In my new application i need to download video from different-different web sites, Say it is video downloader application. For this what i am planing is Searching html for .mp4 and .Flv url and then trying to downloading videos. There are many app already doing same
http://itunes.apple.com/in/app/video-downloader-super-lite/id481701140?mt=8
What i am asking is, how can we download video? Any code or link or something. how this application work ? Any Help will really appreciate.
what i needed is when you open a page in UIWebview Say you open "www.youtube.com" and select a video to play then it ask to download. For download i need URL (Embeded url, Flv url, mpv url) so i can paas this to function. I need to know about That URL
If you are able to use the AFNetworking library, it's pretty simple. You can make an HTTP request and use its outputStream property to download the file to your device. Say you hook up a download button to a function downloadVideoFromURL:withName:
- (void)downloadVideoFromURL:(NSURL*)url withName:(NSString*)videoName
{
//filepath to your app's documents directory
NSString *appDocPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *videosPath = [appDocPath stringByAppendingPathComponent:#"Videos"];
NSString *filePath = [videosPath stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.mp4", videoName]];
//check to make sure video hasn't been downloaded already
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
//file was already downloaded
}
//video wasn't downloaded, so continue
else
{
//enable the network activity indicator
[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
//create a temporary filepath while downloading
NSString *tmpPath = [videosPath stringByAppendingPathComponent:[NSString stringWithFormat:#"%#-tmp.mp4", videoName]];
//the outputStream property is the key to downloading the file
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:tmpPath append:NO];
//if operation is completed successfully, do following
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
//rename the downloaded video to its proper name
[[NSFileManager defaultManager] moveItemAtPath:tmpPath toPath:filePath error:nil];
//disable network activity indicator
[AFNetworkActivityIndicatorManager sharedManager].enabled = NO;
//optionally, post a notification to anyone listening that the download was successful
[[NSNotificationCenter defaultCenter] postNotificationName:#"DownloadedVideo" object:nil];
//if the operation fails, do the following:
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"error: %#", error);
//delete the downloaded file (it is probably partially downloaded or corrupt)
[[NSFileManager defaultManager] removeItemAtPath:tmpPath error:nil];
//disable network activity indicator
[AFNetworkActivityIndicatorManager sharedManager].enabled = NO;
}];
//start the operation
[operation start];
}
}
if you really want to go for hacking , you you will get apple's private library, "webkit" , if you try to find the subviews of UIWebview, it might help you, i never tried it, but you can test with this logic.
Related
Even though it looks like a simple procedure, it's by now 3 hours I'm trying without success. I am probably missing something really stupid.
So, I have this app downloading videos from the Internet. The videos are correctly stored locally because I can play them providing the local url. But, I can't succeed in copying the videos to the camera roll. Here is what I do:
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
ALAssetsLibraryWriteVideoCompletionBlock videoWriteCompletionBlock =
^(NSURL *newURL, NSError *error) {
if (error) {
NSLog( #"Error writing image with metadata to Photo Library: %#", error );
} else {
NSLog( #"Wrote image with metadata to Photo Library %#", newURL.absoluteString);
}
};
NSLog(#"file %#", localPath);
NSURL *url = [NSURL fileURLWithPath:localPath isDirectory:NO];
[library writeVideoAtPathToSavedPhotosAlbum:url
completionBlock:videoWriteCompletionBlock];
But the output I get is:
2013-07-24 00:13:32.094 App[1716:907] file /var/mobile/Applications/70C18C4E-9F97-4A6A-B63E-1BD19961F010/Documents/downloaded_video.mp4
2013-07-24 00:13:32.374 App[1716:907] Wrote image with metadata to Photo Library (null)
And of course the file is not saved in the camera roll. It's a simple mp4, compatible with the device I'm using (i.e. it should be possible to save it).
I honestly have no idea what to do. Any hint will be highly appreciated. Thanks
I may have found a workaround for you. Have you tried an AVAssetExportSession?
In the sample below, I built a simple app that has two buttons on the screen. One calls onSaveBtn:, which simply grabs the URL of a video I have in my app's resource bundle and saves it to the user's saved photos album. (Though, in my case my videos do return YES from videoAtPathIsCompatibleWithSavedPhotosAlbum:. I didn't have any videos that don't return otherwise.)
The second button is wired to onExportBtn:, which takes the video we want to save, creates an AVAssetExportSession, exports the video to a temp directory, and then copies the exported video to the saved photos album. Due to the export time, this method does take longer than a simple copy, but maybe this could be an alternate path - check the results of videoAtPathIsCompatibleWithSavedPhotosAlbum:, and if YES, copy directly to the album. Otherwise, export the video, then copy.
Without having a video file that doesn't return NO to the compatibility call, I'm not 100% sure this would work for you, but it's worth a shot.
You may also want to check out this question, which explores what video formats are compatible on the device you may be using.
#import <AVFoundation/AVFoundation.h>
#import <AssetsLibrary/AssetsLibrary.h>
- (IBAction)onSaveBtn:(id)sender
{
NSURL *srcURL = [[NSBundle mainBundle] URLForResource:#"WP_20121214_001" withExtension:#"mp4"];
[self saveToCameraRoll:srcURL];
}
- (IBAction)onExportBtn:(id)sender
{
NSURL *srcURL = [[NSBundle mainBundle] URLForResource:#"WP_20121214_001" withExtension:#"mp4"];
AVAsset *srcAsset = [AVAsset assetWithURL:srcURL];
// create an export session
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:srcAsset presetName:AVAssetExportPresetHighestQuality];
// Export the file to a tmp dir
NSString *fileName = [srcURL lastPathComponent];
NSString *tmpDir = NSTemporaryDirectory();
NSURL *tmpURL = [NSURL fileURLWithPath:[tmpDir stringByAppendingPathComponent:fileName]];
exportSession.outputURL = tmpURL;
exportSession.outputFileType = AVFileTypeQuickTimeMovie;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
// now copy the tmp file to the camera roll
switch ([exportSession status]) {
case AVAssetExportSessionStatusFailed:
NSLog(#"Export failed: %#", [[exportSession error] localizedDescription]);
break;
case AVAssetExportSessionStatusCancelled:
NSLog(#"Export canceled");
break;
case AVAssetExportSessionStatusCompleted:
NSLog(#"Export successful");
[self saveToCameraRoll:exportSession.outputURL];
break;
default:
break;
}
}];
}
- (void) saveToCameraRoll:(NSURL *)srcURL
{
NSLog(#"srcURL: %#", srcURL);
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
ALAssetsLibraryWriteVideoCompletionBlock videoWriteCompletionBlock =
^(NSURL *newURL, NSError *error) {
if (error) {
NSLog( #"Error writing image with metadata to Photo Library: %#", error );
} else {
NSLog( #"Wrote image with metadata to Photo Library %#", newURL.absoluteString);
}
};
if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:srcURL])
{
[library writeVideoAtPathToSavedPhotosAlbum:srcURL
completionBlock:videoWriteCompletionBlock];
}
}
Where are you providing the URL to the block.
I think you need to do this way..
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library writeVideoAtPathToSavedPhotosAlbum:videoURL completionBlock:^(NSURL *assetURL, NSError *error){
/*notify of completion*/
NSLog(#"AssetURL: %#",assetURL);
NSLog(#"Error: %#",error);
if (!error) {
//video saved
}else{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Error" message:error.domain delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];
[alert release];
}
}];
You can change the url here, I have used for the imagePickerController..
See if its helps you..
Here's a shorter answer.
In my case, I've used AFNetworking to download a video from a URL and in the downloadCompletedBlock of the download operation, responseObject returns the download file. Logging responseObject returns me the full file path of the downloaded video.
If you are using another method to download videos, simply replace responseObject with the full file path of your video, probably with the usual NSSearchPathForDirectoriesInDomains method.
Here's the snippet I use to export videos in the application's local file directory to the Camera Roll:
NSURL *responseObjectPath = [NSURL URLWithString:responseObject];
// If video is compatible with Camera Roll
if ([[ALAssetsLibrary new] videoAtPathIsCompatibleWithSavedPhotosAlbum:responseObjectPath])
{
// Export to Camera Roll
[[ALAssetsLibrary new] writeVideoAtPathToSavedPhotosAlbum:responseObjectPath completionBlock:nil];
}
else
{
NSLog(#"Incompatible File Type");
}
Cheers!
I am currently coding an application that is using an XML document to retrieve data (I am using libxml2.2.7.3). I set it to load a local XML-file (in the project in xCode, so along with all the other project files). I found that I wanted to be able to edit this XML file and then have instant updates on the application. I fetch the data from the XML document like this:
NSArray *dagensRetList = [self getAllItems:#"//dagensret" fileName:#"dagensret.xml"];
I thought that the easiest way to come around this would be to download the xml-file whenever there is a new version of that document available from the webserver that I provide (on every application launch / clicking the refresh button it would download the new file from the server - maybe let it check whether they have the same tag (weekNumber, it's a Danish coded application))
So I am thinking on what would be the most convenient way to download the file and should I keep this way of fetching the data or would it be more wise to keep the document on the server and they would then read directly from the server everytime? (It could however end up using a lot of traffic, but it's a product for my school so the user-base would be around 1200, but less as not everyone is using a smartphone)
How would you download a file from a webserver and then keep it cached?
You should definitely cache the file on the device in case the user can't connect to the server.
Something like this should get you started:
// Create a URL Request and set the URL
NSURL *url = [NSURL URLWithString:#"http://google.com"]
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
// Display the network activity indicator
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
// Perform the request on a new thread so we don't block the UI
dispatch_queue_t downloadQueue = dispatch_queue_create("Download queue", NULL);
dispatch_async(downloadQueue, ^{
NSError* err = nil;
NSHTTPURLResponse* rsp = nil;
// Perform the request synchronously on this thread
NSData *rspData = [NSURLConnection sendSynchronousRequest:request returningResponse:&rsp error:&err];
// Once a response is received, handle it on the main thread in case we do any UI updates
dispatch_async(dispatch_get_main_queue(), ^{
// Hide the network activity indicator
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
if (rspData == nil || (err != nil && [err code] != noErr)) {
// If there was a no data received, or an error...
} else {
// Cache the file in the cache directory
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString* path = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"init.xml"];
[[NSFileManager defaultManager] removeItemAtPath:path error:nil];
[data writeToFile:path atomically:YES];
// Do whatever else you want with the data...
}
});
});
How can I play a YouTube video in an MPMoviePlayerController on the iPhone while avoiding going into fullscreen mode?
This question has been raised here: MPMoviePlayerController is playing YouTube video? and here: Play Youtube video in MPMoviePlayerController or play RTSP - 3GP link with answers claiming such functionality was impossible.
Yet this app, Deja, has exactly the functionality I would like: a seamless MPMoviePlayerController whose frame I have explicit control over. http://itunes.apple.com/app/deja/id417625158
How is this done!?
add this sample into you project
instantiate YoutubeStreamPathExtractorTest
invoke test method of YoutubeStreamPathExtractorTest instance.
Follow logs and be happy
#import "AFHTTPRequestOperationManager.h"
#import <MediaPlayer/MediaPlayer.h>
typedef void (^CallbackBlock)(NSArray* result, NSError* error);
static NSString* const kYouTubeStreamPathPattern = #"\\\"url_encoded_fmt_stream_map\\\\\":.*?url=(.*?)\\\\u0026";
#interface YoutubeStreamPathExtractorTest : NSObject
- (void)test;
- (void)youtubeURLPath:(NSString*)youtubeURLPath extractStreamURLPathsWithCallback:(CallbackBlock)callback;
#end
#implementation YoutubeStreamPathExtractorTest
- (void) test {
NSString* path = #"http://www.youtube.com/watch?v=TEV5DZpAXSw";
[self youtubeURLPath:path extractStreamURLPathsWithCallback:^(NSArray *result, NSError *error) {
if (error){
NSLog(#"extracting error:%#",[error localizedDescription]);
}
for(NSString* streamURLPath in result) {
NSLog(#"streamURLPath:%#",streamURLPath);
/*
NSURL* url = [NSURL URLWithString:streamURLPath];
MPMoviePlayerController* mpMoviePlayerController_ = [[MPMoviePlayerController alloc] initWithContentURL:url];
mpMoviePlayerController_.controlStyle = MPMovieControlStyleDefault;
[mpMoviePlayerController_ play];
*/
}
}];
}
- (void)youtubeURLPath:(NSString*)youtubeURLPath extractStreamURLPathsWithCallback:(CallbackBlock)callback {
__block NSMutableArray* resultArray = [NSMutableArray new];
AFHTTPRequestOperationManager* manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:nil];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:#"text/html", nil];
[manager GET:youtubeURLPath
parameters:nil
success:^(AFHTTPRequestOperation* operation, id responseObject) {
NSData* data = (NSData*)responseObject;
NSString* string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSError* error = nil;
NSRegularExpression* expression = [NSRegularExpression regularExpressionWithPattern:kYouTubeStreamPathPattern
options:NSRegularExpressionCaseInsensitive
error:&error];
NSRange range = NSMakeRange(0,[string length]);
NSArray* matches = [expression matchesInString:string options:0 range:range];
for(NSTextCheckingResult* checkingResult in matches) {
if ([checkingResult numberOfRanges]>1){
NSString* resultStr = [string substringWithRange:[checkingResult rangeAtIndex:1]];
//remove extra slashes
[resultArray addObject:[resultStr stringByReplacingOccurrencesOfString:#"\\" withString:#""]];
}
}
if (callback) {
callback(resultArray,error);
}
} failure:^(AFHTTPRequestOperation* operation, NSError* error) {
if (callback) {
callback(resultArray, error);
}
}];
}
#end
MPMoviePlayerController does not support the playback of YouTube SWF (Flash) video, period.
That app you are mentioning actually plays progressively downloaded files in MP4 format which YouTube also offers for some of its content. This actually is a violation of Apple's guidelines as it will (and does) exceed the maximum amount of progressive download per app per timeframe. I am surprised it got through the iTunes approval.
Warning: iOS apps submitted for distribution in the App Store must
conform to these requirements. If your app delivers video over
cellular networks, and the video exceeds either 10 minutes duration or
5 MB of data in a five minute period, you are required to use HTTP
Live Streaming. (Progressive download may be used for smaller clips.)
If your app uses HTTP Live Streaming over cellular networks, you are
required to provide at least one stream at 64 Kbps or lower bandwidth
(the low-bandwidth stream may be audio-only or audio with a still
image).
These requirements apply to iOS apps submitted for distribution in the
App Store for use on Apple products. Non-compliant apps may be
rejected or removed, at the discretion of Apple.
So your task boils down to the question on how to get the MP4 URL of a video offered through YouTube. That part is really tricky and nicely solved by Deja. Just use a packet sniffer and you will see that it actually creates a local server that feeds MPMoviePlayerController.
try this code:
NSString *urlStr=[Your url is here];
NSURL *url = [NSURL fileURLWithPath:urlStr];
MPMoviePlayerController* moviePlayer = [[MPMoviePlayerController alloc]initWithContentURL:url];
[self.view addSubview:moviePlayer.view];
moviePlayer.view.frame = CGRectMake(set frame is here);
[moviePlayer play];
[moviePlayer setFullscreen:NO animated:YES];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(moviePlayBackDidFinish)
name:MPMoviePlayerPlaybackDidFinishNotification
object:nil];
I guess it is against Youtube ToS but you can use this code here:
https://github.com/larcus94/LBYouTubeView
It is simple to use and works like a charm!
Use UIWebView. Copy HtML code video in youtube.
UIWevView* movie = [UIWebView alloc] initWithFrame:CGRectMake(0,0,320,460)];
NSString* urlString = #"past HTML code";
[self.webView loadHTMLString:urlString baseURL:nil];
[self.view addSubview:movie];
Does anybody know how to use UIDocumentInteractionController to "Open in iBooks" remote pdf files, i can't seem to be able to get around this one. I have managed to open my pdf in QLPreviewController and get the OptionsMenu to give me the option to open in iBooks but i won't open the file if it is remote...when i use local file it works fine.
If this is not possible what is the alternative?
Thanks in advance
Although UIDocumentInteractionController has a convenience method interactionControllerForURL:, it requires the argument to be a file URL. So you either download the PDF within your app and open it with the UIDocumentInteractionController object or you can use a UIWebView object to open remote PDFs. Pass the URL to the web view and they open just fine.
Ad mentioned you must use a file url for UIDOcumentInteractionController. First download the document. A really easy way to do this is with AFNetworking. Here is how I am using AFNetworking to download a file:
- (BOOL)webView:(UIWebView *)theWebView shouldStartLoadWithRequest:(NSURLRequest *)req navigationType:(UIWebViewNavigationType)navigationType {
self.title = req.URL.description;
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = req.URL;
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
NSURL *documentsDirectoryPath = [NSURL fileURLWithPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]];
self.fileURLPath = [documentsDirectoryPath URLByAppendingPathComponent:[response suggestedFilename]];
return self.fileURLPath;
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
NSLog(#"File downloaded to: %#", filePath);
}];
[downloadTask resume];
return YES;
}
Now that you have the fileURLPath you can create the UIDocumentInteractionController like so:
documentController = [UIDocumentInteractionController interactionControllerWithURL:self.fileURLPath];
I'm creating an app which downloads a .zip file from S3 server.
All works fine. Now I want to be able to interrupt the current download. If I could save the current size (bytes) of the file, I would be able to send a new request with a range header for the other part of the file.
Problem lies in the fact that I cannot determine the size of the 'already' downloaded content, because I can only see the file in my directory when the download is completed. So if I interrupt, there isn't a partial file saved.
At this time I use the following code for this:
-(void) downloadFile:(NSMutableArray*)paramArray withDict:(NSMutableDictionary*)options
{
NSLog(#"DOWNLOAD THREAD STARTED");
NSString * sourceUrl = [paramArray objectAtIndex:0];
NSString * fileName = [paramArray objectAtIndex:1];
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *newFilePath = [documentsDirectory stringByAppendingString:fileName];
NSError *error=[[[NSError alloc]init] autorelease];
NSURLConnection *fileURL = [NSData dataWithContentsOfURL: [NSURL URLWithString:sourceUrl]];
BOOL response = [fileURL writeToFile:newFilePath options:NSDataWritingFileProtectionNone error:&error];
if (response == TRUE)
{
NSLog(#"DOWNLOAD COMPLETED");
[self performSelectorOnMainThread:#selector(downloadComplete:withDict:) withObject:paramArray waitUntilDone:YES];
}
else
{
NSLog(#"Something went wrong while downloading file.");
NSString *callback = [NSString stringWithFormat:#"downloadInterrupted('%#');",fileName];
[webView stringByEvaluatingJavaScriptFromString:callback];
}
[pool drain];
}
AsiHTTP isn't an option because there are issues with the PhoneGap I'm using.
A better idea is to download the file asynchronously. This has several advantages: The most important one is that your user interface stays responsive. The user can go on using your application while it is downloading and waiting for the data. If the data you are downloading is absolutely essential for the application, display some sort of loading indicator.
You can easily start the asynchronous download via
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:sourceUrl]];
NSURLConnection *connection = [NSURLConnection connectionWithRequest:request delegate:self];
Now, how do I get the downloades data in an NSData object? You implement the following delegate methods for self:
-connection:didReceiveData:
-connection:didFailWithError:
-connectionDidFinishLoading:
The idea is that you are notified whenever some data drops in through your connection or anything important else happens (success or failure for exmple). So you are going to declare a temporary NSMutableData object as an instance variable (say downloadData) and write to it until the download is complete. Do not forget to initialize the empty object and declare a property as well!
-connection:didReceiveData: is called whenever some sort of data (that is, a part of your downloaded file) arrives. So you are going to append it to your temporary object like this:
-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[self.downloadData appendData:data];
}
Once the download has finished (successfully), the next delegate method is called:
-(void) connectionDidFinishLoading:(NSURLConnection *)connection {
//do whatever you need to do with the data in self.downloadData
}
If the downloads fails, -connection:didFailWithError: is called. You can then save the temporary object, get its size and resume the download later. [self.downloadData length]; gets you the size in bytes of the data in your object.
You are going to have to use a lower level api.
time to read up on unix socket programming. http://www.fortunecity.com/skyscraper/arpanet/6/cc.htm would be a good start.
It really won't be too hard. honest.
I recommend you to build a method that save data chunk every 1, 2 MB or maybe less in order to resume properly your download and avoid memory crash.
This because if you get an error in your transfer maybe your file could be result corrupted.
Anyway send a range HTML header is pretty simple
NSFileHandle *fileHandler = [NSFileHandle fileHandleForReadingAtPath:dataPreviouslySavedPath];
[fileHandler seekToEndOfFile];
unsigned long long int range = [fileHandler offsetInFile];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:downloadURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:20.0];
[request setValue:[NSString stringWithFormat:#"bytes=%lli-", range] forHTTPHeaderField:#"Range"];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
Hope this help you.