I’m learning to use Xcode, following the instructions, I made a small player, as a first experience was very interesting, with satisfactory results.

I only have this one, I can not solve, given the lack of experience, I would like to bring up a Label (TextField) movie filename and the total time (duration) of the movie. I looked at the manual and searched online, but I did not find acceptable solutions.

Have you any advice and / or solution on how to solve my problem.

My compliments for the article, having started just found it very good.

I thank you very much

Sorry about that. I missed that when I was cleaning up the code. It needs to be removed. Originally I was going to keep an NSArray of all of the images and save them out in a batch. Decided against that idea, but I guess I missed removing that line. Thanks and I’ll fix the project file ASAP.

-Matt

@synthesize movie; @synthesize time; @synthesize images; @synthesize outputPath;

Perhaps the synthesize-ation of images is wrong. It only compiles without it.

Here’s my answers.

1. You’re right. It’s not used correctly there. Sorry about that. I could provide a lock that all NSOperations use since they are all going to be grabbing their images from the same QTMovie object, however, in this case the QTMovie data is never changing. All threads are only reading from it. It’s probably best to synchronize even when it’s only reads, however, I’m probably not going to fool with it for this example. ;-)

2. I guess the short answer is that I wasn’t familiar with it. But now I am. Thanks for that.

I’ll fix the code and the sample app as soon as I get a chance.

Best Regards.

-Matt

1) It looks like you’re creating a new lock for every NSOperation. If that’s the case, what exactly is the lock doing? If each thread has its own lock, then it seems the lock has no effect.

2) Is there a reason you’re not using the path-related NSString methods (e.g. stringByAppendingPathComponent) when constructing your image filename? It would seem that this would simplify things (rather than appending a / and then appending the filename, for instance).