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Below is the slideshare of the presentation (@GDG Tel Aviv Presentation – Aug 19 2013) I just gave at the GDG Tel Aviv. Many thanks to the GDG organizers for inviting me to give a talk and for the fantastic audience that had so many interesting discussion points Always fun to present at my home town! [slideshare id=25484366&doc=gdgtelavivpresentation-130822073059-phpapp01] The presentation slides are pretty elaborate, – feel free to ping me for any questions or if you want Read more...

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I’m delighted, excited, thrilled and psyched to share these awesome news If you don’t know what CLS is, check this about page, the official CLS wiki and this post and this one and that one.. and definitely watch these videos! So, the exciting news eh?.. We are hosting the first Community Leadership Summit in New York City on September 21! CLS is an unconference for those interested in discussing, debating and exploring the many avenues of building strong community. The event Read more...

SendGridPostfixRat

I often launch CentOS images on ec2, specifically the RightImage_CentOS_6.3_x64_v5.8.8.5_EBS (ami-3b7bfc52). It’s a great clean CentOS image if you need to run tests or install Kaltura on a clean machine. A common requirement is to have an email sending service, preferably postfix that will be stable and handle long queues of emails (to support for email notifications or alerts). According to this thread on the AWS forums, mainly to block spam, ec2 servers are by default blocked from Read more...

We spend a good amount of time on our #kaltura freenode channel during the day, staying in touch with other community developers, assisting others or simply chatting in a more collaborative environment than Skype… This weekend I decided it’s time to retire our old PHP based IRC bot (bit of server cleanup), and replace it with a newer more maintained bot… A quick search and playing with several bots around including two PHP based bots (@,@), a node.js one and two python Read more...

grep for files in a folder

I’ll just put here for future reference: This grep will search recursively across all files in a given path. 04f90b392114559f9faf0113a91f26c5012 Notes: Replace the dot at the end with the top-folder to search in. Remove the lower case ‘i’ to make the search case-sensitive. Remove F if searchterm is a regular expression. Shout-out: How to use “grep” command to find text including subdirectories To run a search only for folder or file name, use the following. Only Read more...

A few months ago I switched to Mac, tired of the back-pain I had from carrying a heavy (and ugly) Lenovo laptop that had 40% the computing power of my current MacBook Air. So lately I’ve been learning the ways of the mac, and being the cygwin user that I was, I felt at home with the OS X’s Terminal (I use iTerm). Interesting things that you find while cruising the web searching for OS X tips and tricks. Today, I came across this post from OSXDaily discussing a Mac OS X (10.5+) Read more...

Lotts docs out there, some are better than others, but most are a bit confusing. Just dropping this here for potential future need… The 2 best I came across are: http://www.akadia.com/services/ssh_test_certificate.html http://www.tc.umn.edu/~brams006/selfsign_ubuntu.html/ I found that steps 1-4 in the first guide are easy to follow and will work well to generate your keys. Then follow the second guide to enable SSL on your Apache and set things up. For easier review: Step 0: Install Read more...

That took some time to figure out… I’ve tried at least 6 different articles from the top Google results, none worked and most were outdated. Anyways, no commitment here either, it worked for me, but I’m no Debian expert.. so use at your own risk. First – Add the new multimedia packages - 04f90b392114559f9faf0113a91f26c5039 Add the following lines: 04f90b392114559f9faf0113a91f26c5040 Install all the dependancies and build tools Read more...

Often (or not) you might come across the need to download a video from a site you don’t own (e.g. someone uploaded an interview of you), but they use an RTMP server to stream their video. This neat tool will go to the URL of the page hosting the video player, load the page in a mini-browser screen, wait till you click play and… dump the video to a file. RTMPExplorer. Based on RTMPdump (and you’ll actually need to download RTMPdump to the same folder of RTMPExplorer to make Read more...

FizzBuzz Methods Tests

This little “poor-developer filter” was discussed and solved many times. Despite the number of discussions it spur, and the many suggested ways to solve the problem, the question regarding which solution would be the most efficient, remained unclear. Maybe because its original goal was to screen “bad” developers rather than actually solve the problem efficiently or demonstrate creativity. It was also said that during an interview, solving the problem in more Read more...

Need a quick, easy and free way of cleaning up a video’s audio from background noise? Follow the steps below. First get and install the tools: FFMPEG. SoX – Sound eXchange. Then clean your noise! Split the audio and video streams into 2 seperate files: The VIDEO stream: ffmpeg -i input.mp4 -sameq -an tmpvid.mp4 The AUDIO stream: ffmpeg -i input.mp4 -sameq tmpaud.wav  Generate a sample of noise from the audio of the file: ffmpeg -i input.mp4 -vn -ss 00:00:00 -t 00:00:01 Read more...

  An app I wrote needed the following features: Application has to run in the browser as a SWF. Application will run in filesystem mode (file://). Application will not have server side (except for YouTube). Application will have to login to YouTube using ClientLogin instead of AuthSub to avoid redirects. Application will have to upload a manipulated ByteArray, not directly from FileReference.browse(). First thing you do: Search Google for YouTube+Upload+ActionScript, which brings up Read more...

Been a while now since I’ve last opened my Adobe Flex Builder and wrote some AS3… Working on the  Gendered Advertising Remixer a while ago, made me curious again about whether it will be possible to merge the video & audio channels of given FLVs in run-time on the client-side (in AS3). So I’ve decided to take a few hours this weekend to add a download option to the GAR : ) At Kaltura, we’ve used to do this server side for creating video remixes. The video Read more...

Many thanks to StreamingMedia.com for inviting Michael and me to speak about HTML5 and our adventures with creating the Kaltura HTML5 Media library. Now that Streaming Media Europe and West HTML5 Media Workshops are over (and that I’m back home), as promised, here are the slides and some answers to common questions. Slides: HTML5 Streaming Media West Workshop 2010 This post is about the current state of HTML5 Media, links to resources about the Kaltura HTML5 Media Library, Read more...

Re-iterating what took too long (couple of hours) to pinpoint and solve. Getting ImageMagick (Imagick) installed on XAMPP 1.7.3 has it right there and clear, If you want to get Imagick installed on XAMPP 1.7.3, you’d need to: Install the LATEST OFFICIAL version of ImageMagick from http://www.imagemagick.org/script/binary-releases.php#windows . (I first tried installing the one from http://image_magick.veidrodis.com/image_magick/binaries/ specified in the post above, didn’t work Read more...

Coming from the Flash world, where the community has a voice and there’s a name & address assigned for every complaint – existing state of things with HTML5 as an Open Standard just doesn’t make much sense. True, Flash wasn’t that visible – but, they (MM/Adobe) still made sure to listen and improve upon the community’s demand, keep a system. Flash is truly cross-platform “write once deploy all” solution that just works, there are great Read more...

Register by August 1st for early bird rates! About OVC The Open Video Conference (OVC) is a multi-day summit of thought leaders in business, academia, art, and activism to explore the future of video on the web. Join us October 1-2 for two days of learning and inspiration. And stick around for the OVC hack labs, presented in partnership with NYU ITP. Who’s coming to OVC? Connected creatives, technologists and businesspeople of all stripes. Over 100 open source projects. Read more...

This year, I am thrilled to be flying to OSCON for; 1. I will be speaking on a panel along with two fascinating and very experienced developers + we’ll be talking about the hottest topic discussed today, and 2. It’s my first time in Portland, Oregon the home of free speech and microbreweries. HTML5′s Multimedia Future – A panel lead by my colleague Jason Levitt featuring Mark Pilgrim from Google, author of Dive Into HTML5 and yours truly. This is super exciting! Not Read more...

At the Frankfurt airport, waiting for the delayed flight back home… J and Beyond turned out to be one of the greatest community events I experienced. The venue – A distant monastery, 20 minutes drive far from a large city, Jesus picture and a bible on every room, pictures of priests on the main hall walls.. typical for a place named after a bishop – Wilhelm Kempf. + the place had a very slow internet connection. It felt weird. After a couple of hours the first few people Read more...

Yesterday I arrived in Wiesbaden Germany for the first international Joomla developers conference – J and Beyond. First day is over and it has been a wonderful day of meeting lot’s of interesting Joomla experts from private and large web development agencies, self employed consultants and the founders and project leaders behind Joomla. I’m not too experienced with Joomla, however getting to know the guys at this conference, I can say a lot of talent can be found among this Read more...

You can find below the recordings from the first meeting of the Google Technology User Group in Tel Aviv. Presentations - JavaScript Programming Patterns – Zohar Arad. View video on iPhone / iPad. Android 101 & Droid Security – Dror Shalev. View video on iPhone / iPad. Django AppEngine Based Platform Building Site – Alon Burg. View video on iPhone / iPad. Introduction to Google Closure – Ariel Kroszynski (Demo App). View video on iPhone / iPad. Enjoy! – Read more...

Happy to share my experience last week from the first Tel Aviv Google Technology User Group meetup. It was a fun evening with great people and featured interesting lectures about web development (python, Google AppEngine, JavaScript) and Android programming. This meetup was jointly organized with PyWeb-IL, another great Israeli user group focusing on Python and Django. GTUG TLV, is a new group dealing with web development and particularly Google technologies (and there are quite a bit). The Read more...

Past Sunday we had the 5th WebiTalks meetup. This time about Security in Flash Applications and Games. It was very interesting to see that at the same time we announced the meetup, two interesting debates about tweaking, changing and winning online Flash based games using various sniffing techniques started at Flashoo, the Israeli Flash community forums (Security in Flash games tests, Memory access tweaking). To summarize the meetup, it was a fun & pleasant meetup with 30 attendees Read more...

As a (technology & web) community activist that has organized quite a bit of events and activities I can testify, the trickiest step of organizing a meetup or event is with finding the right place. The venue that will be sexy, fit the type of event, be equipped with fast internet and presentation & sound system and will hold as many people you’ll have, occasionally few dozens, once in a while a few hundreds, and once or twice a year even more. The work we’ve done over the Read more...

Another great event in Israel this month. By @Orli and @Resnicke, an entrepreneurial type of event, and you can really feel it in the air – with the right mix of interesting people, awesome ideas and companies, VCs and great demos. Techonomy featured 7 great Israeli startups this year – amazing levels of innovation. Four specific I was impressed by: Omek Interactive, a 3D camera (depth-sensing) based software solution for media centers and gaming, similar to Microsoft’s Read more...

It’s an exciting time indeed for Flash Platform developers in Israel. As the market grow and we see the demand for Flash & Flex Developers increasing quickly. The Flashoo Community (User Group) is a forum of the leading Flash and Flex Developers in Israel, entrepreneurs and team leaders utilizing the Flash Platform. Flashoo holds regular events and meetups to connect the Flash developers in Israel, provide free training, share ideas and solutions and create opportunities – Read more...

Hi! Check out the About section to learn more about this piece of the web. This website will be used as an online log for many ideas I just need to dump or things I may find of value. You’re welcome to poke around, take what you want and mash it up… /Zohar Read more...