Upload big video from PhotoLibrary to server - ios

Question

I have a problem with uploading big video asset to a server from PhotoLibrary.
I get my asset data as described here, export the video to local document, and then upload.
But when I upload a big video (2 minutes and about 300Mb or more in size), this method causes a crash and I got no reason nor any any information.
I use webDAV to upload files just like this:
// Set up credentials
NSURLCredential *userCredentials = [NSURLCredential credentialWithUser:username
password:password
persistence:NSURLCredentialPersistenceForSession];
NSURLProtectionSpace *space = [[NSURLProtectionSpace alloc] initWithHost:host
port:80
protocol:#"http"
realm:#" webDAV"
authenticationMethod:nil];
[[NSURLCredentialStorage sharedCredentialStorage] setCredential:userCredentials forProtectionSpace:space];
[space release];
// Create the request
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"PUT"];
[request setValue:[self mimetypeForFile:self.filepath] forHTTPHeaderField:#"Content-Type"];
NSNumber *contentLength = (NSNumber *) [[[NSFileManager defaultManager]
attributesOfItemAtPath:self.filepath error:NULL]
objectForKey:NSFileSize];
[request setValue:[contentLength description] forHTTPHeaderField:#"Content-Length"];
if (self.useStreaming)
{
if (self.currentFileStream!=nil)
{
[self.currentFileStream close], self.currentFileStream = nil;
}
self.currentFileStream = [NSInputStream inputStreamWithFileAtPath:self.filepath];
if (currentFileStream!=nil)
{
[request setHTTPBodyStream:currentFileStream];
}
else
{
[request setHTTPBody:[NSData dataWithContentsOfFile:self.filepath]];
}
}
else
{
[request setHTTPBody:[NSData dataWithContentsOfFile:self.filepath]];
}
NSURLConnection* conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if (self.currentConnection!=nil)
{
self.currentConnection = nil;
}
self.currentConnection = conn;
[conn release];
[self.currentConnection start];
When the code reache this line:
self.currentFileStream = [NSInputStream inputStreamWithFileAtPath:self.filepath];
[request setHTTPBodyStream:currentFileStream];
OR:
[request setHTTPBody:[NSData dataWithContentsOfFile:self.filepath]];
It crashed.
Do you have any suggestion?
Thanks.
========================
Edit: It crash at setHTTPBody: OR setHTTPBodyStream:
So I think it's about memory leak or something.
================
EDIT2: Now I decide to compress video, I get video data by current method is too large(more than 300mb)， But I find use UIImagePickerController select the same video, it just 30mb； So compress is help; I'll try UIVideoEditorController, and will post my result soon;

Answer 1

Completed. the solution is try to compress big video to small file;
1.just like before, export video asset to tmp directory;
2.use UIVideoEditorController to compress the video file;
3.just upload compressed file like the code I post.
That's all.

Answer 2

check following post , where i am uploading image on server, instead of image you can post your video Uploading Image via POST in Objective C