h264 converter

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The RTP package for the H264 of RTSP learning

I. H264 Basic Concepts 1.1, NAL, slice and frame introduction and interrelated NAL refers to the network extraction layer, which put some network-related information. Slice is the meaning of the film, 264 in the image into a frame (frame) or two fields (field), and the frame can be divided into one or several slices (slilce), the slices are composed of macro blocks (MB). A macro block is a basic unit of encoding processing. A frame can be divided into

asp.net2.0 Server control type converter

A type converter is a more important element in implementing a custom server control property. In this paper, the basic concepts and implementation methods of type converters are introduced. 1. type converter Basic Concepts A type converter is an accessible feature implementation of a custom server control. It is primarily used to perform bidirectional conversi

Struts 2 reading notes -- custom type converter for struts 2

Most of the time, we use struts 2The built-in type converter can meet most of the type conversion requirements. However, in some special cases, if you want to convert a string into a composite object, you need to use a custom type converter. To implement a custom type converter, you must follow these two steps: 1, Write your own type

PHP + FFMPEG Enables automatic Transcoding of videos into H264 standard Mp4 files

Recently, I am working on an online tutorial Network project. I need to upload videos in any format to automatically play h264 standard videos using html5. Finally, PHP + FFMPEG is used for implementation. Here we will share our detailed solutions with you! Recently, I am working on an online tutorial Network project. I need to upload videos in any format to automatically play h264 standard videos using htm

The principle and application of exponential Grumb entropy coding algorithm used by H264

exponential GRUMB algorithm decoding process:When parsing the K-Order index Columbus Code, the first non-0-bit leadingzerobits is first searched from the current position of the bitstream, and then the value of Code_num is calculated according to the formula:Code_num = 2^ (leadingzerobits + k)-2^k + values;Where values are the first non-0-bit followed by (leadingzerobits + K) bits.Example (1-order exponential GRUMB algorithm decoding 001011): leadingzerobits=2;values=011b=3;code_num=2^3-2^1+3=9

HiSilicon H264 Decoding Library Hi_h264dec_w.dll watermark problem

Previous HiSilicon H264 decoding library ,It realizes the simple decoding of H264 frame, but after replacing the camera, there is a watermark problem in the center of decoding video, such asFind the network, the basic related to this article, has not given a good solution.http://bbs.csdn.net/topics/390325547which warrior knows: HiSilicon H. A PC decoding library Hi_h264dec_w.dll, video decoding, how to remo

Summary of the TS stream that can be played by iPad packaged with h264 and aac

It took me nearly three weeks to implement HTTP live streaming on the crtmpserver to package h264 and aac into ts streams and play them on the iPad through HTML5, because there is no ready-to-useCodeFor reference, the packaging code is all handwritten. For the packaging format, refer to ISO/ice 18318-1.pdf. During this period, I encountered many problems and took a lot of detours. The standard-compliant ts may not be able to play on the iPad, but the

H264 SVC Scalable Video Encoding

H264 SVC is a technology that divides video streams into multiple layers of resolution, quality, and frame rate. It is an extension of H.264 Video Coding/decoding standard adopted by most video conferencing Devices today. Video conferencing equipment uses SVC technology to send and receive multi-layer video streams consisting of a small base layer and multiple other optional layers that can improve resolution, frame rate, and quality. This layered met

H264 parameter setting based on V4L2 MFC video codec

Last Post hardware video encoding, after the default parameters are set, encode 1000 frames 640x480 H264 file size is about 180m, very large, you must set the parametersAfter the test discovery is Enablembratecontrol, the encoded data begins to shrink significantly:Here the first 54 control parameters are all initialized-1, in these 54 parameters, including h264,h263 and MPEG video format settings, for each

FFmpeg decode H264 Naked stream and convert it into OpenCV mat__ffmpeg

Thanks to Dr. Rai for the Chinese video codec in the pay, http://blog.csdn.net/leixiaohua1020 Recently to do some video streaming things, to parse H264 bare stream and get OPENCV format of mat data to the algorithm engineers to run algorithms. Related resources have been difficult to find, often too old to make the API version of the replacement, no way to let new people or laymen [such as me] Quick validation of the code is feasible. In the referenc

Type converter, case-multi-format conversion for the struts of the SSH framework

Type converters for struts (in this case a date type converter) One, type converter1, struts in the data submitted by the JSP (all STRINGL type), struts will be automatically converted to the corresponding type of properties in the action, (this is better than servlet,servlet need to manually convert).2. For basic data types and date types are automatically converted.3. The date type only supports YYYY-MM-DD format. In other formats, you need to custo

Linux system Rtmpdump (LIBRTMP) publishes H264 data via rtmp __linux

About the use of rtmpdump, many of the applications in the Windows platform, Thor has to do a series of analysis, but Raytheon is mainly based on the Windows platform. The main task of this article is to migrate the project from the simplest librtmp example: Release H.264 (H.264 through Rtmp) to the Linux system, while fixing some problems and adding a description. Before using the project, there should be a rtmp server and a better understanding of the H264

H264 SPS PPS Detailed

1. Learning Route Step1, preliminary understanding of H264, understanding H264 Data frame Classification and recognition Step2, H264 syntax related algorithm parsing, this is important to understand the H264 video frame. The H264 data definition is made up of a set of bit b

H264 code stream parsing and Nalu

FFmpeg extract H264 Nalu from mp4 http://blog.csdn.net/gavinr/article/details/7183499 639/* bitstream filters */ 640 REGISTER_BSF (AAC_ADTSTOASC, AAC_ADTSTOASC); 641 REGISTER_BSF (CHOMP, CHOMP); 642 REGISTER_BSF (Dump_extradata, dump_extradata); 643 REGISTER_BSF (H264_MP4TOANNEXB, H264_MP4TOANNEXB); 644 REGISTER_BSF (HEVC_MP4TOANNEXB, HEVC_MP4TOANNEXB); 645 REGISTER_BSF (Imx_dump_header, Imx_dump_header); 646 REGISTER_BSF (Mjpeg2jpeg, mj

J2ME MIDP Currency Converter Tutorial for NetBeans IDE 4.0

J2ME MIDP Currency Converter Tutorial for NetBeans IDE 4.0 Feedback http://www.netbeans.org/kb/articles/tutorial-currencyconverter-40.html Feedback The Currency Converter application you are build in this tutorial shows you to: Start a J2ME MIDP project Code a working J2ME MIDP application, or MIDlet, using the IDE Create project configurations to test the application ' s performance on two different de

Multimedia Development --- h264 format slice_header

slice header .). Slice_alpha_c0_offset_div2: returns the offset value used to enhance α and tc0. Filteroffseta = slice_alpha_c0_offset_div2 The range of slice_alpha_c0_offset_div2 is-6 to + 6. Slice_beta_offset_div2: returns the offset value used to enhance β and tc0. Filteroffsetb = slice_beta_offset_div2 The range of slice_beta_offset_div2 is-6 to + 6. Conditions for the existence of these two elements: disable_deblocking_filter_idc! = 1. For these elements, you only need to know that they

H264 Flow, frame structure

Hierarchical structure of H264 elementsIn the bit stream of the encoder output, each bit is subordinate to a syntactic element. Syntactic elements are organized into hierarchical structures that describe each level of information.In H. Five, the syntactic elements are organized into sequences, images, slices, macro blocks, and Submacro blocks. In such a structure, the head of each layer and its data part form a strong dependency relationship between m

Use ffmpeg to encode the BMP image as a x264 video file and save the H264 video as a BMP image,

Use ffmpeg to encode the BMP image as a x264 video file and save the H264 video as a BMP image,The ffmpeg open-source library encodes bmp images into x264 files and decodes and saves the encoded H264 files as BMP files. Based on the blog code, you can build a test environment in vs2010. Resource download code: # Define _ AFXDLL # include The following information is reported when you test the code in the b

Use FFMPEG for h264 Encoding

] +Sizeof(Bitmapfileheader), nheadlen ); Nwidth = BMP iheader. biwidth;// 464; // bmi.bmp info. bmiheader. biwidth ;//; Nheight = BMP iheader. biheight;// 362; // bmi.bmp info. bmiheader. biheight ;//; Sztxt [filei-1] + = BMP fheader. bfoffbits; Ndatalen = nLen-bmpFHeader.bfOffBits; } Av_register_all (); Avcodec_register_all (); Avframe * m_prgbframe =NewAvframe [1];// RGB frame data Avframe * m_pyuvframe =NewAvframe [1];// YUV frame data Avc

Use ffmpge for video compression (from image to h264 Video Stream)

; // encode the video data cache int outbuf_size; // encode the output data de-size int ndatalen; // The length of the RGB image data area int width; // The output video width int height; // output video height public: void ffmpeg_encoder_init (); // initialize void ffmpeg_encoder_setpara (codecid mycodeid, int vwidth, int vheight); // set the parameter. The first parameter is the encoder, the second parameter is the width of the compressed video, and the third video is its height void ffmpeg_en

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