在哪里保存AVAssetWriter的输出-iOS

Question

I'm following some examples of how to compress a video to reduce file size prior to uploading it to a server. Specifically, I've looked at this question here: How can I reduce the file size of a video created with UIImagePickerController?

However, I'm wondering where the best place to save the output is.

Even the AV foundation programming guide only provides this as an example:

NSError *outError;
NSURL *outputURL = <#NSURL object representing the URL where you want to save the   video#>;
AVAssetWriter *assetWriter = [AVAssetWriter assetWriterWithURL:outputURL
                                                  fileType:AVFileTypeQuickTimeMovie
                                                     error:&outError];
BOOL success = (assetWriter != nil);

Again, looking for some guidance on exactly where it is I want to save the video!

Cheers, Brendan

Answer 1

This is documents directory URL, just append your filename:

[[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];

Almost the same for all others: library ( NSLibraryDirectory )

Answer 2

You can write file in document directory using below code

defile document directory path

NSString *DocumentsDirectoryPath() {NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsDirectoryPath = [paths objectAtIndex:0];return documentsDirectoryPath;}

and then

NSURL * outputURL = [NSURL fileURLWithPath:[DocumentsDirectoryPath() stringByAppendingPathComponent:@"yourfilename.mp4"]];

here mp4 is your file extention.