iOS 6.0.1 can't play video on WIFI - objective-c

I have iPhone 4 and iPad with 6.0.1, and I have a little app ive created which let you capture a short video, 30 seconds max, and upload it to my server. When Im trying to access the video, I can't open it. I see a "play" button with a line on it, so it says I can't play it.
The wired thing is that I tried to play the video while I'm on 3G and not on WIFI, and it worked.
I've tried using mp4, m4v, m4a, mov, and nothing works.
I don't have any problem with my router and any other videos app like YouTube or opening video from Facebook - works.

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When I connected to the conference everything was okay but after a while, maybe 10 seconds camera stopped and in the browser URL field, the camera icon next to the URL changed to the microphone. in this step, the video will be frozen and after maybe a 10-second the microphone will be stopped.
I have no problem with Chrome or Firefox, but I have it just in the safari.

JWplayer with HLS video not playing on Android Devices

I am using JWplayer to stream a video that is hosted on Amazon S3, but it won't play on Android devices.
It works fine on PC, Mac and iPhones/iPads.
I have tested with Firefox, Google Chrome and Safari.
I have no idea to what could be wrong and I would really appreciate any input.
The link to the page where the video plays is this: https://ead.starlingacademy.com.br/

Mp4 wont play on iphone / ipad

I own a VPS server running CentOS with Cpanel WHM where no one can watch videos i post on Iphones / Ipads.
For example take this video http://content.bitsontherun.com/videos/bkaovAYt-364766.mp4
that video is not hosted on my server and plays fine on iphones when watching it on that website. BUT if i download that mp4 file and upload it to my own server, anyone with any iphone or ipad cant watch that video on my own server. however they can watch it on a PC or Android phone/tablet without a problem. i have not changed the file in any way. It plays fine on a PC or android phone / table but not Ipad and iphone
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Sublime video - Can't play video, Your browser can't play video using HTML5

I used Sublime Video player to embed .mov, .mp4, and .mp3 files on a project I worked on a few months ago. It all used to work perfectly. I went back to this project this morning and the player mentions "Can't play video, Your browser can't play video using HTML5" and I can't play some of the videos/podcasts anymore. Some videos don't play either on my site or on "Publish video" interface provided on the Sublime video website (seems to be a MIME issue), some play in the "Publish video" interface, but not on my local machine or live environment.
Did something change recently? Why am I having this problem now?

How to keep html5 video from allowing display to sleep on OSX

I have a webpage with html5 video displaying an HLS video in Safari on OSX. When I click the full screen button the video plays in full screen, but the screen dims according to my OSX display settings after 1 minute of being idle, no keyboard or mouse interaction.
This does not happen if I play an mp4 video file from the local disk directly using Quicktime in full screen. In this case Quicktime is doing something to tell OSX not to listen to the idle-timeout.
My question is how can I make the html5 video page keep the screen from idle-dimming while playing the video in full screen on OSX (or any platform, if possible)?
The issue has been fixed in safari 5.1.4. Release notes are available here.
Fix an issue that could cause the screen to dim while watching HTML5 video