I tired to googling that how share videos form camera roll in windows phone 8 like in Nokia video upload and facebook app. I used to try this http://msdn.microsoft.com/en-us/library/windowsphone/develop/ff967563(v=vs.105).aspx
Only share picture but I want to share only videos for my app e.g. when my app show in list when share a video by camera roll of windows phone in sharing
To quote the link you included in your question:
Note that this extensibility is only available when the photo is a JPG file.
And from my experience, I can confirm that it is not possible to register your app as a share target for a video file.
In other words, if a user tries to share a video from the camera roll or another app, there is no way to make your app appear as one of the options in that list.
Did you try using the share media task function?
Check this article out from the msdn : http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj207027(v=vs.105).aspx
You can use MediaLibrary and there is already an answer for your question in this link. As said, there is no way to select existing sound media and video files through default choosers. Thank you.
