I want to save video to my app document from asset url. My asset url is as follows:-
"assets-library://asset/asset.MOV?id=1000000394&ext=MOV"
I tried this:-
NSString *str=@"assets-library://asset/asset.MOV?id=1000000394&ext=MOV";
NSData *videoData = [NSData dataWithContentsOfURL:[NSURL URLWithString:str]];
[videoData writeToFile:mypath atomically:YES];
but on the second line [NSData dataWithContentsOfURL:[NSURL URLWithString:str]] i got program crash with this reason:- Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSURL length]: unrecognized selector sent to instance
I want to know how to access asset video url.
Thanx for any help.
I think your best bet is to use the method
getBytes:fromOffset:length:error:
of
ALAssetRepresentation
You can get the default representation of an asset like so
ALAssetRepresentation *representation = [someVideoAsset defaultRepresentation];
So off the top of my head it should go something like this (I'm away from my Mac so this hasn't been tested)
ALAssetsLibrary *assetLibrary=[[ALAssetsLibrary alloc] init];
[assetLibrary assetForURL:videoUrl resultBlock:^(ALAsset *asset) {
ALAssetRepresentation *rep = [asset defaultRepresentation];
Byte *buffer = (Byte*)malloc(rep.size);
NSUInteger buffered = [rep getBytes:buffer fromOffset:0.0 length:rep.size error:nil];
NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES];
[data writeToFile:filePath atomically:YES];
} errorBlock:^(NSError *err) {
NSLog(@"Error: %@",[err localizedDescription]);
}];
Where videoUrl is the asset url of the video you're trying to copy, and filePath is the path where you're trying to save it to.