如何获取URL的缩略图我的视频网址如下
http://ServerDomain/streams/16476084045/3d4659d8e93bdfbdb3619a4a684c93be.flv
我正在使用以下代码
AVURLAsset *asset1 = [[AVURLAsset alloc] initWithURL:url options:nil];
AVAssetImageGenerator *generator = [[AVAssetImageGenerator alloc] initWithAsset:asset1];
generator.appliesPreferredTrackTransform = YES;
//Set the time and size of thumbnail for image
NSError *err = NULL;
CMTime thumbTime = CMTimeMakeWithSeconds(0,30);
CGSize maxSize = CGSizeMake(425,355);
generator.maximumSize = maxSize;
CGImageRef imgRef = [generator copyCGImageAtTime:thumbTime actualTime:NULL error:&err];
UIImage *thumbnail = [[UIImage alloc] initWithCGImage:imgRef];
cell.videoImage1.image=thumbnail;
但我收到的错误
Error Domain=AVFoundationErrorDomain Code=-11828 "Cannot Open" UserInfo={NSUnderlyingError=0x7fe8d3057900 {Error Domain=NSOSStatusErrorDomain Code=-12847 "(null)"}, NSLocalizedFailureReason=This media format is not supported., NSLocalizedDescription=Cannot Open}
我没有使用MPMoviePlayer 如何获取缩略图请帮助我.Thankyou。
答案 0 :(得分:2)
使用以下代码,
AVAsset *avAsset = [AVURLAsset URLAssetWithURL:videoURL options:nil];
if ([[avAsset tracksWithMediaType:AVMediaTypeVideo] count] > 0)
{
AVAssetImageGenerator *imageGenerator =[AVAssetImageGenerator assetImageGeneratorWithAsset:avAsset];
Float64 durationSeconds = CMTimeGetSeconds([avAsset duration]);
CMTime midpoint = CMTimeMakeWithSeconds(durationSeconds/2.0, 600);
NSError *error;
CMTime actualTime;
CGImageRef halfWayImage = [imageGenerator copyCGImageAtTime:kCMTimeZero actualTime:&actualTime error:&error];
if (halfWayImage != NULL)
{
NSString *actualTimeString = (NSString *)CFBridgingRelease(CMTimeCopyDescription(NULL, actualTime));
NSString *requestedTimeString = (NSString *)CFBridgingRelease(CMTimeCopyDescription(NULL, midpoint));
NSLog(@"Got halfWayImage: Asked for %@, got %@", requestedTimeString, actualTimeString);
UIImage *img=[UIImage imageWithCGImage:halfWayImage];
self.myimageView.image= img; //img is thumbnail image ;
}
}
不要忘记#import <AssetsLibrary/AssetsLibrary.h>
标题文件
以上代码对我有用,希望对您有所帮助