I’ve been using B2Evolution for a number of years. There are a couple of things that have bugged me about it, although not enough to sell my soul and switch to evil Word Press.
When writing blog posts there are a set of buttons in the middle which link to editing actions. WYSIWYG which switches the editor from text to rich text, Preview which opens a new window to give you a preview of the work so far, Save & edit which saves the page and re-presents the page (handy for saving work in progress), Save which saves the page but sends you back to the list of all the pages, and finally Publish! which puts the page live, visible to your fans and sends out pings to various article distribution centres.
My articles can take months or years to write depending on how much research I need to do. They are proof read and checked for accuracy and may under go a couple of rewrites before finally publishing them. I want to make sure the content I produce is of the highest quality. The Save buttons are so close to the Publish! button so occasionally I click it by mistake. Normally there’d be nothing wrong with doing that but there’s a bug in B2evolution that means it only sends the pings once on publish. However if it was a mistake and I return the article to draft status then next time I publish it won’t send out any pings. This is especially bad because the fresh publish has a new date and my urls are in a date dependant form (
/yyyy/mm/dd/name-of-article). The pings that went out earlier are no longer valid because they point to an address that doesn’t exist.
The Publish! button is redundant anyway because one can change the status with the same effects by setting the Visibility / Sharing section to Published (Public).
Version 5 of B2evolution has addressed this issue, with options to allow (or disallow) various buttons on the edit screen. They’ve said they are not going to retro fit this feature into version 4 so I thought I’d let you know how to do it by editing the application source code. It’s quite simple, we’re just hiding the button using the cascading style sheets.
- Search for display: inline
- Change it to display: none
- Save the file
Easy! Good job you had the source code !
Ever since Quantel created a Windows Installer for it’s ISA Manager it has become really easy to install and upgrade it. This article will take you through installing and setting up the ISA Manager with 3 Dummy Servers to play with. The Dummy Servers have the same CORBA interface as the Quantel sQ servers and behave like them too. You can record rushes, create clips, clone between servers and do all the normal stuff; the only difference is that there’s no real pictures.
The latest ISA Manager is available on the Quantel web site or through your account manager. The installer only works on Windows.
- Right-click on the
ISAManager-setup-Vx.x.x.xexecutable and select Run as administrator.
- Click Next to get passed the welcome screen.
- Click I agree to accept the user agreement.
- On the Database Configuration->Passwords screen accept the default passwords. This defaults to root for the user name and the host name in lower case for the password. Then click Next to move on.
- From the Select the type of install drop down select Install Master. You will see all the components which will be installed. You can not alter this selection. Click Next.
- Accept the defaults for the Start Menu shortcuts’ location, then click Next.
- On the Database configuration->Language screen choose the language collation you would like for the database. Collation determines text sort ordering which ties in with using different character sets. Leave it on
utf_general_ciif you are not sure.
- Uncheck the I am at Quantel checkbox. This feature can only be used in combination with the ISA Manager source code and a host of debugging tools. For you it will just slow things down, so click Next to continue.
- On the Database configuration->Configuration screen choose Plug-n-play Dummy Server Configuration. This will install sample data for dummy servers within a dummy zone. Click Next after you make your selection.
- Accept the default of 2096 for the IOR port. This is the HTTP port that is used to deliver the IOR string. This value is largely obsolete because the ISA Manager runs a cut down web server which also delivers the IOR string over the standard port 80. Just accept the default and click Next.
- Depending on your region your system will need to be PAL/625 or NTSC/525, so make your selection on this screen and click Next.
- This is a new installation and not a Legacy system so just accept the defaults for this screen and click Next.
- We don’t want to be a Sequence master either. You would only use this if you are installing front end editors as well, which you are not.
- Finally click Install.
The next article will be an instructional guide to running the ISA Manager and Dummy Servers. We will look at how to use the ISA controller to record a clip, create a sub clip, search for them, then play them out through a Dummy Server and finally deleting them.
In order to drive the Quantel Broadcast system you need to compile the CORBA Interface Definition Language (IDL) file into a language of your choice. There are many CORBA IDL compilers out there: JacORB (Java), OmniORB (Python), TOA (C++), IIOP.NET (.NET) and there’s a more complete list on the Object Management Group’s web site.
- ZonePortal - main driver module, metadata, searching, space allocation, copying media, organising running orders, registering listeners.
- ThumbnailListener - generate thumbnails from video media.
- StateChangeListener - receive callback notifications on status changes.
- Server - control of playout and ingest storage servers.
- Port - object representing a video port.
- PortListener - callbacks relating to Port status changes.
This article just covers compiling the IDL into your language of choice: coding fun comes later! Due to the amount of IDL implementations there are this will have to be a cut down guide limited to the languages I deal with. I’ll start with JacORB for Java. I might do Python if there’s time.
- Go to the JacORB web site’s download page.
- At the time of writing this article the latest version was 3.0rc1.
- We are not interested in compiling JacORB from source so download the Binary version.
- Use 7-zip to uncompress it, so now we have a folder called
- Place the
Quentin.idlin the top level folder
- There isn’t an installer as such because the package assumes that you have downloaded the source code and are compiling from scratch. So to avoid downloading and installing all sorts of supplementary requirements we are just going to frig the file we need to make it work.
D:\blog\jacorb-3.0rc1\bin\idl.batand change the classpath:
- Almost there! Now we need to open a command window and go to the
d:\blogfolder where the
jacorb-3.0rc1\bin\idl.bat -all -genEnhanced -d src -i2jpackage Quentin:com.quantel.quentin Quentin.idl
- This will compile the IDL into the target language, creating a folder called
srcin the current directory which contains all the
com.quantel.quentinpackage source code.
- Now we have the source, we can compile.
- The Java compiler, is frankly a pain in a arse, so if anyone knows a better way of doing this then please leave a comment.
dir /s/b src\**.java > src.txt
javac -d bin -cp “jacorb-3.0rc1\lib\jacorb.jar” -sourcepath src -g @src.txt
- Finally we need to package all that compiled code into a Java Archive (Jar) for easier access.
jar -cf quentin.jar -C bin .
- This will produce a file called
quentin.jarin your current folder (
That’s it! We will use the quentin.jar in combination with the jacorb.jar to create our application to drive the Quantel Broadcast system.
Next lesson - obtaining the IOR and connecting to the ZonePortal.
Quantel develops innovative, world-leading content creation systems for broadcast, post and DI. We are driven by a passion to create the most powerful and efficient tools for the digital age. Quantel technology means business; our systems combine industry-leading performance with total scalability to enable productive workflows for post production, graphics, digital intermediate and news/sports production.
One of Quantel’s unique selling points is that the storage system is highly efficient; no 2 frames are stored twice in their patented technology called FrameMagic. A huge advantage of this is when you are versioning, that is producing a version of the film for the UK market and then another version for the Japanese market. All the pictures for both versions of the film are only held once. The bits of film that are unique are held separately and are seamlessly stitched together to produce 2 versions. So the same film versioned for 10 countries’ laws will only occupy the same storage space of one and a little bit’s worth of storage space. This is unlike most of the competitor systems where it will occupy 10 times the space. The advantages don’t stop there! If you want to copy the 10 versions from the edit server to the playout or archive server then The Quantel System manages the copy ensuring that no to frames are copied twice, so copying the 10 versions will be 10 times quicker than an equivalent file based storage system. Cool!
One can use the Quantel Server system to record video, copy it between servers, create new clips from recorded rushes, search for media, add tagging information to rushes (which follow the media around, in and out of edits) and all sorts of other video and audio related functions. Quantel exposes it’s Application Programmer Interface (API) so that anyone can control the Quantel server system. This interface is used by lots of automaters to schedule records, making back ups, housekeeping, etc. The API is written using CORBA which is basically a convenient way of passing objects around a network, it’s similar to RMI (Java only) or COM (Windows only).
This article will join together a series of articles on how to get the most from the Quantel IDL to control the worlds most powerful video editing system.
If you can’t wait and you want to get started straight away then I’m available for consultancy, just drop me a line. No application too small, no language too difficult*.
Set up and using a test system
- Installing a Quantel ISA Manager with DummyServers for test development
- Simple instructions for recording a clip using Quantel Dummy Server
- Compiling the Quantel’s quentin.idl
- Obtaining the IOR and connecting to the ZonePortal
- Coming Soon: Searching for clips in a zone using CORBA, updating their properties and deleting them.
- Coming Soon: Registering a CORBA listener and receiving clip and server event notifications.
- Coming Soon: Cutting a clip in half, reversing the parts and joining them back together as a new clip.
- Coming Soon: Recording a new clip.
Note: Now that I’m freelancing full time the articles won’t be “coming soon". I don’t want to give away all my secrets!
* provided there is an IDL complier available for that language.
Full transcript of the a television advertisement on the BBC for their coverage of politics, with the tag line: Everything is Politics. Making politics make sense..
Politics doesn’t really effect us does it? Oh, apart from the cost of our heating; and the fat content of our food; how often our streets are cleaned; the minimum wage, the maximum wage; cycle lanes, care homes, first homes, Sherlock Holmes, oh and the air we breathe. Yeh, apart from all that!