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get video info via post request using innertube api key #545

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get video info via post request using innertube api key #545

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3 changes: 3 additions & 0 deletions XCDYouTubeKit/XCDYouTubeClient.h
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,9 @@ NS_ASSUME_NONNULL_BEGIN
*/
@interface XCDYouTubeClient : NSObject

+ (NSString *)innertubeApiKey;
+ (void)setInnertubeApiKey:(NSString *)key;

/**
* ------------------
* @name Initializing
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11 changes: 11 additions & 0 deletions XCDYouTubeKit/XCDYouTubeClient.m
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,8 @@ @implementation XCDYouTubeClient

@synthesize languageIdentifier = _languageIdentifier;

static NSString * _innertubeApiKey = @"AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8";
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@NikKovIos NikKovIos Aug 6, 2021

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Isn't its private someone's key? I think you shouldn't commit it.

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@johan456789 johan456789 Apr 8, 2025

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according to one comment here, it's the internal API used by YouTube's UI


+ (instancetype) defaultClient
{
static XCDYouTubeClient *defaultClient;
Expand All @@ -29,6 +31,15 @@ - (instancetype) init
return [self initWithLanguageIdentifier:nil];
}


+ (NSString *)innertubeApiKey {
return _innertubeApiKey;
}

+ (void)setInnertubeApiKey:(NSString *)key {
_innertubeApiKey = key;
}

- (instancetype) initWithLanguageIdentifier:(NSString *)languageIdentifier
{
if (!(self = [super init]))
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55 changes: 50 additions & 5 deletions XCDYouTubeKit/XCDYouTubeVideoOperation.m
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
#import "XCDYouTubeDashManifestXML.h"
#import "XCDYouTubePlayerScript.h"
#import "XCDYouTubeLogger+Private.h"
#import "XCDYouTubeClient.h"

typedef NS_ENUM(NSUInteger, XCDYouTubeRequestType) {
XCDYouTubeRequestTypeGetVideoInfo = 1,
Expand Down Expand Up @@ -146,13 +147,24 @@ - (void) startNextRequest
}
else
{
NSString *eventLabel = [self.eventLabels objectAtIndex:0];
[self.eventLabels removeObjectAtIndex:0];

NSDictionary *query = @{ @"video_id": self.videoIdentifier, @"hl": self.languageIdentifier, @"el": eventLabel, @"ps": @"default" };
NSString *queryString = XCDQueryStringWithDictionary(query);
NSURL *videoInfoURL = [NSURL URLWithString:[@"https://www.youtube.com/get_video_info?" stringByAppendingString:queryString]];
[self startRequestWithURL:videoInfoURL type:XCDYouTubeRequestTypeGetVideoInfo];
NSString *urlString = [NSString stringWithFormat:@"https://youtubei.googleapis.com/youtubei/v1/player?key=%@", XCDYouTubeClient.innertubeApiKey];
NSURL *url = [NSURL URLWithString:urlString];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];

[request setHTTPMethod:@"POST"];

NSString *string = [NSString stringWithFormat:@"{'context': {'client': {'hl': 'en','clientName': 'WEB','clientVersion': '2.20210721.00.00','mainAppWebInfo': {'graftUrl': '/watch?v=%@'}}},'videoId': '%@'}", self.videoIdentifier, self.videoIdentifier];

NSData *postData = [string dataUsingEncoding:NSASCIIStringEncoding];

[request setHTTPBody:postData];

[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

[self startRequestWith:request type:XCDYouTubeRequestTypeGetVideoInfo];
}
}

Expand Down Expand Up @@ -206,6 +218,39 @@ - (void) startRequestWithURL:(NSURL *)url type:(XCDYouTubeRequestType)requestTyp
self.requestType = requestType;
}

- (void) startRequestWith:(NSMutableURLRequest *)request type:(XCDYouTubeRequestType)requestType
{
if (self.isCancelled)
return;

// Max (age-restricted VEVO) = 2×GetVideoInfo + 1×WatchPage + 2×EmbedPage + 1×JavaScriptPlayer + 1×GetVideoInfo + 1xDashManifest
if (++self.requestCount > 8)
{
// This condition should never happen but the request flow is quite complex so better abort here than go into an infinite loop of requests
[self finishWithError];
return;
}

XCDYouTubeLogDebug(@"Starting request: %@", [request URL]);

[request setValue:self.languageIdentifier forHTTPHeaderField:@"Accept-Language"];
[request setValue:[NSString stringWithFormat:@"https://youtube.com/watch?v=%@", self.videoIdentifier] forHTTPHeaderField:@"Referer"];

self.dataTask = [self.session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)
{
if (self.isCancelled)
return;

if (error)
[self handleConnectionError:error requestType:requestType];
else
[self handleConnectionSuccessWithData:data response:response requestType:requestType];
}];
[self.dataTask resume];

self.requestType = requestType;
}

#pragma mark - Response Dispatch

- (void) handleConnectionSuccessWithData:(NSData *)data response:(NSURLResponse *)response requestType:(XCDYouTubeRequestType)requestType
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