I spent this weekend building a new live video/audio player for the re-launch of My Live Session MLS Prototype V1

Here’s a rough demo of my latest flash video player:

The MyLiveSession Demo

Currently using old video files and images from the good old MLS days…better assets make it look a lot nicer!

In this setup i’m streaming .flv via rtmp from Flash Media Server; When i get time i’ll add some demos showing custom (psuedo stream) and progressive .flv plus a demo of the windows media overlay to handle .mpg, .mp4 and .wmv files via http all within the same UI.

I’d love to know how the preview function works for you – you can activate it by hovering your mouse over the prev/next buttons, just wait 5 seconds and the image shown will change to a video of the next stream, audio will switch as well (NOTE: some of the videos currently avaialble dont have audio for a few seconds once they start – so it’s not so obvious). When both stream are playing what is the performance on your computer like, acceptable??

Feedback and suggestions appreciated, cheers.

make to files with this code :–

user 1st :- //setup the camera and mic for streaming
mycam = Camera.get();
mycam_audio = Microphone.get();

//control the cameras mode and quality
mycam.setMode(320,240,30);
mycam.setQuality(10000,100);

//attach a live preview of the camera to the
//video object that is setup on the stage
cam_feed.attachVideo(mycam);
cam_feed.attachAudio(mycam_audio);

//connect to the Flash Media Server
client_nc = new NetConnection();
client_nc.connect(“rtmp://fms-server/app-name/”);
cam_ns = new NetStream(client_nc);

//attach our camera video and audio to the net stream
cam_ns.attachVideo(mycam);
cam_ns.attachAudio(mycam_audio);

//publish to our Flash Media Server as a
//live stream called user_1
cam_ns.publish(“user_1″, “live”);

//bring in user_2’s video/audio
in_ns = new NetStream(client_nc);
in_ns.play(“user_2″);

//attach user_1’s published audio and video
//so we can see them in the larger chat window
live_feed.attachVideo(in_ns);
live_feed.attachAudio(in_ns);
————————————————————–
User 2nd :-
//setup the camera and mic for streaming
mycam = Camera.get();
mycam_audio = Microphone.get();

//control the cameras mode and quality
mycam.setMode(320,240,30);
mycam.setQuality(10000,100);

//attach a live preview of the camera to the
//video object that is setup on the stage
cam_feed.attachVideo(mycam);
cam_feed.attachAudio(mycam_audio);

//connect to the Flash Media Server
client_nc = new NetConnection();
client_nc.connect(“rtmp://fms-server/app-name/”);
cam_ns = new NetStream(client_nc);

//attach our camera video and audio to the net stream
cam_ns.attachVideo(mycam);
cam_ns.attachAudio(mycam_audio);

//publish to our Flash Media Server as a
//live stream called user_2
cam_ns.publish(“user_2″, “live”);

//bring in user_1’s video/audio
in_ns = new NetStream(client_nc);
in_ns.play(“user_1″);

//attach user_1’s published audio and video
//so we can see them in the larger chat window
live_feed.attachVideo(in_ns);
live_feed.attachAudio(in_ns);

{Title}

vStream

{Description}

The idea for this project came from the desire to experiment with video and audio live streaming. I’ve done a good amount of research on the subject and have studied Flash Media Server documentation. From this research I understood the technical advantages and functionality that FMS can offer. Such as video on demand, streaming video stored on the server to the flash client; live video, a server-side application which allows user to broadcast their own video from a webcam to other users or to the server for recording and on demand viewing later; real time communication, an application which requires collaboration between multiple clients, such as a chat room or multiplayer game.

I decided to develop a FMS powered audio and video Livecasting application to provide live broadcasting, recording, storage, and playback options, as well as easy integration with social networking websites. The application will allow users to produce and watch live streaming videos. It will not have default video quality setting, instead it will use dynamic streaming and will set bitrate by testing the broadcaster’s available bandwidth. I will also develop a basic mini site to demonstrate the application and its integration. The vStream application will have PHP/MySql webservice support, allowing user video files to be stored on remote servers.

{Technologies}

Flash, Flash Media Server, PHP, MySql, XML

Flash Media Server (FMS) adalah data eksklusif dan server media dari Adobe Systems (awalnya sebuah produk Macromedia). Server ini bekerja dengan Flash Player runtime untuk menciptakan media yang didorong, Multiuser RIA (Rich Internet Applications). Server menggunakan ActionScript 1, sebuah bahasa scripting yang berbasis ECMAScript, untuk server-side logika. Sebelum versi 2, itu dikenal sebagai Flash Communication Server.

So in the next few weeks I’m going to be checking out some of the applications that Influxis has on their Flash Media Servers, and beyond that, hopefully trying my hand at programming some Flash stuff with more real-time-connectivity that usual. Its not something I’ve done in a lesson yet, and if you don’t know what I mean by real-time Flash, check out some of Influxis’ pre-built applications here. They’ve got chat apps, TV stations apps, web cam apps, and even an entire 3D chat world (demos are here)

Also design-wise, I think they have a pretty sweet site. I have a hunch your Influxis server probably doesn’t look like the one below, but its fun to imagine a computer that could also drift race.

So anyone have some brilliant ideas of things to try once I get my bearings here?

I was working on fail-over architecture for our application and came across this <duplicateDir> tag in application.xml which, I am quite sure that many of you advanced FMS users already know or some of you might be already using it in your FMS based applications to support Fail-over.

I designed an architecture for our application in this architecture I was trying to keep the same folder hierarchy on both server.  So that if FMS (machine 1) stops working and users connects to same running instance from FMS (machine 2) they get the last updated data on FMS (machine 2) dumped through duplicate functionality from FMS1. There is a property in tag to attach application directory name to the path on other server or not i.e. by assigning value true you can add application directory name to the path or it will just copy the files at instance path. But when I was switching off the app directory name by assigning false it was just copying all sharedobject/streams at the root instead of at instance path. If I keep the app directory by assigning it  true.  It copies at correct path including instance path but attaching application directory path at beginning.

Anyway thinking that it’s some kind of bug or I might be doing something wrong. I posted a query regarding it on Flashcomguru mailing list and here comes the reply from FMS team member:

The <DuplicateDir> functionality for SharedObjects has been deprecated; it probably shouldn’t have been documented, my apologies. I’ve added a note to the online docs (comments appear at the bottom of the page):
http://help.adobe.com/en_US/FlashMediaServer/3.5_AdminGuide/WS5b3ccc516d4fbf351e63e3d119f2926bcf-7ff0.html

So what do we do now? I mean how do we achieve the duplicate directory functionality for fail-over in case we have planned for future? Or in case some of you were using it in past? So here is the reply from Adobe engineering team:

<DuplicateDir> won’t be supported moving forward and existing bugs won’t be fixed, so it’s not a good idea to use it.
You can use the File plug-in to build a fail-over architecture for streams.

So good luck for all the FMS developers who were or are in process of implementing failover architecture and were planning to or already using this duplicate directory in their architecture.

Some other good way to implement failover is to follow architecture suggested by Rober A. Colvin

I am just curious to know that will NAS/SAN introduce any kind of latency?  Compared to the files being stored on and delivered from same  machine?

Please let me know if anyone has any idea about it.

A quick example of an idea i had yesterday.

Visualizing MyLiveSession

The Gamut Version

Just a small part of the new media player framework i’m building in preparation for the re-launch of MyLiveSession.

[NOTE]: Sometimes Flash Media Server will throw a sandbox error (it’s very random – not something i can fix yet) so if it does you’ll need to refresh your browser.

In a major reversal, Adobe (s ADBE) may support HTTP streaming in the next version of its Flash Media Server, reports Contentinople, citing unnamed sources. A move to HTTP would bring Adobe into stride with others in the video infrastructure market, including Microsoft Silverlight (s MSFT), Move Networks and now Apple (s AAPL). However it would put a dent in Adobe’s proprietary streaming revenues.

Adobe’s RTMP streaming transfers files from a special server in a single linear stream (the RT stands for “real-time”). It has been the market standard, especially in cases where video hosts are worried about copyright infringement, but new HTTP streaming products are cheaper and more scalable. They divide videos into chunks and transfer them in a non-persistent stream using regular web infrastructure.

Though Adobe’s Flash is the online video standard, the way the company makes money off of online video is by selling Flash Media Servers, which premium content sites buy to stream video using RTMP streaming. HTTP streaming, however, doesn’t require all those specialized servers. Contentinople, whose sources say a FMS 4.0 beta with HTTP streaming could be out in beta at CES in January, proposes that Adobe may be angling to make up cannibalized revenue by increasing use of Flash, which would in turn drive sales of Flash creative and development tools.

HTTP streaming is closely associated with adaptive bitrate streaming, in which chunks of video encoded at different bitrates are stitched together to provide the best possible quality stream throughout changing network conditions. That technology is especially important as content providers move to offer higher-quality, dependable web-delivered experience to an expanding list of of devices. (Adobe does already have something it calls “Dynamic Streaming” which also shifts bitrates automatically.) As I wrote in a feature for our paid service GigaOM Pro:

High quality video increases revenue potential because viewers have a more premium experience and watch for a longer amount of time… Adaptive bitrate streaming makes HD video a viable business, because it ensures a good experience for everyone by avoiding choked up pipes for those who can’t support HD, and giving a smooth, uninterrupted experience for those who can support it.

Here’s a quick demo showing showing my ideas for my latest video player.

You can also try this minimal version for yourself although both examples are now missing a lot of the latest features.

Looks like Flash Lite has recently evolved! Check out these links:

• Disributable Player
• Disributable Player Videos
• The Kunerilite Camera Plugin
• Blog Post – Implementing Kunerlite
• Useful Flash Lite Blog

So now i can extend my FMS live streaming app to take camera and audio input from a device…nice!

Job Title: Flash (AS 2/3) Expert
Location: San Carlos, CA
Relocation: Yes
Duration: Full time/permanent – on-site
Telecommuting: Some – 2 days per week
Salary: 100-140k

My San Carlos, CA client is an educational technology company that is revolutionizing how students learn. They create online, interactive learning solutions that increase student effort and engagement in their high school and college courses. They have helped 1,000,000 students at more than 900 institutions since product inception in 2002 and are looking for eager and like-minded individuals to join our brainy, creative, and lively group!

The Flash Expert will be responsible for designing and developing rich internet applications. This is a full time position based in San Carlos, CA with the option to telecommute 2 days a week. Initial projects are in ActionScript 2; later they’ll move to AS3 and Flex.

Specific Responsibilities:
* Research, design, and develop Flash RIA’s (some general, some discipline specific)
* Work closely with domain experts, product management, customer support and sales to review requirements and technical specifications
* Review test plans with QA and participate in code reviews with developers

Basic Qualifications Required:
* Bachelor’s degree in Computer Science or related field
* 5+ years development experience in Flash creating Rich Internet Applications
* Proficient developing in ActionScript 2.0
* Excellent written and verbal communication skills
* Ability to work with minimal supervision and thrive in a start up environment

Preferred Qualifications:
* Master’s degree in Computer Science or related field
* Proficiency in ActionScript 3.0
* Familiar with Flex
* Visual and UI design experience

To be considered, please submit your resume along with your salary requirements to beau at open-source-staffing.com

Thank you,

Beau J. Gould
Open Source Staffing
www.open-source-staffing.com
beau-AT-open-source-staffing.com

Flash, Flex, AIR (and related) Discussion / Jobs

http://www.linkedin.com/groups?gid=990627

Keywords (please ignore)

Flash 8, Flash 9, ActionScript, ActionScripting, Action Script, AS1, AS2, AS3, Flex, Flex 2, Flex 3, Adobe Flex Builder 3, Flex Builder 3, Flex 3 SDK, Flex lite, Flexlite, Flash Media Server, Flash Remoting, Flash Video, Flash Game, AMFPHP, OpenAMF, AIR, Cairngorm, BlazeDS, Director, Lingo, ACID, Sound Forge, Toast, Quicktime, After Effects, PhotoShop, Illustrator, Dreamweaver, Fireworks, Javascript, Lingo, PHP, AJAX, ASP, MySQL, Visual Basic, XML, MXML, HTML, CSS, OOP, Rich Internet Application, RIA

Robin lets you code flexible Flash real time applications like multiuser games, shared whiteboards and chats.  Robin is a custom AS3 class for Adobe Flash combined with a turnkey PHP socket system.  Please see the VIDEO and the sample CODE.

You only need to code in Flash ActionScript

Robin works on a simple principle.  You save properties such as your x and y position and you get to read other people’s properties such as their x and y positions.

FEATURES

• Any number of application names
• Unlimited users or specify how many people per “room”
• History data for new people joining your application
• Shared unique data available as an array
• Optionally let new users fill in for users who have left
• Get the latest updated property values at any time

If you are familiar with the Flash Media Server, the “latest property value” works like a shared remote object.

Robin’s strength is that, unlike a shared remote object in the Flash Media Server, you have control of everyone’s unique properties simply through an array.  So if you are saving a name property in a chat, you can access everyone else’s name property as:

["Dan Zen", "Colin Moock", "Nonoba", "AMFPHP" "RED5"]

When people update their text,  an event is triggered and this array is updated.

Robin has a host of other methods and properties but really, it just takes a couple lines of code to make use of its power.  Three samples are provided in the download:

• a sample chat showing the history multi-room features
• a multiuser game with avatars under unique control
• a shared ball where anyone can move the ball

There is no back end PHP coding

You just set up PHP and set your Server address in the setUp.php file.  There is a simple admin system that lets you start your socket server.  All the tricky code has been written to provide real time data to the Robin Flash class. We suggest that you start Robin with a cron job although precautions are in place to restart the socket server should it stop.  Details are provided in the readme.txt in the Download ZIP.

FRIENDS AND DONATIONS
Please let us know if you use Robin and we will add you to the Friends area at left.  If you use Robin for a commercial venture and would care to donate that would be super!

FEATHERS
Robin is one of a selection of open source solutions called Flash Feathers available at http://flashfeathers.wordpress.com.

Dan Zen

-09-

I guess if you took the time to read this you are all familiar with Flash Media Server (FMS), Wowza, Red5 and others. Well, there is another player in this business and it seems that the project momentum makes it a favorite. The name is RTMPd located at rtmpd.com
Recently Adobe just threatened to sue Sourceforge if they don’t remove the rtmpdump project, which was actually a reverse engineer of the Flash client to dump RTMP (stands for Real Time Multimedia Protocol) data. All this was because the guy there reversed engineered the RTMPE protocol also (the encrypted one) and it is not so encrypted anymore, the reverse engineering showing lots of weaknesses. Well, yesterday rtmpd.com released the server version of the same protocol, becoming the first serious competitor to FMS. I know this sounds like an ad for some of you, but the server I am talking about is free, yes, you heard me right: BSD license. It works on all BSD platforms, OSX and Windows. The Linux port is underway.

P.S. I am one of the contributors

http://www.flashcomguru.com/index.cfm/2009/5/26/adobe-dmca-rtmpdump

Có một dự án tên là RTMPDump, dự án này công bố rộng rãi các đặc điểm gói tin và các phương pháp khai thác lấy thông tin các khóa và chiếm kết nối RTMPE sử dụng vào các mục đích phi pháp. (Xem tại đây)

It is the fact that rtmpdump can circumvent certain access controls that made Adobe react. By posing as a Flash Player, rtmpdump can connect to Flash Media Server and successfully pull and record an encrypted stream. In combination with the get_iplayer project rtmpdump made it possible to record all kinds of RTMP based content from sites such as channel4.com and the BBC iPlayer. The version of rtmpdump used within get_iplayer has now been removed and been replaced with a forked version called flvstreamer.

Flvstreamer only supports RTMP based delivery, it no longer works with RTMPE. SourceForge has also removed the project.

Sau khi Adobe thông báo yêu cầu SourceForge Inc hạ dự án RTMPDump xuống (đọc tại đây )vào ngày 08/05/09 thì RTMPDump nó chửi Adobe “fuck-you”:

http://lkcl.net/rtmp/

Dẫu sao thì RTMPE đã được công bố và áp dụng rộng rãi vào các ứng dụng cho đến giờ vẫn chưa có những phương án đối phó nào chính thức được đưa ra, hãy cập nhật tin nhé.

Tớ copy lên đây vì có thể mấy ngày tới trang này bị xử nốt

Annoy and embarrass sourceforge by nominating rtmpdump as "Best Multimedia"

sourceforge should have told Adobe to piss off.  If you agree that rtmpdump
is an important project, help embarrass sourceforge by nominating rtmpdump
as "Best Project for Multimedia":


RTMP

RTMP is an important network protocol which is utilised to communicate
audio and video.  Adobe, you have no right to restrict internet communication
or to tell people how they can and cannot communicate, or in what format,
and can go fuck yourselves if you think that you can bully people into
submitting via a blunt instrument called the "Digital Millenium Copyright Act",
a law which should never have been allowed to have been bought into
U.S. law in the first place.

RTMPE

RTMPE is an extension to RTMP to include encryption of content.
A clean-room specification is available here.
Please distribute freely and widely.  Please implement and distribute
free software source code implementations even wider.

Note to Adobe: fuck you and your attempts to call the use of industry
standard crypto primitives "proprietary".

Source code of rtmpdump

Source code of rtmpdump v1.6, with the get_iplayer application removed
(because i don't like the idea of providing people with the means to rip
off copyright content), is available here.

There is also a bittorrent tracker running: here's the rtmpdump v1.6 torrent

Unpacked source (for the adventurous)

Why would I remove get_iplayer yet still provide the source to rtmpdump?

get_iplayer is utilised to make copies of copyright material.
encouraging people to do that is stupid.

by contrast: rtmpdump is one of the VERY few free software
implementations of a really important networking protocol,
implementations of which I have been hunting down and looking for,
for a considerable amount of time.

my interest in RTMP is to encourage the creation of free software
real-time audio/video communication software, and, as you can see
from e.g. Red5, there do exist implementations,
just very few of them.

Red5 only contains a server-implementation (in java).
The python project rtmpy aims to be a free
software implementation of an RTMP library, whilst Tape intends to be a full
streaming server (in Python).  rtmpy is in active development.
There is a java client implementation of RTMP, called Flazr.
SWFDec has a partial and experimental implementation of RTMP.
swfdec is client-only.
Gnash has a partial and experimental implementations of RTMP.
Gnash has both client and server, sharing the same common source.  Cygnal
is making particularly good progress, as a server: video can already be
streamed from it, with real-time video planned for Q3 2009.
libRTMP by boxee contains an RTMP client library, and was used as
the basis for rtmpdump.
haxeVideo is a server implementation of RTMP in Haxe.
crtmpserver is a server implementation of RTMP that has implemented
(as of 25th may 2009) the RTMPE protocol.
 Mammoth, formerly known as OpenFMS, is a server implementation
that has implemented an RTMPE-compatible algorithm known as
"H264-compatible and DH handshaking".
RubyIzumi is an implementation of an RTMP server in Ruby.


Throwing out the baby with the bathwater, by going after free
software developers with a DMCA take-down notice, is just stupid.

Translation: "Adobe - get fucked".

Proprietary Implementations

For fits and giggles, here are a few fun items involving proprietary
implementations:

 Applian caved in and agreed:


"We have resolved a dispute with Adobe Systems Incorporated, [...], by agreeing not to circumvent any Secure RTMP Measures developed by Adobe."

Well, that was stupid of you - you lent weight to Adobe's belief that you
were actually doing any circumventing, and to their belief that there is
anything "secure" about Adobe's RTMP "measures".
 Smaxe java client, for research purposes.
Hmm, that means he can't apply to the softwarefreedom.org for help if he
gets smaxed with a DMCA takedown notice, can he.


Translation (sing along if you like): "Adobe come and geeet uuus, Adobe ..."

Is the RTMP protocol documented anywhere?

Yes.  Just not by Adobe.

Here is a list of web sites that document the RTMP protocol:

wiki.multimedia.cx
rtmpd
rtmp_os
osflash RTMP documentation
gnashdev
gnashdev
rtmpy
RTMPT
osflash.org
captsolo.net has more links.


Translation: "Adobe - go fuck your proprietary implementation"

Is this server in the United State?

It's in Maidenhead, UK.  So, no.  It isn't.  Translation: "Adobe - fuck off".

Analysis of RTMPE

RTMPE is definitely not a "Copyright Protection" mechanism.

An analysis of RTMPE (see "Analysis" section)
shows that RTMPE does nothing more than what SSL already does
(provide end-to-end secrecy, except without the protection against
man-in-the-middle attacks - RSALabs on DH, para 5)
and simply mathematically links a publicly-downloadable and
publicly-obtainable SWF file to the connection.

Bottom line: All the information required to obtain the content is
publicly available.  There is no "security".

If the information isn't publicly available (such as the SWF file to
be executed in the web browser) then the content cannot be obtained,
either.

Unfortunately, this leaves Adobe in the shit, if they've been
claiming that SWF verification is somehow "secure".  Anyone reading
this who has bought into Adobe Technology on the basis of "security"
or "protection" is advised to initiate legal action against Adobe,
seeking compensation and damages for deceiving them about the level
of "protection" of their Copyright material.

From Adobe's Web Site:




'(swf verification) ensures that only your SWF or AIR files can
connect to your application or content on Flash Media Server'.




This is false.  The correct interpretation is:




"if anyone can obtain the publicly-available SWF or AIR file (or a hash of it,
and knows the SWF or AIR file's size) they can also connect to your application
or content".

Translation: "Adobe, you fucked yourselves, royally, without anyone's help."

Are there any 'encryption' keys in RTMPE?

No, there are no encryption keys in RTMPE.  There are however three
magic constants which are used as input.  And, remember, also, the publicly
accessible SWF file - the one which you put on the web site to view the
content - is used as input to the algorithm as well (or, at least, its
hash and its size).

So if you want to get genuinely stupid, and consider the sentence
"Genuine Adobe Flash Player 001" to be a quotes key quotes, then
by that definition, so is the publicly accessible SWF file also a
quotes encryption key quotes.

This raises some hilarious implications:

how can you claim that a key is secret, yet make it publicly
available on the internet?
if you want to keep this "key" secret, surely you should
go after all web browser distributors, and everyone who has HTTP
cacheing technology, DEMANDING that they "protect" - remove -
SWF files from caches.


This latter is quite easily achieved.  you just block *.swf files.
Actually, all Free Software HTTP Proxy and Web Browser projects should
not risk being subjected to DMCA takedown notices and should block all
swf files, just to be on the safe side.

... after all, it's not like they can analyse the content being streamed
by the SWF file, because that would require either reverse-engineering
the SWF file on-the-fly in order to find out if it uses RTMPE, or setting
up a complex system of analysing network traffic (again, which would
be, like, illegal, like, cos you'd have to, like actually identify RTMPE
and would need to, y'know, know the algorithm?).

Presumably, though, on detection of RTMPE, then, well, by that
time, it's too late: the browser will have already received and be
executing the SWF file.  So, presumably, right, like that joke computing
language which had a "GO FROM" statement and an "IF THEN ELSE UNLESS"
construct, you'd have to somehow undo the past, and, presumably, if that
wasn't possible, try to hide the fact that you were unable to predict
the future, by deleting incriminating evidence from the user's machine
and then crashing it.

Who else is hosting the RTMPE source code?

Anyone else who would like to be added to this list, contact me via the
methods shown on my main page.  You will
be expected to indicate that you do not encourage copyright infringement.

 http://www.megashare.com/935955
 mirror (thanks seth)
 RTMPE spec (thanks zapto)
 mirror  (thanks emdx)
 mirror  (thanks phil)
 Gallery of Adobe Remedies  (thanks to Prof. Dave Touretzky)


Bittorrent sites hosting torrents for the rtmpdump v1.6 source code.
These have sprung up instantly, the moment that the slashdot article
appeared online.  Ain't ya just gotta love that "fuck you, Adobe" attitude...

mininova
sumotorrent
fulldls
btjunkie
mybittorrent
demonoid
mininova


Authoritative Opinions on Adobe's actions

Even my seven-week-old daughter is able to give her valuable and authoritative
opinion of Adobe's decision to use the DMCA to restrict Software Freedom:

Que tal compañeros

Pues les tengo unas noticias, posiblemente estaré dando un taller de Flex con Flash Media Server en la DGSCA de la UNAM. El taller se tratara de como integrar una aplicación de Videoconferencia utilizando Flex, Flash Media Server, Flash Media Encoder etc. Tocaremos conceptos como streaming de h.264, colaboración , RSOS(Remote Shared Objects) etc.

Les mantengo al tanto!

Aslında Youtube gibi bir site için FMS (Flash Media Server) kurmana gerek yok. Hatta böyle bir site için yanlış bir yaklaşım bile denebilir FMS.

Öncelikle FMS’ın dezavantajlarından bahsetmek istiyorum. FMS kullandığın zaman bir server bilgisayarına ihtiyacın var. Kendi ofisindeki bir bilgisayarı server yapman ve FMS gibi bir streaming programı yüklemen gerek. FMSnin fiyatı en son 900 dolar civarındaydı ama bu işi ücretsiz olarak yapabileceğin RED 5 gibi open-source bir program daha var. Yani FMS’a para vermek zorunda değilsin. Ama zaten konu bu değil, 900 doları verince iş bitmiyor.

Asıl kötü olan nokta; server sen olduğun için, senin upload hızın senin sistemine bağlanan bütün kullanıcılara bölünecek. Yani mesela 1024/256 ADSL bağlantın var serverında, 256 KBPS senin upload hızın oluyor. Ve diyelimki senin sisteminde 10 kişi aynı videoyu izliyor, 256/10 olarak yaklaşık 25 kbps’dan videoyu seyredebilecekler. Kullanıcılarının download hızı bu durumda önemli değil. Yani 600 Kbps bir videon varsa, bunu 10 kişinin takılmadan beklemeden seyredebilmesi için senin 6000 Kbps upload hızın olması gerekiyor. Yani youtube’daki gibi yaklaşık 600 Kbps bir videoyu 10 kişiye sorunsuz izletebilmen için 6 Mb upload hızın olması gerek. Bu da çok mantıksız ve imkansız.

FMS canlı konserler, televizyonlar gibi canlı içerik için kullanılıyor ve neredeyse küçük şirketler için imkansız. Senin asıl ihtiyacın olan Streaming Server KURMAMAN. Zaten youtube on-deman denen, streaming server kullanmayan bir yapıya sahip.

Yani FMS’i unutmalısın, tamamen senin yapmak istediğin şeye aykırı bir durum.

Mesela Youtube’a bakalım nasıl bir yapısı var. Öncelikle neden FLV kullanıyor? Çünkü FLV flash player uzantısı oluyor ve flash playeri olan herkes bu videoları görebiliyor. Flash player herkeste var. Aşağıdaki adresten de neden herkesin flash player kullandığını anlayabiliriz.. http://www.adobe.com/products/player_census/flashplayer/

Youtube bir videoyu alıyor, flv’ye çeviriyor ve server kullanmadan web sitesine (hostingine) koyuyor. Ve bir de bu flv dosyasını oynatabilmek için oynatıcıya ihtiyacı var tabi. Bu oynatıcı da basit bir video oynatıcısı. JW FLV Media Player kullanıyor youtube. Linki de http://www.jeroenwijering.com/?item=JWFLVPlayer

İstersen bakabilirsin ki youtubedaki player işte bu linkte verdiğim playerin aynısı. Yani kısaca bu demek oluyor ki youtube gibi on-demand siteler, FMS gibi streaming server kullanmıyor. Hatta mantıklarına bu çok ters.

Senin yapman gereken, basitçe elindeki videoları flv’ye çevirip web sitene yüklemen. Ve de bu ücretsiz playeri kullanarak (ticari işler için inanılmaz az ücreti var) videolarını izletmen.

Şimdi diyebilirsin ki streaming olmasını istiyorum videoların. Yani birisi play’e bastığı zaman videonun hemen başlamasını, izleyici seyrederken de arkadan yüklemesini istiyorum. Bu zaten sana FLVnin verdiği bir özellik. Bunu sağlayan FMS değil yani. FLV yaptığın herhangi bir video zaten kendi kendine stream oluyor..

Bir de şöyle bir yeni gelişme var aslında senin için avantajlı olan. H.264 diye bir kodek var Apple’ın. İnanılmaz küçük boyutlara sıkıştırıyor dosyaları kalitesini bozmadan. Adobe bu kodeği satın aldı ve Flash Player 9’da desteğini verdi. Yani Flash Player 9, H.264ü gösterebiliyor. Eğer videolarını H.264 kodeğiyle flv’ye çevirip, JW flv player ile sitene koyarsan, kullanıcılarına streaming videolar izlettirebilirsin. Flash Media Server gibi streaming servera ihtiyacın yok. Kaldı ki canlı bir videon olmadığı için zaten ihtiyacın yok.

Bir de yazından anladığım kadarıyla 10 dakikayı geçmeyecek videoların olacakmış. H.264 ile 13 dakikalık 410×328 boyutlarında bir videoyu 17 Mb’a kadar sıkıştırıp inanılmaz iyi derecede izlettirebilirsin. Hosting ve bandwith konusunu da buna göre hesaplayabilirsin.

Sana tavsiyem, JW FLV playerin sitesinde biraz gezinmen ve KBPS olayını iyice öğrenmen.

Ben şu an, çalıştığım televizyon kanalının web sitesi için youtube gibi bir video sistemini uyguluyorum. Live (canlı) yayın da veriyoruz streaming server ile fakat senin Youtube gibi bir sistem için kesinlikle streaming servera ihtiyacın yok.

http://www.mmistanbul.com/soru-cevap/action/detail/question/flash-streaming-server-ile-video-yayinlamak

Emre Telci

On Monday the 12th of January I launched a re-designed website – http://www.leedscomputerrepairs.co.uk

The idea was to make the website a more personal experience and not to bombard the user with so much information they would take one look and leave.

The target audience is the general computer user who doesn’t know much about computers and maybe experiencing problems or require a little help.

The website features a video presenter on each page, so the user can easily find out about the services offered on the website.

Each video is fully branded with the Leeds Computer Repairs mark, and are short and to the point, in order to allow the user to digest a small piece of information and then make a descision quickly.

The videos are all delivered using Flash.

The videos were created by a company called Web Video Presenters Ltd who are based in Leeds in the United Kingdom.

You can contact Web Video Presenters Ltd on 07981486168 if you require any web video content.

A website for Web Video Presenters Ltd will be coming soon.