Topic Description: /*An algorithm is designed to decompose a single linked list of a leading node into two identically structuredList B and C, where B-white node is less than 0 of the node in a, C table nodes for a node greater than 0,Requirements B and C still utilize the nodes of table A. (The Elements of Table A are all 0 elements)*/ Algorithm thought: ' Let's say the original losing streak Oh is LA, will la

Summary of const and static induction

Static and Const are the keywords in C language, they can modify variables, functions, and so on. 1.const Const and variable int x = 5; Variable const int x = 5;//in C + +, X is constant, and in the C language, X is an immutable variable Const and Pointer types int a = ten; int b =; int *PA = a; int **ppa = pa; *ppa = b; **ppa = 30; We use graphs to denote various pointing relationships. Note: The addres

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