Question

As you know,play a movie with MPMoviePlayerController object using

[[MPMoviePlayerController alloc] initWithContentURL: aURL];

now ,i want to achieve a custom NSURLProtocol in which i will decrypt a movie source that had be encrypt by AlgorithmDES.
Is that possibility? thanks for giving any ideas.need you help~

Answer 1

UPDATE: I spoke to Apple about this and it’s not possible to use MPMoviePlayerController with a NSURLProtocol subclass at the moment!

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Hej,

I am not sure but it could be possible. I am currently working on something similar but haven’t got it fully working. What I have found out is that MPMoviePlayerController interacts with my custom NSURLProtocol subclass BUT it seems to be important to take the HTTPHeaders of the NSURLRequest into account because they define a range of bytes the MPMoviePlayerController needs.

If you dump them in your NSURLProtocol subclass you will get something like this twice for the start:

2011-01-16 17:00:47.287 iPhoneApp[1177:5f03] Start loading from request: {
Range = "bytes=0-1";

}

So my GUESS is that as long as you can provide the correct range and return a mp4 file that can be played by the MPMoviePlayerController it should be possible!

EDIT: Here is a interesting link: Protecting resources in iPhone and iPad apps