avasset

I am trying to go through each frame in an AVAsset and process each frame as if it were an image. I have not been able to find anything from my searches. The task I am trying to accomplish would look like this in pseudo-code for each frame in asset take the frame as an image and convert to a cvMat Process and store data of center points Store center points in array The only part in that pseudo-code I do not know how to write is the going though each frame and capturing it in an image. Can anyone help? One answer is to use AVAssetImageGenerator . 1) Load the movie file into an AVAsset object. 2

i know duration of video type questions have been answered before but i am facing real trouble in getting duration of an .mp4 file by using AVAsset and by AVURLAsset . i am using Following code NSString *itemPathString = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0] stringByAppendingPathComponent:obmodel.actualname]; NSURL *itemPathURL = [NSURL URLWithString:itemPathString]; if([[NSFileManager defaultManager] fileExistsAtPath:itemPathString]){ NSLog(@"File Exists"); } AVAsset *videoAsset = (AVAsset *)[AVAsset assetWithURL:itemPathURL];

These is the beginning o a method I am using to merge videos together -(void) mergeVideosAndAudio:(AVAsset *)audioAsset{ //Load Video Assets NSError *error; NSArray *dirFiles; if ((dirFiles = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[self documentsDirectory] error:&error]) == nil) { // handle the error }; // find all the temp files NSArray *movFiles = [dirFiles filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self BEGINSWITH 'temp'"]]; NSLog(@"The are %i temp files",movFiles.count); //Create assets array NSMutableArray *assets = [[NSMutableArray alloc]init]; for

I'm doing the following: Create a new AVAsset with a given URL. That URL points to a video on a remote web server. Attempt to load the tracks property by calling loadValuesAsynchronouslyForKeys:completionHandler: The initial request fails, because no internet connection exists I notice that the request failed by calling statusOfValueForKey:error: I then wait for the connection to re-appear (using some reachability code). As soon as it does, I call loadValuesAsynchronouslyForKeys:completionHandler: again. Here's where the problems begin. I would imagine that the AVAsset goes ahead and attempts

Here is link on github https://github.com/spennyf/cropVid/tree/master to try it out your self and see what I am talking about it would take 1 minute to test. Thanks! I am taking a video with a square to show what part of vid will be cropped. Like this: Right now I am doing this of a piece of paper with 4 lines in the square, and half a line difference on top and bottom. And then I crop the video using code I will post, but then when I display the video I see this (Ignore background and green circle): As you can see there are more than four lines, so I am setting it to crop a certain part but

I am trying to trim a video to 5 seconds programmatically. Here is my implementation. AVAssetExportSession exportSession= new AVAssetExportSession(videoAsset,AVAssetExportSession.PresetLowQuality.ToString()); int SystemVersion = Convert.ToInt16(UIDevice.CurrentDevice.SystemVersion.Split('.')[0]); string filename; if (SystemVersion >= 8) { var documents = NSFileManager.DefaultManager.GetUrls(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomain.User)[0].Path; filename = Path.Combine(documents, "trimmed.mov"); } else { var documents = Environment.GetFolderPath(Environment.SpecialFolder