Developer best practices day-1st-Streaming Media Technology session Who is your technical master? What technology are you most interested in? What are the most popular hardware? Developers want to know what they want to contact on the "Developer best practices Day "! The "Developer best practices day" is a series of technical salons launched by qiniu cloud storage and jointly organized by partners for developers. It focuses on technical problems tha
From: http://www.cnblogs.com/riky/archive/2007/03/04/663269.html
1. Introduction to streaming media
The volume of multimedia information is large. audio/video and other information are transmitted over the network in two ways: Download and stream transmission. Streaming Transmission adopts the principle of receiving and playing, that is, the data stream is transmitted continuously and in real time by
On Android, video/audio streaming is a very rare part of the spotlight. RTMP (Real time Messaging Protocol) is indispensable whenever we discuss streaming media. RTMP is a basic video/audio streaming protocol, but unfortunately Android standard Videoview does not support rtmp playback. Therefore, if you want to play rtmp live
The streaming framework allows programs implemented in any program language to be used in hadoopmapreduce to facilitate the migration of existing programs to the Hadoop platform. So it can be said that the scalability of Hadoop is significant. Next we use C + +, PHP, Python language to implement Hadoopwordcount. Combat one: C + + language implementation WordCountCode implementation:1) C + + language implementation WordCount in the mapper, the file is
Two days ago, our development brothers finally implemented and deployed our streaming media overall solution, although all are open source projects, but we have to test the performance of the service internally, this task was thrown to me.First of all, the performance loss of the internal links, testing the single-source, multi-channel streaming scene.Using Golang, write the following program:Package MainIm
Stream processor The term first appeared in the eyes of the people also back to December 4, 2006, Nvidia on the day of the official release of the next generation of DX10 graphics 8800GTX, in the technical parameters of the table, do not see the usual use of two parameters: Pixel pipelines ( Pixel rendering pipeline) and vertex pipelines (vertex shading unit), replaced by a term: streaming processor, the Chinese translation is the Flow processor (also
RTMP is designed for transport network streaming, requires support from servers such as Fms,awaza, and provides better copyright protection for streaming media content, and it also needs to pay royalties to adobe itself.
First, the two work differently:
RTMP data requires a dedicated server to receive, such as FMS, Awazal, etc., and then play through the local Flash player.
The HTTP protocol can transf
The spark version tested in this article is 1.3.1Spark Streaming programming Model:The first step:A StreamingContext object is required, which is the portal to the spark streaming operation, and two parameters are required to build a StreamingContext object:1, Sparkconf object: This object is configured by the Spark program settings, such as the master node of the cluster, program name and other information
(1) "Real-time streaming Protocol (RTSP)" More official information (link).(2) "FFmpeg" in the Baidu Encyclopedia of the Introduction (link).(3) "FFmpeg" official website: http://ffmpeg.org/, using ffmpeg to develop streaming media player instances here.(4) There are two good posts on "http://stackoverflow.com/", which give examples, posts (here) and post two (here).(5) "RTSP
After installing Darwin streaming Server, you can use VLC to play streaming media files through the RTSP protocol. But now I have a need to send a DSS (assumed to be a machine) on the media file to another DSS (assuming B machine) on the client VLC by accessing the B machine to play the media files of a machine, that is, using B machine as a forwarding server. I found a lot of articles on the internet about
/group | grep QTSS to see if a QTSS group existsDoes not exist, it is created separately.QTSS groups and users in this article do not exist, they need to be created as follows:$ Addgroup-system QTSS$ adduser-system-no-create-home-ingroup QTSS QTSS11 Extracting the generated DSS installation packageUnzip the darwinstreamingsrvr-linux.tar.gz file and enter$tar XVF darwinstreamingsrvr-linux.tar.gz$CD darwinstreamingsrvr-linux/12 Execute./install, you will be prompted to enter a user name and passwo
The main contents of this section:first, Dstream and A thorough study of the RDD relationshipA thorough study of the generation of StreamingrddSpark streaming Rdd think three key questions:The RDD itself is the basic object, according to a certain time to produce the Rdd of the object, with the accumulation of time, not its management will lead to memory overflow, so in batchduration time after performing the Rdd operation, the RDD needs to be managed
Exactly once
Output is not duplicatedA. Purpose of the course: Customize and develop the spark version you need, including fixes for spark Bugs , improvements in performance, expansion of functionality, as per your business needs In short, suitable for their own company's maintenance, easy easy to understand, easy to maintain. B. transaction processing, such as bank transfer, transaction input and output should be consistent with the transactionOn the one hand processing can be proces
Contents of this issue:1 Online Dynamic Computing classification the most popular products case review and demonstration2 Case-based penetration Spark Streaming the operating sourceFirst, the case codeDynamically calculate the hottest product rankings in different categories of e-commerce, such as the hottest three phones in the phone category, the hottest three TVs in the TV category, etc.Package Com.dt.spark.sparkstreamingimport Org.apache.spark.Spa
Contents of this issue:
Spark Streaming data cleansing principles and phenomena
Spark Streaming data Cleanup code parsing
The Spark streaming is always running, and the RDD is constantly generated during the calculation, such as producing a bachduration per second and also producing an RDD,In this process, in addition to the basic RDD, there are
RTMP (Real time Messaging Protocol) is a common streaming media protocol, used to transmit audio and video data, combined with flash, widely used in live, on-demand, chat and other applications, as well as PC, mobile, embedded and other platforms, is to do streaming media development often come into contact with the protocol. I've written an article before.RTMP protocol sends H. ENCODE and AAC encoded audio
The VLC Kaiyuan project is quite powerful, and we can use it as a playback core for two development and as a high-performance streaming media server. This blog is mainly about using VLC to build a streaming media server.VLC building the streaming server step is very easy: Select input data, select output format, select Encoder, select Liquidity. The input data so
My last blog, "Two modes of Big Data Processing", discusses the large-format memory-based streaming processing and hard disk-based storage processing. Compare these two processing modes, because the memory processing performance is the hard disk's n magnitude, so the stream processing efficiency is much higher than the storage processing, but the stream processing itself has a disadvantage, or is a worry, last time did not mention, today to say.This d
Prepare hadoop streaming
Hadoop streaming allows you to create and run MAP/reduce jobs with any executable or script as the Mapper and/or the CER Cer.
1. Download hadoop streaming fit for your hadoop version
For hadoop2.4.0, you can visit the following website and download the JAR file:
Http://mvnrepository.com/artifact/org.apache.hadoop/hadoop-
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