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  • Architecture behind live streaming [on hold]

    - by l19
    I'm a Comp Sci undergraduate student, and I'm currently trying to understand the architecture behind streaming. I hear several terms and I'm not quite sure how they are related (e.g. streaming, broadcasting, ingesting, etc.) Is there a blog post or book that explains: How it all works in a high-level view (the workflow) The architecture (i.e. I capture content using my camera and want to display it real-time to an audience. I imagine that the content will be transferred to a server, but how does that server transmit the information to several users simultaneously?) Thanks!

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  • Is an Intranet music streaming server legal?

    - by Jon Smock
    We are a large organization with thousands of users, and we're peaking on our Internet usage. Many of those users are streaming music while they work. We're wondering if providing a music streaming server internally would help on bandwidth. How legal is that? Here are two scenarios: 1) We purchase a body of music legally and stream it internally (I assume this is illegal) 2) We pull music feeds from free, legal, online sources and "rebroadcast" internally (I assume this is legal) We want to save bandwidth and help our users, but we want to do it in an ethical and legal way.

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  • MWS2K8R2: Enabling Media Sharing using Streaming Media Services Role

    - by TheLizardKing
    So I have a Microsoft Windows Server 2008 R2 that stores a large collection of media (mostly mp3s) and I want to be able to deliver these files using a server/client setup with Windows Media Player being the client. I downloaded and installed Streaming Media Services Role. I even setup a publishing point with on-demand access. My issue is I can connect using WMP12 but it only connects as more of a stream and not a shared library. I can pause/play/skip as if it's a powerful radio station which is ok in my book but what I'd really like to do is allow me to control my music remotely, search and play for artists, maybe create playlists (not required but nice) and even connect it to an xbox. Is Streaming Media Services Role not what I should be using for this? Would installing WMP and sharing using that mechanism be a better option? Any Ideas?

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  • Tools to automate recording streaming radio

    - by Stan
    Is there any tool that can automate recording online streaming radio? I've been use totalrecorder which it has below upside: 1. Handy scheduler. 2. Support create recording templates, so I can customize some high/low quality recording. The downside are it requires to open the streaming radio in browser and can't have another sound source. It's recording what comes out from the speaker. What I am looking for is given a online radio url, and the tool can record the audio stream. No matter if I am playing any other music or not. Thanks.

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  • Darwin Streaming Server Interval Role

    - by Asmv9
    I want to use the Interval Role in Darwin streaming server,more specifically i want to call the QTSS_SetIntervalRoleTimer() when the server starts streaming a video file.But i have problem in doing this as from what it seems,the method returns QTSS_Err when i do that. I believe that the problem is due to the fact that the callback is made in a a module-created thread. Is there a specific place where this callback must be done?(if i put the callback in the register role of my module it works,but i dont want this,because i dont want the timer starting when the server starts).Any help will be useful,thank u in advance.

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  • Tools to automate recording streaming radio

    - by Stan
    Are there any tools that can automate recording online streaming radio? I've been using Total Recorder which has the following useful features: Handy scheduler Supports creating recording templates, so I can customize some high/low quality recording Unfortunately it requires opening the streaming radio in a browser and can't have another sound source at the same time; it's recording what comes out from the speaker. What I am looking for is given an online radio URL, the tool should be able to record the audio stream, no matter if I am playing any other music or not. Does such a tool exist?

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  • bursty streaming video

    - by broiyan
    What is the cause and solution for the bursty streaming media problem? Example: when streaming from youtube, audio (and video) will pause and start intermittently. When it starts it will be bursty, that is, it will play several seconds of sound in just a fraction of a second. Normal sounds are rendered unrecognizable. Then it may pause and after a few seconds, resume with another burst. The video seems to burst along with the audio. This was observed on Ubuntu 12.04 with Google Chrome.

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  • Dowload size of Streaming Videos

    - by Excalibur2000
    I would like to know that if a website advertises a streaming download as say 100MB, would my download to my computer be 100MB ? Would there be streaming control packets that a service provider would charge for over and above the 100MB content ? Assume the latest RealPlayer viewer. The rub for me is that I have downloaded MIT lectures and according to my file manager the file sizes have matched up to the download sizes on YouTube. However my ISP seems to think that the streams were larger and charged me for more than the file size of the download. I am left wondering where the data came from.

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  • Oracle Loader for Hadoop 1.1.0.0.3

    - by mannamal
    We are pleased to announce availability of Oracle Loader for Hadoop 1.1.0.0.3, containing bug fixes and performance improvements to Oracle Loader for Hadoop. The updated product can be downloaded from here: http://www.oracle.com/technetwork/bdc/big-data-connectors/downloads/big-data-downloads-1451048.html Note that the Oracle Loader for Hadoop 1.1.0.0.3 kit is a complete kit containing the product and bug fixes. Fixes of the earlier version 1.1 patch releases are also included. Upgrading to Oracle Loader for Hadoop 1.1.0.0.3 (from versions 1.1.x): On the Oracle Big Data Appliance:  1. 1.  Upload the new oraloader rpm to the first Oracle Big Data Appliance server.  For example:   /tmp/oraloader-1.1.0.0.3-1.x86_64.rpm 2.     As the root user, use dcli from the first Oracle Big Data Appliance server to copy the new rpm to all nodes. For example:   #dcli -f /tmp/oraloader-1.1.0.0.3-1.x86_64.rpm  -d /tmp/oraloader-replace.rpm 3. 3.  As the root user, use dcli from the first Oracle Big Data Appliance server to replace the old oraloader rpm with the new one.  For example:  #dcli "rpm -e oraloader ; rpm -Uvh /tmp/oraloader-replace.rpm" On other hardware: 1. 1.  Unzip oraloader-1.1.0.0.3.x86_64.zip at <location of install> 2. 2.  Update OLH_HOME to point to <location of install>/oraloader-1.1.0.0.3 

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  • FairScheduling Conventions in Hadoop

    - by dan.mcclary
    While scheduling and resource allocation control has been present in Hadoop since 0.20, a lot of people haven't discovered or utilized it in their initial investigations of the Hadoop ecosystem. We could chalk this up to many things: Organizations are still determining what their dataflow and analysis workloads will comprise Small deployments under tests aren't likely to show the signs of strains that would send someone looking for resource allocation options The default scheduling options -- the FairScheduler and the CapacityScheduler -- are not placed in the most prominent position within the Hadoop documentation. However, for production deployments, it's wise to start with at least the foundations of scheduling in place so that you can tune the cluster as workloads emerge. To do that, we have to ask ourselves something about what the off-the-rack scheduling options are. We have some choices: The FairScheduler, which will work to ensure resource allocations are enforced on a per-job basis. The CapacityScheduler, which will ensure resource allocations are enforced on a per-queue basis. Writing your own implementation of the abstract class org.apache.hadoop.mapred.job.TaskScheduler is an option, but usually overkill. If you're going to have several concurrent users and leverage the more interactive aspects of the Hadoop environment (e.g. Pig and Hive scripting), the FairScheduler is definitely the way to go. In particular, we can do user-specific pools so that default users get their fair share, and specific users are given the resources their workloads require. To enable fair scheduling, we're going to need to do a couple of things. First, we need to tell the JobTracker that we want to use scheduling and where we're going to be defining our allocations. We do this by adding the following to the mapred-site.xml file in HADOOP_HOME/conf: <property> <name>mapred.jobtracker.taskScheduler</name> <value>org.apache.hadoop.mapred.FairScheduler</value> </property> <property> <name>mapred.fairscheduler.allocation.file</name> <value>/path/to/allocations.xml</value> </property> <property> <name>mapred.fairscheduler.poolnameproperty</name> <value>pool.name</value> </property> <property> <name>pool.name</name> <value>${user.name}</name> </property> What we've done here is simply tell the JobTracker that we'd like to task scheduling to use the FairScheduler class rather than a single FIFO queue. Moreover, we're going to be defining our resource pools and allocations in a file called allocations.xml For reference, the allocation file is read every 15s or so, which allows for tuning allocations without having to take down the JobTracker. Our allocation file is now going to look a little like this <?xml version="1.0"?> <allocations> <pool name="dan"> <minMaps>5</minMaps> <minReduces>5</minReduces> <maxMaps>25</maxMaps> <maxReduces>25</maxReduces> <minSharePreemptionTimeout>300</minSharePreemptionTimeout> </pool> <mapreduce.job.user.name="dan"> <maxRunningJobs>6</maxRunningJobs> </user> <userMaxJobsDefault>3</userMaxJobsDefault> <fairSharePreemptionTimeout>600</fairSharePreemptionTimeout> </allocations> In this case, I've explicitly set my username to have upper and lower bounds on the maps and reduces, and allotted myself double the number of running jobs. Now, if I run hive or pig jobs from either the console or via the Hue web interface, I'll be treated "fairly" by the JobTracker. There's a lot more tweaking that can be done to the allocations file, so it's best to dig down into the description and start trying out allocations that might fit your workload.

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  • Loading from Multiple Data Sources with Oracle Loader for Hadoop

    - by mannamal
    Oracle Loader for Hadoop can be used to load data from multiple data sources (for example Hive, HBase), and data in multiple formats (for example Apache weblogs, JSON files).   There are two ways to do this: (1) Use an input format implementation.  Oracle Loader for Hadoop includes several input format implementations.  In addition, a user can develop their own input format implementation for proprietary data sources and formats. (2) Leverage the capabilities of Hive, and use Oracle Loader for Hadoop to load from Hive. These approaches are discussed in our Oracle Open World 2013 presentation. 

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  • Stream video from a computer to a tablet

    - by NullOrEmpty
    I would like to watch presentations and college videos I have on my computer, from my tablet. There are almost a hundred of GB in videos, so I would like to watch them in streaming from my computer. My wife has also tons of videos so I have decided to do a kind of streaming local service to watch the videos from our tablets. I have found an article about how to do it with Internet Information Server, but the article is relaying in an application that is not free (Expression Encoder). Since this is for home fun, I am not willing to pay, so I would like to ask for some free encoder that can do the trick. I have no idea about streaming. Actually, I tried to hang the files directly on IIS, and the browser tried first to download some of them and some other (mp4?) got played badly, so I could not get a smooth video experience. What is missing? What is the deal with H.264 ? Can I roll with VC-1 and play videos in my Android tablet with streaming with an acceptable quality through my WLAN home network? Any better solution? Thanks.

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  • Cannot save tar.gz file to usr/local

    - by ATMathew
    I'm using the following instruction to install and configure Hadoop on Ubuntu 10.10. http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/#installation I tried to save the compressed tar.gz file to /usr/local/ but it just won't save. I've tried saving the tar.gz in my home folder and desktop and copying the files to the desired folder, but I get an error that tells me I don't have permission. How do I save and extract a tar.gz folder to /usr/local/hadoop?

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  • Hadooop map reduce

    - by Aina Ari
    Im very much new to map reduce and i completed hadoop wordcount example. In that example it produces unsorted file (with key value) of word counts. So is it possible to make it sorted according to the most number of word occurrences by combining another map reduce task to the earlier one. Thanks in Advance

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  • free video streaming API

    - by rl123
    Hi, I'm trying to build a website that will allow user to upload video files and show them as a streaming video. I'm a complete newbie in the streaming world so I don't know exactly how to do that, and I definitely don't want to reinvent the wheel. Are there any free platforms that I can use for that? Do I need a streaming server, or is there a special kind of player I can use that does not require dedicated server? Thanks!

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  • What are the ways to do synchronized streaming video and text?

    - by Marc
    I would like to have two streams. One being traditional streaming video and another being text. I will also build an interface that allows the user to create the text portion while watching the video. The context of these videos are usually that of an individual being filmed doing a presentation and later the next day for example, a coach will make text annotations (structured data is a plus) with the result being the text stream. It seems this is possible with Silverlight (see the article in the latest MSDN). However, what other methods are there if any? If there any, please give the reasons for why you are recommending them. Thanks. Also, I would prefer something that inst a software as a service hosted solution, but, dont let that keep you from giving an answer. Also keep in mind, the user shouldn't have to do any re-encoding of the video source, the text stream should be separate with someway to synchronize a coach's comments to an arbitrary time stamp in the video.

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  • Implications of Multiple JobTracker nodes in a Hadoop cluster?

    - by Jim Dennis
    I get the impression that one can, potentially, have multiple JobTracker nodes configured to share the same set of MR (TaskTracker) nodes. I know that, conventionally, all the nodes in a Hadoop cluster should have the same set of configuration files (conventionally under /etc/hadoop/conf/ --- at least for the Cloudera Distribution of Hadoop (CDH). Can we define multiple Job Trackers in mapred-site.xml? Something like: <configuration> <property> <name>mapred.job.tracker</name> <value>jt01.mydomain.not:8021</value> </property> <property> <name>mapred.job.tracker</name> <value>jt02.mydomain.not:8021</value> </property> ... </configuration> Or is there some other allowed syntax for this? What are the implications of doing this. Does each JobTracker get information about the load on each TaskTracker node. In other words can the two JobTracker co-ordinated their scheduling across the TT nodes only based on the gossip information from the TTs or would they need to talk to one another? Is this documented anywhere?

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  • Intranet Video-streaming

    - by Jonathan Sampson
    What's a good option for home-video-streaming. For example, somebody may use a laptop webcam to stream their baby's crib allowing them to monitor it from the main home PC. In this case, I wouldn't want to do it across the wire with skype, but instead keep it on my local network. What options exist to make this easy to achieve?

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  • Sirius Satellite Radio Streaming via XBOX 360

    - by Kyle B.
    Anyone have any luck with this? I've found a number of articles which point to an application uSirius which is apparently discontinued (bought out by Apple or something it looks like) but it is nowhere I have found. Basically I know media center has some baked in functionality for XM radio streaming, but nothing for Sirius radio. Anyone have any luck with this? Thanks, Kyle

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  • Baseline upload speed for streaming video on demand?

    - by Peter Turner
    Is there a table that shows what is necessary for streaming video on demand? Specifically what I'm trying to do is stream Video on Demand to 50-100 people. I'm flexible with the format, but I'd like text on the screen to be legible (i.e. not 320x240). If someone knows of a calculator or something that would let me figure out exactly how I need to structure my video and ISP that'd be handy too.

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