How to change the default person in the inbuilt simulator in Spark AR Studio? - spark-ar-studio

As seen in F8 developer conference, there was the option to select from 5-6 different person to be used as sample in the inbuilt simulator in Spark AR studio. Where to find the option?

V78 if you are using older version it could be different(don't use them)

You can add your own videos too as long as they are in .webpm format
Just tap on the plus sign

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Implement Realtime Barcode Scanner on Windows Phone 8.1 Runtime using ZXing and MFT

I'm working on a Windows Phone 8.1 Runtime shopping application which needs barcode scanner feature. I'm using the ZXing lib, which is fine. My problem isn't about decoding the picture, ZXing does a great job, but to get the Camera Preview realtime, and feed it to ZXing. After a little research I found this forum https://web.archive.org/web/20150328233747/http://developer.nokia.com/community/discussion/showthread.php/247707-Windows-Phone-8-1-Windows-Media-Capture-API-and-Preview-Frames. Can someone give me a working sample of combining an MFT and ZXing? Or how can I get the preview and handle it in my C# code?
My project is close to the deadline, so please help me out!
Right now the barcode scanning is really messy, I have a "Scan" UI button, which calls the MediaCapture.CapturePhotoToStreamAsync method, but that's not a good solution. I need realtime, automatic scanning.
Thank you!
I finally found a solution. I Microsoft engineer, Matthieu Maitre, hacked together something very useful. The main purpose of his project was "Apply image effects from the Nokia Imaging SDK and DirectX HLSL pixel shaders to videos in Universal Store Apps..". He had an "effect" called "QrCodeDetector", which I tried out and worked, but was really slow. So I asked him if he could enhance the effect, and in two days he updated the nuget package, and it works, and it is lightning fast now: https://github.com/mmaitre314/VideoEffect#realtime-video-analysis-and-qr-code-detection

Windows Phone 8 Getting list of all time zones

I want to get the list of all time zones that are listed in the Date+Time settings in my windows phone app. How can i do this. Kindly help.
You can't enumerate time zones like you did previously in plain ole c# apps:
TimeZoneInfo.GetSystemTimeZones()
You can however, use this NuGet package : https://www.nuget.org/packages/WinRTTimeZones

Convert Windows Phone 8 Beta to Public?

I developed some apps for Windows Phone (conversion from other plattforms) and when I finally wanted to upload the apps, I saw this BETA-Feature. You can upload your app and test it in real environment. Sound Great.
Now I have seen all the bugs in this process:
First of all, it seems I cannot convert this app if it is working properly to published app?
I have to crate a new app and I have to re-Enter all the descriptions in all languages and re-upload all screenshots?
Next big problem: I cannot re-use the app name? WTF? My app names are now reserved for these BETA-Apps?
What can I do? I want to convert the apps from BETA to PUBLISHED? Not possible? I have to RE-ENTER ALL INFORMATION IN ALL LANGUAGES? I have to re-upload EVERY Screenshot for EVERY language? I have to use a different name? Is this really the only possibility?
On MSDN you can find the description of the beta testing. So, the answer is yes, you need to reinput all data for the production version. In order to use application name in the production release, you can unpublish and delete your beta app. Then you can use its name.
In my own experience, I didn't add much information for the beta distribution. Also, I added suffix BETA to the app, which is in beta distribution. So beta testers can recognize the build.

voice based translation from one language to another in windows phone os

My project is to do a translator based on the voice only .The user need to give the input in the form of voice in their native language. Then the system need to produce the translation in the user preferred language. The problem for is the i don't know how to set the voice recognition in different language . please help me. thanks in advance i am doing this in windows phone 8 .
There are APIs for Windows Phone, but you will need to use two to accomplish what you are trying to do. First, you need to use the speech recognition to convert the speech to text. Then, run this through the Microsoft Translator to translate to another language. Note that for the speech recognition, you should query for the appropriate speech recognizer for the language that is spoken.
See the following links:
Speech Recognition
Microsoft Translator
There's an example here of how to build the Windows Phone 8 app for Translator:
http://blogs.msdn.com/b/translation/p/windowsphone8.aspx
You could use this with voice-captured instead of text-entered input.

Listing Web Cam Properties using Win RT

I am developing the metro style application using Win RT.
I Need to List the Properties of Web Cam Like Frame rate ,Size and format it supports .
A web Cam Can Support multiple Frame rate ,Size and format, I wanted to list all of it.
I am exploring Windows Runtime Reference but couldn't figure out the Api which will give those information.
Any Help will be appreciated!
Windows.Media.Devices.VideoDeviceController has a GetAvailableMediaStreamProperties method which returns supported formats. The rest isn't built into WinRT yet, but it you can bet will. It's just not there yet.