How to displaying thumbnail images of .mov for UITableView cells in IOS

Question

hi im very new to ios i have read books beginner books and intermediate books, i understand ios put there are certain things i cant get done. im trying to put a thumbnail image of a .mov video into a cell like the youtube app i figured out how to do the thumbnail into UIImageView

NSString *videoPath = [[NSBundle mainBundle] pathForResource:@"e.mov" ofType:nil];
NSURL *videoURl = [[NSURL alloc ] initFileURLWithPath:videoPath];
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoURl options:nil];
AVAssetImageGenerator *generate = [[AVAssetImageGenerator alloc] initWithAsset:asset];
generate.appliesPreferredTrackTransform = YES;
NSError *err = NULL;
CMTime time = CMTimeMake(0.0, 600);
CMTime actualTime;

CGImageRef imgRef = [generate copyCGImageAtTime:time actualTime:&actualTime error:&err];

UIImage *img = [[UIImage alloc] initWithCGImage:imgRef];
[self.myImageView setImage:img];

thats what i have done to get the thumbnail image to the UIImageView on a standard UIViewController, i just cant figure out how to do it in a UITableViewCell *cell;

I have 18 videos i want to display in the cells as thumbnails and once the cell is touched prepareForSegue: method is activated then it goes to the detailViewCOntroller

NSString *videoPath = [[NSBundle mainBundle] pathForResource:@"e.mov" ofType:nil];

How do i make this a NSMutableArray and put it in

NSURL *videoURl = [[NSURL alloc ] initFileURLWithPath:videoPath];

and make it work in cells

basically i cant figure out how to display an array of videos as thumbnails in cells please help

what is that you want, you are saying that you cannot set the image in a cell. create a UIImageView and set it as subview of the cell. — gaurish.salunke, Feb 04 '14 at 10:06
try if this works for you. http://stackoverflow.com/a/19530997/3251886 — gaurish.salunke, Feb 04 '14 at 10:10
i dont now how to put a thumbnail image of the video into an array so i can display them into the cell — user2257386, Feb 04 '14 at 10:46
my code works that i put here im able to display a single video as a thumbnail in an UIImageView now im trying to figure out how to display it in cells so i can display all 18 of my videos as an array to the cell — user2257386, Feb 04 '14 at 10:49
in the 'cellForRowAtIndexPath' create a UIImageView object. Set the thumbnail image to the UIImageView and set this imageview obj as subclass to cell - [cell.contentView addSubView:imageViewobj]; — gaurish.salunke, Feb 04 '14 at 10:52
UIImageView *img1 = [[UIImageView alloc] initWithImage:img]; cell.thumbnailImageView.image = img1; — user2257386, Feb 04 '14 at 11:21
cell.thumbnailImageView.image = [cell.contentView addSubview:image]; — user2257386, Feb 04 '14 at 11:33

Rajesh Loganathan · Answer 1 · 2014-02-05T06:57:35.213

0

Try this:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
   static NSString *CellIdentifier = @"Cell";
   UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier   forIndexPath:indexPath] ;

   AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoPath options:nil];
   AVAssetImageGenerator *generate = [[AVAssetImageGenerator alloc] initWithAsset:asset];
   CMTime time = CMTimeMake(1, 30);
   CGImageRef thumbImg = [generate copyCGImageAtTime:time actualTime:NULL error:&err];


   if (cell == nil)
   {
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
   }
   cell.imageView.contentMode = UIViewContentModeScaleAspectFit;
   cell.imageView.image = [UIImage imageWithCGImage:thumbImg];
   return cell;
}

edited Feb 05 '14 at 06:57

answered Feb 04 '14 at 11:41

Rajesh Loganathan

11,129
4
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where do i put this in cellForRowAtIndexPath – user2257386 Feb 05 '14 at 06:11
@user2257386 : Where you need to display image. if need to display in each cell means see cellForRowAtIndexPath in your table view code.. – Rajesh Loganathan Feb 05 '14 at 06:45
i put it in but nothing comes up in the cell just plain – user2257386 Feb 05 '14 at 08:20
do i use NSURL to get path cause i did and nothing happens – user2257386 Feb 05 '14 at 08:33
NSString *vidPath; to NSURL *vidURL; – user2257386 Feb 05 '14 at 09:16
thanks so much it worked after i set the delegates and datasource – user2257386 Feb 05 '14 at 09:35
if your problem solved means you can upvote and accept solution. it will helps others to identify solution for these kind of issue in future. – Rajesh Loganathan Feb 05 '14 at 10:05

score 0 · Answer 2 · edited May 23 '17 at 12:21

0

Here it is... get screenshot first frame of the video

- (UIImage*)loadImage {

    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:vidURL options:nil];
    AVAssetImageGenerator *generate = [[AVAssetImageGenerator alloc] initWithAsset:asset];
    NSError *err = NULL;
    CMTime time = CMTimeMake(1, 60);
    CGImageRef imgRef = [generate copyCGImageAtTime:time actualTime:NULL error:&err];
    NSLog(@"err==%@, imageRef==%@", err, imgRef);

    return [[UIImage alloc] initWithCGImage:imgRef];

}

edited May 23 '17 at 12:21

Community

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answered Feb 04 '14 at 11:43

Mahe

98
1
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yeah now how do i put all the video thumbnails into an array to display in the cells – user2257386 Feb 05 '14 at 06:12

How to displaying thumbnail images of .mov for UITableView cells in IOS

2 Answers2