Setting up the Roku device and Roku SDK on an RTMP Server

Get your Roku running and associate it with an online Roku account.
In your online account, sign up for the developer program, and then download the Roku SDK (Software Development Kit) and unzip RokuSDK.zip.
Navigate to the Packaging Your Application section of the Roku SDK documentation, and then follow the instructions to set up a DevID and Password. These credentials are used when packaging your application before uploading to a channel.
Unzip the RokuSDK/examples/zips/simplevideoplayer.zip example and edit the simplevideoplayer/source/appMain.brs file as follows:
1. Comment out the following lines using an apostrophe (‘) character:’urls = [“https://video.ted.com/talks/podcast/CraigVenter_2008_480.mp4”] ‘qualities = [“HD”] ‘StreamFormat = “mp4” ‘title = “Craig Venter Synthetic Life” ‘srt = “file://pkg:/source/craigventer.srt”
2. Uncomment and modify the following lines so that the urls line matches the one below:’ a test stream from Wowza urls = [“https://11234566777778.streamlock.net:1937/8XXX/mp4:video.mp4/playlist.m3u8”] qualities = [“SD”] streamformat = “hls” title = “my video file” srt = “”Note: To play your own content, change the urls value to the playlist URL of your content.
Select all files in the simplevideoplayer folder and compress these files (not the folder itself) into a zip file to upload to the Roku box.
Follow the Run the package Utility instructions in the Packaging Your Application section of the Roku SDK documentation to upload your package zip file and register your application to the Roku player. After successfully uploading the application to the Roku box, the application will show up as a channel.

After completing these steps, a prompt to run your application appears on your Roku box. After the application is running, you can refer to the Roku SDK documentation for information on how to set up a private channel and make it accessible to users to subscribe to it.

For more information, I suggest you contact the RTMP server, which has years of experience running Stream to Roku using RTMP Server for streaming.

RTMP Server in the era of HTTP video streaming

Given the growing popularity and support of HTTP video streaming, it may be tempting to consider Real Time Messaging Protocol (RTMP) streaming obsolete. But in many cases, working with RTMP server is still very meaningful. As soon as Macromedia first pronounced RTMP with Flash Player 6 in 2002, the brand new Macromedia Flash Communication Server MX (FCS) required to stream the evolving Flash Video (FLV) format, stream was live or VOD.

However, for FCS, licensing costs were high (up to $5,000 per server), and as a result, CDN costs were high than other proprietary streaming formats. Some manufacturers in the industry have called RTMP streaming costs a “Flash tax”. But Flash Player has been a ubiquitous introduction to desktop browsers for well over a decade, much larger than other plug-ins. Though, streaming server technology has traditionally been harder for web developers to implement, and simpler HTTP delivery has mostly been easier and more cost-effective. In 2003, Macromedia enabled Flash Player 7 to support HTTP delivery of FLV files, allowing integrators to use standard web server technology to deploy online video.

So in many ways, RTMP as a VOD transport delivery has not been a requirement for web video for more than a decade. As a video solution architect, I think of business requirements as the leader in most audio video decisions. And still, in 2014, RTMP is the de facto standard for the following use cases:

Publishing live streams from software/hardware encoders: Almost all streaming devices support RTMP to publish to CDN providers and streaming servers. Some native mobile applications also use RTMP libraries to publish live video from their mobile camera.

Near-instant search/playback: One of the benefits of RTMP streaming is its enhanced search capability. With real-time streaming, the player can search anywhere in the video with less buffering than HTTP delivery. However, to enjoy this feature, you need a Flash Player on your desktop and as such, it is not possible in mobile browsers. HTML5 browsers use HTTP domain requests to facilitate faster searching of VOD files.

Content Protection: RTMP Server can facilitate different levels of content protection, from obfuscation to true DRM. RTMP streams are not stored for playback on a desktop browser.

Adaptive Streaming: One of the preferred uses of RTMP is adaptive streaming playback, where we provide the video player with more bitrates and content resolutions, providing the best resolution at the current network speed. Some HTTP adaptive streaming technologies, such as HLS and MPEG-DASH, allow similar delivery, but RTMP may be more responsive to switching one bitrate to another. Unfortunately, there is no standard for HTTP adaptive streaming between HTML5 video-enabled browsers. As such, the Flash-based display of adaptive streaming is still a requirement for adaptive streaming.

Live Streaming Playback: While live streams do not need to be adaptive, compressed video segments apply the same principle to all live streaming playback. For desktop playback within the browser, virtually every live streaming event requires a video player that supports Flash-based rendering and RTMP playback. Apple Safari on iOS natively supports HLS, and luckily, all modern streaming servers, including the Wowza Streaming Engine, support RTMP and HLS compression.

The requirement for a Live Streaming Flash Player will only change if MPEG-DASH appears everywhere as Flash currently. If Internet Explorer 8, 9 and 10 support is required to install live streaming, then RTMP streaming is still required. Also, if you need a delay close to zero in a live stream, then HTTP streaming will almost certainly not meet your needs while RTMP is capable; HTTP mechanisms require that multiple packets be collected on the server before being sent to the video player.

In summary, if your video workflow involves live streaming or any kind of packaged video installation, RTMP is the key to a successful video experience. HTTP delivery has already replaced most Flash VOD installs on video, but HTTP video can’t handle all RTMP video use cases.

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Which is better for live streaming, RTMP vs HLS

In summary, you cannot build a live streaming product/platform just based on rtmp stream as it does not address your maximum device coverage agenda.

RTMP – Low latency TCP-based protocol originally built for Flash

HLS – Proprietary Apple-backed protocol that is widely supported on many environments.

MPEG-Dash – Webstandard but carries the same faults as HLS

Both HLS & MPEG Dash are kind of medium to high latency protocols although there is scope to play with different latencies.

WebRTC – Low latency protocol, built on open standards works in almost all browsers. However it is not supported on several environments/browsers Viz. iOS, IE

In summary, you cannot build a live streaming product/platform just based on rtmp stream as it does not address your maximum device coverage agenda.

My recommendation is to use a combination of http based (HLS/MPEG-DASH) & rtmp server for input from the broadcaster and then the hls for the output to a HTML5 player, like this you have all protocols for building your solutions.

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testing a player

Trying to test if a player code is easy to embeb on a wordpress post.

the player was generated at

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red5 hosting

Red5 is a media server created with Java language. It is a free open source software but recently a new version Red5 Pro came out developed by the same people, this new version supports streaming to mobiles, Android or iOS, which red5 does not. The Red5 Pro is commercial product and costs $55 per server.

A media server allows Flash based applications connect to it using Real Time Messaging Protocol (RTMP). The server can send and receive data to and from the connected users who have a flash player installed. The server also allows users to receive and publish streams. This permits video chat applications, live streaming and even ondemand video streaming.

Most common Video chat software’s are:
1- Avchat
2- Videowhisper
3- Prochatrooms
4- Gchats

For live streaming the necessary tool if you already have a server with red5 installed is an encoder, an encoder is the software that will connect your computer to the red5 server using the RTMP, which your server provider will give you.
1- FMLE, it is an free Adobe product and does a good job.
2- Wirecast, it is an expensive commercial product of very high quality, absolutely necessary if you starting a TV station.

Although red5 is a free product many people prefer to use Wowza Streaming Engine or Adobe Flash Media Server which are commercial software’s and can be quite expensive, the FMS costs $4500 per server. The reason is that the developers of red5 although have created a wonderful system did not spend much time with tutorials and instructions on how to install and manage a red5 server, for this reason if you searching for a red5 server we suggest you pick a web host which specializes on red5 servers and red5 shared hosting.

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Red5 is a formidable media server, extremely flexible and has the advantage of being a free product with with many people working on developing it, for now the main version does not yet work with mobiles, if that is what you need we suggest that instead of using the Red5 Pro version to use the Wowza instead.

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red5 out of memory exception

I’m trying to analyze heap dump of my application which is made when out of memory exception occurred.
I have video on demand application on red5 1.0.1 Final server and Flash client which is written in AS 3 and communicate with server through RTMPT

Why so much messages is accumulated in RTMPTConnection.pendingOutMessages ? See attachments for details.

any custom functions or config?

Piotr

no custom configs. What do you mean when talk about functions?

Well what does you app do exactly, perhaps you start some process that never finishes?

Can you post the custom configs (a diff file of compared to the originals) ? Now I’m not an expert on red5, but it would help to solve your issue by some of the smart folks in this group.

Cheers,

Piotr

May be this exceptions lead to memory leak? I found them in my log.
Also I found in profiler than org.red5.server.net.rtmpt.RTMPTConnection instances are never terminated after I close flash player or close browser tab. Their count grows.org.red5.server.net.protocol.ProtocolException: Error during decoding
at org.red5.server.net.rtmp.codec.RTMPProtocolDecoder.decode(RTMPProtocolDecoder.java:195) ~[red5-server-1.0.jar:na]
at org.red5.server.net.rtmp.codec.RTMPProtocolDecoder.decodeBuffer(RTMPProtocolDecoder.java:116) ~[red5-server-1.0.jar:na]
at org.red5.server.net.rtmpt.BaseRTMPTConnection.decode(BaseRTMPTConnection.java:195) ~[red5-server-1.0.jar:na]
at org.red5.server.net.rtmpt.RTMPTServlet.handleSend(RTMPTServlet.java:336) ~[red5-server-1.0.jar:na]
at org.red5.server.net.rtmpt.RTMPTServlet.service(RTMPTServlet.java:419) ~[red5-server-1.0.jar:na]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) ~[javaee-api-5.1.2.jar:5.1.2]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:891) ~[tomcat-coyote-6.0.36.jar:6.0.36]
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:750) ~[tomcat-coyote-6.0.36.jar:6.0.36]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2282) ~[tomcat-coyote-6.0.36.jar:6.0.36]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_25]
at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]
Caused by: java.lang.IllegalStateException: Invalid RTMP state: 5, nothing to decode
at org.red5.server.net.rtmp.codec.RTMPProtocolDecoder.decode(RTMPProtocolDecoder.java:189) ~[red5-server-1.0.jar:na]
… 21 common frames omitted

java.lang.NullPointerException: null
at org.red5.server.net.rtmpt.BaseRTMPTConnection.read(BaseRTMPTConnection.java:204) ~[red5-server-1.0.jar:na]
at org.red5.server.net.rtmpt.RTMPTServlet.handleSend(RTMPTServlet.java:341) ~[red5-server-1.0.jar:na]
at org.red5.server.net.rtmpt.RTMPTServlet.service(RTMPTServlet.java:419) ~[red5-server-1.0.jar:na]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) ~[javaee-api-5.1.2.jar:5.1.2]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) ~[catalina-6.0.36.jar:6.0.36]
at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:891) ~[tomcat-coyote-6.0.36.jar:6.0.36]
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:750) ~[tomcat-coyote-6.0.36.jar:6.0.36]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2282) ~[tomcat-coyote-6.0.36.jar:6.0.36]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_25]
at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]

Between 1.0.1 and 1.0.2 (trunk) the encode/decode and connection handling were overhauled; I would suggest trying the latest red5 with your application as all known memory leaks have now been fixed.

This bug was reproduced on 1.0.2. I’ll try use version 1.0. It is likely more stable. Bug is reproduced after 3 hours of playing live video in flash player. Flash player was crashed after that (due to unknown issue) and soon OOM appears.

I can confirm this bug exists in red5 1.0.1, red5 1.0.2 and not exists in red5 1.0.0.

Reproducing steps:

1. Install demo version of YourKit java profiler.

2. Run red5 with command line arguments:

-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=”C:\path” -agentpath:”C:\Program Files\YourKit Java Profiler 2013 build 13052\bin\win32\yjpagent.dll”

3. Connect to your red5 with YourKit

4. Provide any live streming to red5 (I’ve used ffmpeg)

5. Start playing live stream in browser (I’ve used Chorme) from red5.

6. Suspend process of browser (I’ve used Sysinternals Process Explorer). That action results in adobe flash plugin crashes.

7. Look at Yourkit->Memory->Class list. Type RTMPTConnection in search string and push Refresh many times. You can see that size of RTMPTConnection.PendingData constantly increases.

I made 3 snapshots of memory: https://dl.dropboxusercontent.com/u/14792156/Out_of_memory_snapshots.7z

Screenshot of RTMPTConnection instance: