video editing library in IOS

Question

I am looking for a video editing library in IOS.

Editing tasks: -> Adding text or marks on top of the video frame.

In my application user should be able to select a video from video library and also play the video in a movie player. And user able to pause the video then add some text or marks using free hand. we need to merge added text and marks in this video.

Answer 1

AVFoundation will do all that and more. The user interface for the app is, of course, up to you. But all the video manipulation is quite simple to implement using this powerful, built-in library.

Read about AVFoundation here.

Answer 2

you can use GPUImage for your task. for set image and text use this code..

contentView.backgroundColor = [UIColor clearColor];

UIImageView *ivTemp = [[UIImageView alloc] initWithFrame:CGRectMake(20, 20, 147, 59)];
//    UIImage *currentFilteredVideoFrame = [selectedFilter imageFromCurrentFramebuffer];
ivTemp.image = [UIImage imageNamed:@"minimumtrackimage"];
ivTemp.userInteractionEnabled = YES;
[contentView addSubview:ivTemp];


UILabel *lblDemo = [[UILabel alloc] initWithFrame:CGRectMake(0, 100, 200, 30)];
lblDemo.text = @"is this text on video?";
lblDemo.font = [UIFont systemFontOfSize:30];
lblDemo.textColor = [UIColor redColor];
lblDemo.tag = 1;
lblDemo.hidden = YES;
lblDemo.backgroundColor = [UIColor redColor];
[contentView addSubview:lblDemo];




GPUImageUIElement *uiElementInput = [[GPUImageUIElement alloc] initWithView:contentView];
[uiElementInput addTarget:selectedFilter];
__unsafe_unretained GPUImageUIElement *weakUIElementInput = uiElementInput;
[weakUIElementInput update];

and then write the movie.