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We have this iOS project that uses QuickBlox Video Chat. Basing from the sample app they've given, we were able to implement it successfully. When we tested it, the quality looks a bit bad. Does anyone know how to up the quality of the video chat?

Thanks.

user1041274
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1 Answers1

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you can change the video quality by setting kQBVideoChatFrameQualityPreset in videoChatConfiguration,

    NSMutableDictionary *videoChatConfiguration = [[QBSettings videoChatConfiguration] mutableCopy];
    [videoChatConfiguration setObject:@20 forKey:kQBVideoChatCallTimeout];
    [videoChatConfiguration setObject:@10 forKey:kQBVideoChatVideoFramesPerSecond];
    // config video quality here
    [videoChatConfiguration setObject:AVCaptureSessionPresetMedium forKey:kQBVideoChatFrameQualityPreset];
    [QBSettings setVideoChatConfiguration:videoChatConfiguration];

The available options:

//achieve high quality video and audio output.defaultvalue.
AVF_EXPORT NSString *const AVCaptureSessionPresetHigh NS_AVAILABLE(10_7, 4_0);
//achieve output video and audio bitrates suitable for sharing over WiFi.
AVF_EXPORT NSString *const AVCaptureSessionPresetMedium NS_AVAILABLE(10_7, 4_0);
//achieve output video and audio bitrates suitable for sharing over 3G.
AVF_EXPORT NSString *const AVCaptureSessionPresetLow NS_AVAILABLE(10_7, 4_0);
Joiningss
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  • Thanks! It works. We are currently using Medium preset. Although, it seems the framerate is bad whenever we try it on a iOS device in iOS7 (tested on iPad2 and iPhone5) but it works fine on iOS6. What do you think could be the reason for this? – user1041274 Nov 21 '13 at 19:38
  • @user1041274 I'm not sure what makes the difference of framerate. How about set higher kQBVideoChatVideoFramesPerSecond in iOS7 device? – Joiningss Nov 22 '13 at 02:16