[問題] MPMoviePlayerController Leak!!!

[lab0424 (刻骨銘心...)]

大大們好~
這裡有個leak問題想問問看有沒有大大知道的
程式簡易關鍵代碼:

        mp = [[MPMoviePlayerController alloc] initWithContentURL:strurl];
        [mp setControlStyle:MPMovieControlStyleDefault];
        [mp prepareToPlay];

        [[NSNotificationCenter defaultCenter] addObserver:self

                                                 selector:@selector(moviePlayerLoadStateChanged:)

                                                     name:MPMoviePlayerLoadStateDidChangeNotification

                                                   object:nil];

        [[NSNotificationCenter defaultCenter] addObserver:self

                                                 selector:@selector(moviePlayBackDidFinish:)

                                                     name:MPMoviePlayerPlaybackDidFinishNotification

                                                   object:nil];

=====>  然後在moviePlayerLoadStateChanged裡面
        [mp play];

=====>  而moviePlayBackDidFinish裡面執行
        if (mp)
        {
                [mp pause];
                mp.initialPlaybackTime = -1;
                [mp stop];
                mp.initialPlaybackTime = -1;
                [mp release];
                mp = nil;
        }

一旦關閉正在播放的影片,於是執行到moviePlayBackDidFinish中
但卻發現:
if (mp)
{
    NSLog(@"test(0) mp retain count=%d", [mp retainCount]); //=>retain count是1
    [mp pause];
    NSLog(@"test(1) mp retain count=%d", [mp retainCount]); //=>retain count是2
    mp.initialPlaybackTime = -1;
    [mp stop];
    NSLog(@"test(2) mp retain count=%d", [mp retainCount]); //=>retain count是5
    mp.initialPlaybackTime = -1;
    [mp release];
    mp = nil;
}

想問問有大大們
(1)為什麼執行pause時, retain count從1變成2, 而執行stop時retain count從2變成5
(2)怎麼樣可以避免這個leak

感謝大大們關注!!!
感謝!!!

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→ yllan:正常狀況下你用不到 retainCount. 這也不代表他 leak
→ lab0424:因為觀察Instruments裡面的activity monitor發現leak
→ lab0424:每次播影片會上升1M多的記憶體用量, 然而都沒下降下來!
→ lab0424:所以才開始觀察member的retain count
推 offname:在實機上用 intrument 找一下 leak 沒有的話可以暫時不管
→ zonble:先跑一下 Build and Analyze 吧
→ zonble:Retain Count 增加不代表 Memory Leak
→ zonble:先檢查一下會不會是漏在其他地方