Capturing images while record button clicked in ios simultaneously - ios

Iam using UIImagePicker to record video when i click the record button i want to capture the frame with sound and add it into one array .Please help me to accomplish the same thanks in advance .


try this sample code for record videos in frame
customphotoalbum
Edit
- (void)video:(NSString*)videoPath didFinishSavingWithError:(NSError*)error contextInfo:(void*)contextInfo {
NSLog(#"%#",contextInfo);
if (error) {
}else{
NSURL *videoURl = [NSURL fileURLWithPath:videoPath];
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoURl options:nil];
AVAssetImageGenerator *generate = [[AVAssetImageGenerator alloc] initWithAsset:asset];
generate.appliesPreferredTrackTransform = YES;
NSError *err = NULL;
CMTime time = CMTimeMake(1, 60);// heare you can set more then one image time
CGImageRef imgRef = [generate copyCGImageAtTime:time actualTime:NULL error:&err];
self.strUploadVideoURL = videoPath;
self.strOriginalVideoURL = videoPath;
UIImage *img = [[UIImage alloc] initWithCGImage:imgRef];
// use this image to add in array.
}
}

Related

How do I get NSArray of images from a video? Vice-versa is possible

It is possible that I can play video from NSArray of images. But how can I get NSArray of images from a video?

You can use this code to make image from Video and later you can save those image in a array
UIImage *singleFrameImage = [self.theMoviePlayer
thumbnailImageAtTime:i
timeOption:MPMovieTimeOptionExact];

To get a image from your video use this sample.
First import AVFoundation
#import <AVFoundation/AVFoundation.h>
Create the NSURL from your video.
NSString *videoUrl = #"http://download.wavetlan.com/SVV/Media/HTTP/MP4/ConvertedFiles/Media-Convert/Unsupported/test7.mp4";
NSURL *url = [NSURL URLWithString:videoUrl];
Prepare the asset.
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:url options:nil];
AVAssetImageGenerator *generate = [[AVAssetImageGenerator alloc] initWithAsset:asset];
generate.appliesPreferredTrackTransform = YES;
Select the time to cut: e.g. In second 2 for 1 second.
CMTime time = CMTimeMake(2, 1);
Get the ImageRefference and the Thumbnail.
NSError *error = nil;
CGImageRef imageRef = [generate copyCGImageAtTime:time actualTime:nil error:&error];
UIImage *thumbnail = [[UIImage alloc] initWithCGImage:imageRef];
Set your image to some UIImageView .
[self.imageView setImage:thumbnail];
The Sample shows this image

Objective-c, Is there any way fetch video thumbnail from URL instead using MPMoviePlayerController and AVAssetImageGenerator?

I want to fetch video thumbnail from URL instead using MPMoviePlayerController and AVAssetImageGenerator. Because these have some issue. Issue I have already asked,
1st one is : AVAssetImageGenerator not working properly, I am unable to fetch thumbnail of video from URL
and 2nd is : https://stackoverflow.com/questions/32431311/mpmovieplayercontroller-not-fetching-thumbnail-of-video-from-url-properly
I have no idea how to do it. Any suggestion will be great. Thank in advance !!!

All you need is to put into comment below your URL and self.imageView.image = FrameImage;
Anyway.
NSString *str=#"https://scontent.cdninstagram.com/hphotos-xfa1/t50.2886-16/11719145_918467924880620_816495633_n.mp4";
NSURL *url=[[NSURL alloc]initWithString:str];
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:url options:nil];
AVAssetImageGenerator *generator = [[AVAssetImageGenerator alloc] initWithAsset:asset];
generator.appliesPreferredTrackTransform=TRUE;
NSError *error = NULL;
CMTime thumbTime = CMTimeMakeWithSeconds(0,30);
CGImageRef refImg = [generator copyCGImageAtTime:thumbTime actualTime:NULL error:&error];
if(error) {
NSLog(#"%#", [error localizedDescription]);
}
UIImage *FrameImage= [[UIImage alloc] initWithCGImage:refImg];
[self.imageView setImage:FrameImage];

Try this one.
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:[NSURL URLWithString:#"[video URL]"] options:nil];
AVAssetImageGenerator *generateImg = [[AVAssetImageGenerator alloc] initWithAsset:asset];
NSError *error = NULL;
CMTime time = CMTimeMake(1, 65);
CGImageRef refImg = [generateImg copyCGImageAtTime:time actualTime:NULL error:&error];
NSLog(#"error==%#, Refimage==%#", error, refImg);
UIImage *FrameImage= [[UIImage alloc] initWithCGImage:refImg];

Getting thumbnail from a video url asynchronously - iOS

There are lot of example codes for getting thumbnail from a video url. But all of them I tried are NOT generating the image asynchronously. So, when it comes to multiple videos in a tableview, app freezes. Please help me to make this thumbnail asynchronously.
-(UIImage *)generateThumbnailIconForVideoFileWith:(NSURL *)contentURL WithSize:(CGSize)size
{
UIImage *theImage = nil;
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:contentURL options:nil];
AVAssetImageGenerator *generator = [[AVAssetImageGenerator alloc] initWithAsset:asset];
generator.maximumSize=size;
generator.appliesPreferredTrackTransform = YES;
NSError *err = NULL;
CMTime time = CMTimeMake(100,100); //change whatever you want here.
CGImageRef imgRef = [generator copyCGImageAtTime:time actualTime:NULL error:&err];
theImage = [[UIImage alloc] initWithCGImage:imgRef] ;
CGImageRelease(imgRef);
return theImage;
}

You can also use MPMovieplayerfor generating thumbnail
MPMoviePlayerController *player= [[MPMoviePlayerController alloc]initWithContentURL:Videourl];
self.imgshow.image = [player thumbnailImageAtTime:5.0 timeOption:MPMovieTimeOptionNearestKeyFrame];
[player stop];

thumbnail of a video on clicking video file in iOS simulator

I have a video in gallery. on clicking it tries to open,but instead of that i want to show a thumbnail of video in uiimageview.

AVURLAsset *asset;
if ([url isFileURL]) {
asset = [[AVURLAsset alloc] initWithURL:url options:nil];
}
AVAssetImageGenerator *gen = [[AVAssetImageGenerator alloc] initWithAsset:asset];
gen.appliesPreferredTrackTransform = YES;
CMTime time = CMTimeMakeWithSeconds(0.0, 600);
NSError *error = nil;
CMTime actualTime;
CGImageRef image = [gen copyCGImageAtTime:time actualTime:&actualTime error:&error];
UIImage *thumb = [[UIImage alloc] initWithCGImage:image];
UIImage *finalThumpnailImage = [HPLUtility createThumpnailImageFromTheImage:thumb]; //Resized image.
CGImageRelease(image);
return finalThumpnailImage;

AVAssetImageGenerator not generating Image from Video url

I am using AVAssetImageGenerator for generating the thumbnail images for video play buttons.
When i pass server video url to generate image it is retuning null.
AVAsset *asset = [AVAsset assetWithURL:url];
AVAssetImageGenerator *imageGenerator = [[AVAssetImageGenerator alloc]initWithAsset:asset];
CMTime time = CMTimeMake(51,1);
CGImageRef imageRef = [imageGenerator copyCGImageAtTime:time actualTime:NULL error:NULL];
UIImage *thumbnail =[[UIImage alloc]initWithCGImage:imageRef];
CGImageRef cgref = [thumbnail CGImage];
CIImage *cim = [thumbnail CIImage];
if (cim == nil && cgref == NULL)
{
NSLog(#"no underlying data");
}
CGImageRelease(imageRef);
Always i am getting null data.rarely i am getting only one image.
How can i solve this problem.

You can try the following code. Its working for me
AVURLAsset *as = [[AVURLAsset alloc] initWithURL:url options:nil];
AVAssetImageGenerator *ima = [[AVAssetImageGenerator alloc] initWithAsset:as];
NSError *err = NULL;
CMTime time = CMTimeMake(0, 60);
CGImageRef imgRef = [ima copyCGImageAtTime:time actualTime:NULL error:&err];
[ima release];
UIImage *currentImg = [[UIImage alloc] initWithCGImage:imgRef];
And i got a reference is that the easiest way is to just set the appliesPreferredTrackTransform property on the image generator to YES, then it should automatically do the transformation for you.
Hope this helps !!!

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