h264 viewer

H264 is a new generation of coding standards, high compression high-quality and support a variety of network streaming media transmission is known, in terms of coding, I understand his theoretical basis is: reference for a period of time, the statistical results show that in several adjacent images, there is generally a difference in pixels only 10% of the points, The difference in brightness does not change beyond 2%, and the chroma difference is onl

Have such a demand, give you a h264 raw data file, let you play directly out, how to implement?The idea is that the H264 raw data format is 0x00000001 back with 0x67 0x68 0x65 0x41 Such data, decoding requires a complete NAL data unit, We need to read the data from each 0x00000001 and the next 0x00000001 before decoding it to the decoder.Read the file I will not wordy, this article mainly explains how to ob

---------------------- Objective ----------------------- H264 is a new generation of coding standards, with high compression quality and support for a variety of network streaming media transmission is known, in terms of coding, I understand his theoretical basis is: the reference to a period of time the image of the statistical results show that in the adjacent several images, the general difference in pixels only 10% points, The brightness differenc

----------------------- Objective ----------------------- H264 is a new generation of coding standards, high compression high-quality and support a variety of network streaming media transmission is known, in terms of coding, I understand his theoretical basis is: reference for a period of time, the statistical results show that in several adjacent images, there is generally a difference in pixels only 10% of the points, The difference in brightness d

H264 is a new generation of coding standards, high compression high-quality and support a variety of network streaming media transmission is known, in terms of coding, I understand his theoretical basis is: reference for a period of time, the statistical results show that in several adjacent images, there is generally a difference in pixels only 10% of the points, The difference in brightness does not change beyond 2%, and the chroma difference is onl

Source:http://www.aichengxu.com/view/37145In the iOS platform using ffmpeg decoding H264 video stream, there is a need for friends to refer to below.For mainstream video transmission protocols such as video files and RTSP, FFmpeg provides a avformat_open_input interface that can be opened directly by passing in a file path or URL. Reading video data, decoder initial parameter settings, etc., can be done by invoking the API.However, for

To put it simply, the MKV and AVI formats only encapsulate containers, which encapsulate video streams and audio streams. The container does not affect the image quality. What affects the quality is what is encapsulated in the container. Therefore, changing the container does not affect definition subtitle audio. I would like to add some basic knowledge about video. Maybe there is something wrong with it. First, the video format does not determine the definition. The definition of a video depend

reference for intra-frame prediction. P Macro Block uses the previously encoded image as the reference image for intra-frame prediction. The B Macro Block uses two-way reference images (the previous frame and the next frame) for intra-frame prediction. The purpose of an slice is to limit the spread and transmission of codes so that the encoded slice is independent of each other. The prediction of a piece cannot take the Macro Block in other pieces as the reference image, so that the prediction

The previous article introduced the "H264 video through the rtmp streaming", the following will explain how to H264 real-time video through the RTSP live. The realization idea is to send the video stream to the live555, and the live555 to realize the H264 data stream live. The video capture module sends the H264 data f

One, H264 video encoded into MP4 file See: H264 video encoded into MP4 file See: Compilation of Mp4v2 under VS2010 and its use in projectsRecently do the project needs to be H264 file encapsulated as MP4 file, from the Internet to find the MP4V2 library, downloaded down do not know where to start, the official website https://code.google.com/p/mp4v2/in the comp

IVideo Encoding 1.1 target of video compression and encoding 1) Ensure compression ratio 2) Ensure recovery quality 3) easy to implement, low cost, and reliability 1.2 starting point of compression (feasibility) 1) Time Correlation In a video sequence, adjacent two adjacent frames have very few differences. This is the time correlation. 2) Spatial correlation In the same frame, there is a large correlation between adjacent pixels. The closer the two pixels are, the stronger the side correlation

Recently I want to upgrade my TV, so I want to buy a 46 (47) TV. I have locked several models on the Internet. Today I went to Suning and Dazhong and Gome to see the actual results, I would like to share with you that everything is my subjective feeling and the feeling of a batch of prototypes I have seen. So only one reference is provided. Source of the test: 1. 720 p MKV format x264 embedded subtitle cartoon aptx Conan. 2. h264 1080 p Deep Blue 3,

If you want to transmit video streams in real time when using Android phones for h264 hard encoding, you need to know the sequence parameter sets (SPS) and picture parameter set (PPS) of the video stream ). Today, I understand how to obtain SPS and PPS. I will record them here. I hope you can get some help here. First, let's take a look at the prerequisites. The video recording parameters I set are: Mmediarecorder. setoutputformat (mediarecorder. outp

I wrote an article earlierArticleAnalysis of the format of using RTP for h264 packets: RTP encapsulation of h264. However, it seems that the split and some situations that need attention are not clearly stated, so here we will make a supplement and also serve as our own memo (I don't seem to have a good memory ). note that the sampling rate of h264 is

To play the H264 bare stream, you can split it into the following three jobs:1. Decoding H264 bare stream to get YUV data2. Convert YUV data to RGB data fill picture3. Display the captured pictureTo complete the work 1, we can directly use the HiSilicon decoding library, because the HiSilicon decoding library is C + + dynamic library, to complete in C # call can refer to HiSilicon

slice is incremented by 2.The frame rate recorded in the SPS in H264 is usually twice times the actual frame rate time_scale/num_units_in_tick=fps*2Therefore, the actual calculation formula should be this wayPTS=1000* (I_FRAME_COUNTER*2+PIC_ORDER_CNT_LSB) * (Time_scale/num_units_in_tick)or aPTS=1000* (I_FRAME_COUNTER+PIC_ORDER_CNT_LSB/2) * (TIME_SCALE/NUM_UNITS_IN_TICK/2)So, the 11th frame of PTS should be so calculated1000* (9*2+2) * (Time_scale/num

iOS audio AAC video H264 coded push flow best practicesProjects are personal research and experimentation, there may be many bad or wrong places please forgive.1 Overview of features* Realization of audio and video data collection* Realize the encoding of audio and video data, video encoding into H264, audio encoding into AAC* To achieve the release of audio and video data, the encoded audio and video trans

, skip here.But there is a problem to note that non-IE browser session will be lost, the search for a lot of data, the final summary of the reasons are: Because Uploadify uses a flash client, it produces useragent different from the user-agent of the browser. Final Solution: Copy Code code as follows: Add the session parameter to the upmodify upload parameter as follows: Scriptdata: {"session_id": "}, Add the following code to the server-side receive page: if (@$_request['

H264 es raw data is generally in the format of the NAL (Network Abstract Layer). Can be used directly for file storage and network transport. Each nalu (Network Abstract Layer Unit) data is composed of data header +rbsp data. The first step is to split the data stream into a single, NALU data. The value of Nal_type,i_nal_type that gets Nalu equals 0x7 indicates that the NALU is an SPS packet. Find and parse this SPS packet, which contains very importa

Step by step learning, a little progress every day FFmpeg + x264 + QT Decoding code H264 Decoding: H264 encoded format of the MP4 file decoded after saving RGB to PPM format Encoding: Encode the decoded RGB format to H264 Code: Decoding section: . Pro TEMPLATE = AppCONFIG + = ConsoleCONFIG-= qt SOURCES + = Main.cppIncludepath + =-i/usr/local/include/LIBS + =-l/