color of paint,
The RGB mode is often used on the monitor, which is different from the pal or NTSC video standard.
Conversion between YUV and yiq
The conversion formula between YUV, yiq, and RGB is as follows:
Y = 0.299r + 0.587G + 0.114b
U = B ━ y
V = r y
I = 0.877 (R-Y) cos33 platinum 0.492 (B-Y) sin33
Q = 0.877 (R-Y) sin33 + 0.492 (B-Y) cos33
RGB is composed of three primary colors: R, G, and B. Similarly, YUV is composed of three elements: Y, U, and V. In pal
The conversion formula used for
FFMPEG and ffserver can be used together to implement real-time Streaming Media Services.
I. Understanding
There are four main things in it, and the relationship between them is almost clear.
1. FFMPEG
2. ffserver
3. ffserver. conf
4. feed1.ffm
1. FFmpeg is responsible for the transcode of media files. It converts the source media files on your server into the streaming media files to be sent.
2. ffs
Contents of this issue:
A thorough study of the relationship between Dstream and Rdd
A thorough study on the generation of RDD in streaming
The question is raised:1, how the RDD is generated, depends on what generated2. Is execution different from the RDD on the spark core?3. How do we deal with it after operation?Why there is a 3rd: Because the spark streaming with the relevant trigger
The objectives of this blog post are as follows:1. Receiverblocktracker Fault-tolerant security2. Dstream and Jobgenerator fault-tolerant securityThe article is organized in the following ways:considering driver fault-tolerant security, what do we have to think about? Detailed analysis of Receiverblocktracker,dstream and Jobgenerator fault-tolerant securityOne: Fault-tolerant security1. Receivedblocktracker is responsible for managing the metadata of the spark
Spark StreamingSpark streaming uses the spark API for streaming calculations, which means that streaming and batching are done on spark. So you can reuse batch code, build powerful interactive applications using Spark streaming, and not just analyze data.
Spark Streaming Ex
Contents of this issue:
Empty RDD processing in Spark streaming
Spark Streaming Program Stop
Since each batchduration of spark streaming will constantly produce the RDD, the empty rdd has great probability, and how to deal with it will affect the efficiency of its operation and the efficient use of resources.Spark
Three kinds of frameworks for streaming big data processing: Storm,spark and SamzaMany distributed computing systems can handle big data streams in real-time or near real-time. This article provides a brief introduction to the three Apache frameworks, such as Storm, Spark, and Samza, and then tries to quickly and highly outline their similarities and differences.Many distributed computing systems can handle big data streams in real-time or near real-t
The current mainstream streaming servers are Microsoft's Windows Media Server, RealNetworks Helixserver and Apple's Darwin streaming server. Microsoft Windows Media Server can only be used under Windows2000 Server and Windows 2003 server, not in the list of considerations. RealNetworks's Helixserver is a cross-platform software that is also powerful, but not freeware.Darwin
Preface: Recently in the research Spark also has Kafka, wants to pass the data which the Kafka end obtains, uses the spark streaming to carry on some computation, but constructs the entire environment is really not easy, therefore hereby writes down this process, shares to everybody, hoped that everybody may take a little detour, can help everybody!Environment Preparation:operating system: ubuntu14.04 LTSHadoop 2.7.1 Pseudo-distributed construction
MPMoviePlayerController
Brief introductionMPMoviePlayerController both support local audio and video playback also support network streaming media playback, the function has been very perfect, streaming media projects commonly used requirements can be met, such as play, pause, fast forward, back, listen to the playback status of the player, and other functions, At the same time MPMoviePlayerController p
Overview
Flume: A distributed, reliable, and usable service for efficiently collecting, aggregating, and moving large-scale log data
We build a flume + Spark streaming platform to get data from flume and process it.
There are two ways to do this: Use the push-based method of Flume-style, or use a custom sink to implement the Pull-based method.
Approach 1:flume-style push-based Approach
Flume is designed to push informati
Goal:Build a live Streaming media server system (Linux operating system)Background:A set of streaming media server systems for OTT-TV large concurrent live and on-demand. Supports server-side solutions that record back and live on N x 24 hours.Solution:L Microsoft Windows Media ServicesL Server-side software: Windows Media ServerL Platform: WindowsL file Format: ASF, WMV-------------------------------------
Note:this article is originally posted on a previous version of the 500px engineering blog. A lot has changed since it is originally posted on Feb 1, 2015. In the future posts, we'll be covering how we image classification solution has and evolved what other interesting Mach INE learning projects we have.
Tldr:this Post provides an overview the how to perform large scale image classification using Hadoop streaming. Component individually and identify
Label:Scenario: Use spark streaming to receive the data sent by Kafka and related query operations to the tables in the relational database;The data format sent by Kafka is: ID, name, Cityid, and the delimiter is tab.1 Zhangsan 12 Lisi 13 Wangwu 24 3The table city structure of MySQL is: ID int, name varchar1 BJ2 sz3 shThe results of this case are: Select S.id, S.name, S.cityid, c.name from student S joins C
The streaming server, of course, helix is good, but it is too expensive. What should I do if I am unwilling to use piracy? I have developed such a path over the past few days. Ubuntu9.04 uses apple's Darwinstreamingserver. It is an open-source version of 5.5.5 that supports 3gp, mov, mp4, and other formats for Linux, test results failed, maybe I did not set it) the latest version 6.0.3 only supports Unix and mac, I
The
HLS (HTTP Live streaming) is Apple's dynamic bitrate adaptive technology. Audio and video services primarily for PC and Apple terminals. Includes an index file for M3U (8), a TS media shard file, and a key encryption string file.The key to HLS is to generate m3u8 index files and TS Media shards, and I'll cover the generation of m3u8 and TS media shards by following several steps:The first step ---Get the TS file:TS (Transport stream) is a transport st
Recently, we need to test whether Android supports streaming media playing through the HLS protocol. Some examples on the Internet are used to play local files, and some online files are not streaming media using the HLS protocol. According to the updated description of Android3.0, Android3.0 has started to support most of the HLS streaming media types, so we did
finished generating.How to run:Open the Darwinstreamingserver folder and double-click Install.bat to automatically copy the program to C:/Program Files/darwin streaming server/... , and generate the movies directory to place the media file. The concrete process wants to understand the words can see Install.bat content.The command-line window opens C:/Program Files/darwin streaming server/execution:#DarwinS
Windows environment build RED5 Streaming Media server guideTest environment: Windows 7First, Download installation program
Red5-server
Https://github.com/Red5/red5-server/releases
Jdk
Http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Red5 example (e.g. Oflademo), to FQ
http://red5.googlecode.com/svn/java/example/trunk/
FlowPlayer
Https://codeload.github.com/flowp
pure front-end engineers. And lately, there have been a lot of plugins in the Grunt community to help developers organize/manage/simplify bloated Gruntfile , and the results are good. So on this point, it's a matter of opinion.
The lag in Process control creates a headache for temporary files/folders resulting in performance lag . This is the focus of the gulp.js knife, but also the "flow of construction" in this title to solve the fundamental problem. The flow-type construction changes
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