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• How to convert a video via ffmpeg to an mp4 format that will stream and/or download to iPhone and Bl

  - by Yegor

  I have a site where people upload videos, which are converted to .flv format. Simple. I wanted to also convert to an mp4 format that will "stream" to an iphone and blackberry, or allowed to be downloaded to either, for later viewing. Can someone post a working ffmpeg line to accomplish this task? Closest I got was this (which doesn't work) ffmpeg -i in.avi -f mp4 -vcodec libx264 -maxrate 1000 -qmin 3 -qmax 5 -bufsize 4096 -g 300 -acodec libfaac -s 480x320 -ab 128k -qscale 7 out.mp4

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• iphone sdk - why is the video returned not full res?

  - by ADAM

  im developing an app for the iphone and im able to get a video using a UIImagePickerController the problem is that the video thats returned by the UIImagePickerControllerMediaURL is not full resoultion -- its only 480 x 360 as opposed to 640 x 480 like the videos that sync to my itunes. -please someone tell me this is not a limitation of the current sdk? - how can i work around it and is there a way to set the uiimage picker so its taking full res video?

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• what's wrong with concatenation in blackberry application?

  - by sexitrainer

  For the life of me, I can't understand why adding a concatenated string to the MainScreen is causing the BB simulator to throw an exception. If I run a VERY simple hello program with the following control, all is well: RichTextField rtfHello = new RichTextField("Hello There !!!"); add(rtfItemDescription); But if I add a concatenated string, the entire app breaks: String MyName = "John Doe"; RichTextField rtfHello = new RichTextField("Hello There !!!" + MyName); add(rtfItemDescription); So what am I doing wrong? Why would the simulator throw an exception for the second example?

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• Is it possible to decode an MMS+WMA2 stream using audio units on the iPhone?

  - by Nick Toumpelis

  I am not sure whether audio units can work as codecs in a streaming audio scenario on the iPhone. I've read in various places that it can be done, but I haven't seen any examples or proper documentation for that. Instead, I find that most of the apps released have utilised ffmpeg and libmms. I appreciate any help or pointers you can give me.

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• How to perform an NTLM challenge on the iPhone.

  - by toast

  I'm trying to access some web services in an iPhone application. If I GET to the .asmx page, I authenticate and get the WSDL as expected. However, if I POST to the .asmx page, setting the SOAPAction, Content-Type, Content-Length, and HTTPBody, I just keep getting didReceiveAuthenticationChallenge messages. Additionally, I'm trying to POST to IIS using Integrated Windows Authentication (IWA), which means I'm trying to negotiate an NTLM challenge.

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• Does Objective-C have garbage collector on the iPhone?

  - by user208662

  Hello, I'm thinking of writing an app for the iphone. But I'm confused in regards to the objective-c language. Am I correct in saying that I have to do my own memory management? Is Objective-C a managed language such as C# and/or Java? Thank you!

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• how to check gps singal whether is avliable on iPhone ?

  - by Robin

  as topic... I try to use the didError method , but it does not works ... if I am in room , the iPhone sdk seem insist try to got the location as it could in my app, even the value is not accurate ... how to deal with such problem ? thanks for your help in advance . Regards

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• How do I make a JQuery Slider-like feature on iPhone/Android web app?

  - by alex

  In the iPhone or Android, if you have a JQuery Slider, it doesn't quite work (touchscreen will move the screen instead of drag the slider.)

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• Can I access the keychain on the iPhone with MonoTouch?

  - by TrolleFar

  Hello, I have recently started to develop applications for iPhone with MonoTouch and have to store user names and passwords on the phone. I want to use the keychain for this but can't find anything in the MonoTouch documentation about it. Is it possible to use it directly with MonoTouch or will I have to write some C++/C/Objective-C code that uses the keychain and export it to MonoTouch?

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• Iphone newb Question - How to export information to a website?

  - by Rob

  I am a new iphone developer and was wondering if I could get some help with some code. I just want to know how to export basic character strings and variables to a website to be used by a third-party program. Basically, if I had something as basic as: int variableOne; int variableTwo; What code would I use to export these variables to a website?

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• Where can I find the xcode template for opencv on iPhone ?

  - by apple.dev

  I want to use opencv frequently for iPhone development, so if there is existing xcode template , that will save me a lot time. Also for others who have same purpose. If not, I need to do it myself. Thanks for let me know if you know.

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• iPhone 4.0 API to invoke the phone lock screen?

  - by me2

  Is there an API with the latest 4.0 SDK or earlier that allows an app to programatically invoke the iPhone's lock screen (the one that says "Slide to Unlock") ?

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• Are the iPhone media playback controls available to other applications?

  - by Comma

  what is the transparent modal window that has the playback controls in the music player (iPod) of the iPhone? how can i use it in my app?

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• Best practices to compile an iPhone app optimizing it for maximum speed?

  - by unforgiven

  I was wondering what people is doing in order to compile their iPhone applications optimizing them for maximum speed rather than size or the tradeoff speed versus size.

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• iPhone/iPad. How do I launch an app from link in Safari?

  - by dugla

  I have an app that I want to be launchable either explicitly when tapped or when a parameterized URL is clicked on on a webpage in Safari running on iPad or iPhone. Can someone sketch the approach for me and/or point me to the relevant docs? Thanks so much. Cheers, Doug

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• iPhone development: How to create colored or translucent background for UIActionSheet?

  - by Boon

  When you try deleting a note in iPhone's Notes application, an UIActionSheet pops up. The sheet is translucent (but not black translucent). How is that achieved? Is it possible to make the background of UIActionSheet a certain color?

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• SDKs disapearing when installing new versions of XCode with Iphone SDK ?!

  - by elementsense

  Hi Why are old SDKs beeing removed when installing a new version of xcode with new Iphone SDK ? Now we have v4, what settings do I have to make in order that the apps still work with 3.x ? Thanks

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• French characters in SQLite..how to display properly in iPhone app?

  - by squeezemylime

  I am working on an iPhone app using a SQLite db. I have some French characters that are not rendering properly in the app - they are being displayed as squares. The character set client is: utf8. Is there an easy fix for this?

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• For the iPhone, can you program for different languages?

  - by chiemekailo

  For the iPhone, is it possible to program applications to translate words from a base language to any of several languages of various users. If so, how?

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• [Iphone]How to get the length of one text string under one specific font with no word wrap.

  - by semix

  Hi I am new as a Iphone developer. I am wondering how to get the length of a given string under one specific UIFont, WITHOUT line word wrap. say I have a NSString* lpText = @"a unknon lenght string ..... string" //could be very long and I am using the "Times New Rome" font for rendering... Any idea? Thanks in advance.

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• Is there a way to find the state the user is in with the iphone's MapKit?

  - by rayjohannessen

  I am using the MapKit for the iPhone and have it setup to get the user's location and display it on the view. But I need to know which state they're in so I know what data to load and display to the user. Is there any way to get that sort of info?

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• What's the best way to skin my iPhone app (similar to how the Notes app is skinned)?

  - by Dr Dork

  If you look at the Notes app on the iPad, you can see it uses all native iPhone controls, but they're "skinned" to look like a pad of paper. What's the best way to implement something similar to that? Could I use interface builder and simply change the background image for each of the controls, including the TableViews? Thanks in advance for all your help! I'm going to continue researching this question right now.

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• Using lattitude and longitude of the current location and destination location , how can we get the direction in iphone

  - by ratnasomu

  Hello Everyone , I am working in 1 iphone app where we need to show the direction from 1 place to other place That is from current location in which direction (N or E or W or S or NE or NW or SE or SW ) the destination is . I know how to get the directions from 1 place to another place but I am searching for showing the direction . Is my problem clear ? If any one know how to do it , Pleae help me Thanks every one!

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• How do I draw lines and rectangles on the iPhone?

  - by Rajendra Bhole

  I would like to draw a line and rectangle in my iPhone application. How would I go about doing this? Are there any tutorials I should read?

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• How to display a view before the main view controller in iphone?

  - by Warrior

  I am new to iphone development.I have created a view based application and created many features in it.The main view controller is kept as the landing page where displays the icons.Now i want to show a view before the landing page for "register feature".How can i do that? please help me out.Thanks.

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