QuickBlox Video Chat Quality

问题

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.

回答1:

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);

来源：https://stackoverflow.com/questions/20111654/quickblox-video-chat-quality