Adjust Quality while streaming video with AVPlayer

Question

How can I able to set low or high quality video withstreaming video with AVPlayer?

My code is as follow:

self.videoPlayerItem = [AVPlayerItem playerItemWithURL:videoUrl];

    videoPlayer = [AVPlayer playerWithPlayerItem:self.videoPlayerItem];
    videoPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
    CGRect frame = self.frame;
    videoPlayerLayer = [AVPlayerLayer layer];
    [videoPlayerLayer setPlayer:videoPlayer];
    [videoPlayerLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];

Thanks for your time

I guess this is only one possible solution to switch URLs: http://stackoverflow.com/questions/24790126/avplayer-switching-stream-quality-while-playing — Injectios, Nov 08 '16 at 10:23
@Injectios, I don't have separate URL for low quality I have just one URL. — user2526811, Nov 08 '16 at 10:30

Rhythmic Fistman · Answer 1 · 2016-11-08T21:30:09.690

1

You can lower the video quality/bitrate by setting AVPlayerItem's preferredPeakBitRate.

Re-set it to zero to get the usual "highest quality/bitrate supported by your connection" behaviour.

N.B. A bitrate less than or equal to preferredPeakBitRate must be available for this to work, e.g. in an HLS stream.

edited Nov 08 '16 at 21:30

answered Nov 08 '16 at 12:14

Rhythmic Fistman

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I tried to set it but no effected. I tried with value 1, it is same as highest – user2526811 Nov 08 '16 at 13:02
are you able to explain me this? indicated bitrate is 2368563.665595 observerd bitrate is 690212.603009 preferred bitrate is 100000.000000 – user2526811 Nov 08 '16 at 13:09
I don't think `preferredPeakBitRate` can conjure bitrates that aren't actually provided by the server. What bitrates are available in your stream? – Rhythmic Fistman Nov 08 '16 at 21:31
Server bit rate is 20 Lacs. – user2526811 Nov 09 '16 at 04:44
The server doesn't offer any other bitrates? – Rhythmic Fistman Nov 09 '16 at 04:46
no, I am uploading video with 20 lacs bitrate to server & get the same video from server by URL – user2526811 Nov 09 '16 at 04:55
So only 1 bitrate is available? Ps what are lacs? – Rhythmic Fistman Nov 09 '16 at 04:56
20 lacs means 20,00,000. yes, I am uploading video with 20,00,000 bitrate via ios devices & that will save to server. After that Server provides me a URL to playback it. – user2526811 Nov 09 '16 at 04:58
If you've only got one bitrate available then you have nothing to vary. Have you looked at HLS? – Rhythmic Fistman Nov 09 '16 at 05:05
yes, but I am very confused with all configuration with HLS – user2526811 Nov 09 '16 at 05:07
can you let me know any feedback? – user2526811 Nov 17 '16 at 04:18
@RhythmicFistman, can you provide demo code like how to change quality with bitrate? – Kuldeep Apr 05 '17 at 07:23
Just set the player item's `preferredPeakBitRate` - but I think you can only lower the rate using this method. – Rhythmic Fistman Apr 05 '17 at 12:43
How can you confirm that this is actually working in code? I am definitely seeing the rendition switch to lower qualities (we have different renditions with burned in images indicating their quality), but I'm wondering how to confirm that the bitrate of the AVPlayer's currentItem is actually going up or down. It seems that the observedBitrate value of the accessLog event doesn't show any indication of this. – FateNuller Sep 04 '17 at 04:05

Adjust Quality while streaming video with AVPlayer

1 Answers1