本文实例为大家分享了ios视频录像切成缩略图的具体代码,供大家参考,具体内容如下
记得导入系统库
#import < mediaplayer/mediaplayer.h >
代码:
/** * 获取网络视频的全部缩略图方法 * * @param videourl 视频的链接地址 * * @return 视频截图 */ + (uiimage *)ihefe_previewimagewithvideourl:(nsurl *)videourl { avasset *asset = [avasset assetwithurl:videourl]; avassetimagegenerator *generator = [avassetimagegenerator assetimagegeneratorwithasset:asset]; generator.appliespreferredtracktransform = yes; cgimageref img = [generator copycgimageattime:cmtimemake(1, asset.duration.timescale) actualtime:null error:nil]; uiimage *image = [uiimage imagewithcgimage:img]; cgimagerelease(img); return image; } /** * 获取本地视频的全部缩略图方法 * * @param fileurl 视频的链接地址 * * @return 视频截图 */ + (uiimage *)ihefe_getscreenshotimagefromvideourl:(nsstring *)fileurl { uiimage *shotimage; //视频路径url nsurl *fileurl = [nsurl urlwithstring:fileurl]; avurlasset *asset = [[avurlasset alloc] initwithurl:fileurl 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]; shotimage = [[uiimage alloc] initwithcgimage:image]; cgimagerelease(image); return shotimage; } /** * 获取视频的某一帧缩略图方法 * * @param videourl 视频的链接地址 帧时间 * @param time 帧时间 * * @return 视频截图 */ + (uiimage*)ihefe_thumbnailimageforvideo:(nsurl *)videourl attime:(nstimeinterval)time { avurlasset *asset = [[avurlasset alloc] initwithurl:videourl options:nil]; nsparameterassert(asset); avassetimagegenerator *assetimagegenerator = [[avassetimagegenerator alloc] initwithasset:asset]; assetimagegenerator.appliespreferredtracktransform = yes; assetimagegenerator.aperturemode = avassetimagegeneratoraperturemodeencodedpixels; cgimageref thumbnailimageref = null; cftimeinterval thumbnailimagetime = time; nserror *thumbnailimagegenerationerror = nil; thumbnailimageref = [assetimagegenerator copycgimageattime:cmtimemake(thumbnailimagetime, 60) actualtime:null error:&thumbnailimagegenerationerror]; if (!thumbnailimageref) nslog(@"thumbnailimagegenerationerror %@", thumbnailimagegenerationerror); uiimage *thumbnailimage = thumbnailimageref ? [[uiimage alloc] initwithcgimage:thumbnailimageref] : nil; return thumbnailimage; }
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