hdlc frame

talk about what is intra-frame prediction and inter-frame prediction in the encoding process before understanding I-frame B-frame P-frames 1. Intra-frame predictive coding Intra-frame encoding is used to reduce spatial redundancy

In video compression, each frame represents a delicate image. In actual compression, various algorithms are used to reduce the data capacity. IPB is the most common one.To put it simply, I frame is a key frame and belongs to intra-frame compression. It is the same as avi compression. P indicates the forward search. B i

During video compression, each frame represents a static image. In actual compression, various algorithms are used to reduce the data capacity. IPB is the most common one. Intra coded frames,Predicted pictures, AndBi-directional predictive pictures. An I frame is a key frame and is compressed within a frame. It is the

From: http://blog.csdn.net/abcjennifer/article/details/6577934 During video compression, each frame represents a static image. In actual compression, variousAlgorithmReduce the data capacity, IPB is the most common. Intra coded Frames,Predicted pictures, AndBi-directional predictive pictures. An I frame is a key frame and is compressed within a

Live555 + FFMPEG how to extract key frames (I frame, P frame, B frame)When developing a Streaming Media Player, especially on the Windows Mobile and Symbian (s60) platforms, you may need to develop your own player.The s60 platform provides the cvideoplayutility interface to implement streaming media players. However, because it is not open-source, many operations

From the simplest of an HTTP request development, according to the TCP/IP protocol, separate the data frame structure of each layer, and how they assume the network service.Protocol stackThe Internet protocol stack consists of five layers:1. The application layer is where the network application and its application layer protocols persist. The application layer of the Internet includes many protocols, common HTTP (which provides request and delivery f

1. This type of animation can create a drawable sequence that can be displayed intermittently one at a specified time.XML definition Methods1 animation-listxmlns:android= "Http://schemas.android.com/apk/res/android"2 Android:oneshot= "false">3 Itemandroid:drawable= "TU1"android:duration= "$"/>4 Itemandroid:drawable= "TU2"android:duration= "$"/>5 Itemandroid:drawable= "TU3"android:duration= "$"/>6 animation-list>2. Frames-per-frame animation is a pi

2 m leased line configured into the frame mode non-frame mode VWIC2-2MFT-T1/E1 can be configured into the frame mode of 2 m leased line, and voice 30B + D line. You cannot configure it to a non-frame mode. The configuration is as follows: card type e1 0 0 controller E1 0/1/0 framing NO-CRC4 channel-group 0 timeslots 1

Frame B has four reference modes in the MPEG-4. If both the image compression before and after the reference is recorded, the difference between the pixel value of the front image + pixel value of the back image)/2 is recorded, that is, the difference between the image and the average image. Therefore, the number of Difference values recorded is the same as that of P frames. There is only one difference, which is not increased. Because BThe

After iOS 9.0, Apple officially announced no longer or no recommendation to use Uialertview and uiactionsheet to be replaced by Uialertcontroller. It's easy to use a controller to combine the two. The following is a common method of Uialertview #import "RootViewController.h" @interface Rootviewcontroller () @end @implementation Rootviewcontroller -(void) Viewdidload { [Super Viewdidload]; Create a button click on the show Bomb frame UIButton *bu

In Plugin.xmlActionclass= "Org.eclipse.debug.internal.ui.actions.StepFrameDownActionDelegate"Disabledicon= "Icons/full/kgtp/down_frame_disable.gif"Hovericon= "Icons/full/kgtp/down_frame_disable.gif"icon= "Icons/full/kgtp/down_frame.gif"ID= "Org.eclipse.debug.internal.ui.commands.actions.StepFrameDownCommandActionDelegate"label= "%stepdownframe.label"Definitionid= "Org.eclipse.debug.ui.commands.StepFrameDown"Toolbarpath= "Threadgroup"tooltip= "Down step" > Actionclass= "Org.eclipse.debug.internal

error, said domain is empty. Next time you make a mistake, try putting it on the server and doing it. Can be directly next Wamp installation package, the page code to throw in the execution.Three, the study of1, error should be good at the error information to find out the problem lies . I did not think at the beginning of the file is not in the same domain problem, always thought it was me js get content height error, so always in this JS function to find errors, and then seriously read the er

The 7th chapter deals with serial line and Frame Relay connection failuresI. Handling serial LINE faults1. HDLC EncapsulationHigh-level Data Link Control (HDLC) is a encapsulation method for a serial link, and HDLC is the default encapsulation method for the Cisco router serial interface.The first step in dealing with

to ensure the proper protocol is used, the router must be configured with the appropriate layer 2nd encapsulation.The choice of the protocol needs to be determined based on the WAN technology and communication equipment used. The router encapsulates the packet in two-layer frame format and then transmits it to the WAN link. Although there are several different WAN packages, most have the same principle. This is because most WAN packages evolve from hi

Http://zhidao.baidu.com/question/93567501.html Http://blog.csdn.net/wzw200/archive/2009/07/23/4373056.aspx Ethernet frame format I. Development of Ethernet frame formats 1980 Dec, Intel, and Xerox have developed Ethernet I standards1982 Dec, Intel, and Xerox have developed standards for ew.net II1982 IEEE started to study the International Ethernet standard 802.3Novell 1983 can't wait to develop a dedicate

Leap Motion translation series Article http://52coding.com/leap-motion-official-doc-translation Get Frame Data Getting Frame Data The Leap Motion API provides Motion tracking data for your program using a series of snapshots called Frame Objects. Each frame of the tracing data contains the measurement position and othe

Document directory 10.4.3 Frame parameter settings 10.4.4 differences between Frame and Iframe 10.4.5 set Iframe to transparent The Frame page contains three tags: Frame, Iframe, and Frameset. Beginners can easily confuse the three. The following describes the differences between the three. 10.4.1 difference bet

Frame-Rekay ): Frame relay is a connection-oriented service. It is an industry standard pure L2 data link layer protocol. It uses HDLC encapsulation between connected devices and can process multiple virtual circuits (VC; frame Relay is more effective than X.25. Currently, it is generally considered that

I the difference between frame and IDR frame:http://blog.csdn.net/skygray/article/details/6223358The IDR frame belongs to the I frame. When the decoder receives an IDR frame, it discards all reference frame queues (implemented with the X264_reference_reset function-in the en

Why is there a limit to the minimum frame length and maximum frame length in traditional Ethernet?Ethernet (IEEE 802.3) frame format:1, Preamble code: 7 byte 0x55, a string of 1, 0 interval, for signal synchronization2, Frame starting delimiter: 1 bytes 0xd5 (10101011), indicating the beginning of a frame3. DA (Destin