HTTP Live Streaming with AVPlayer in iOS 4.0?

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轻奢々
轻奢々 2020-12-15 14:32

Is it possible to use HTTP Live Streaming with AVPlayer on iOS 4.0? This was clearly a documented feature of 4.0. However, if I run Apple\'s SitchedStreamPlayer sample code

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  • 2020-12-15 14:54

    This is a bug in 4.0, but I found a workaround. Here is the correct way to load video with AVPlayer:

        AVPlayer *player = [AVPlayer playerWithURL:[NSURL URLWithString:@"http://qtdevseed.apple.com/addemo/ad.m3u8"]];
    // now use KVO to decide when it's ready to play
    // works in both 4.3 and 4.0.1
    

     

    The code from StitchedStreamPlayer works in 4.3 but not 4.0.1:

    AVURLAsset *asset = [AVURLAsset URLAssetWithURL:[NSURL URLWithString:@"http://qtdevseed.apple.com/addemo/ad.m3u8"] options:nil];
        NSArray *tracksKeys = [NSArray arrayWithObjects:kTracksKey, kDurationKey, kPlayableKey, nil];
        [asset loadValuesAsynchronouslyForKeys:tracksKeys completionHandler:
         ^{
             NSError *error = nil;
             AVKeyValueStatus status = [asset statusOfValueForKey:[tracksKeys objectAtIndex:0] error:&error];
             NSLog(@"status=%@,error=%@",(status==AVKeyValueStatusLoaded?@"Loaded":status==AVKeyValueStatusFailed?@"Failed":@"?!"),error);
         }];
    
    // output in 4.3: status=Loaded,error=(null)
    // output in 4.0.1:  status=Failed,error=Error Domain=AVFoundationErrorDomain Code=-11828 "Cannot Open" UserInfo=0x15f2a0 {NSLocalizedFailureReason=This media format is not supported., NSUnderlyingError=0x1599e0 "The operation couldn’t be completed. (OSStatus error -12847.)", NSLocalizedDescription=Cannot Open}
    

     

    For more info see the old version of StitchedStreamPlayer.

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