Results 1 to 4 of 4

Thread: Lowest latency possible encoder and Wowza settings for iOS devices

  1. #1

    Default Lowest latency possible encoder and Wowza settings for iOS devices

    Hi.

    We trying to send out live content to iOS devices with latency/delay as low as possible from when it's encoded, but still keep the stream stable.

    I understand it possible to lower this latency down to 4 seconds from the time of encoding, and even lower.

    What are the recommended settings for the encoder and Wowza? The stream will be around 64 - 256 Kbps, 10 - 15 FPS, 320 x 240 - 640 x 480 resolutions.

    Thanks in advance!

  2. #2
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    Take a look at the cupertinoChunkDurationTarget property in this article:

    http://www.wowza.com/forums/content....rameters-(iOS)

    Read the note on key frame frequency and how it relates to cupertinoChunkDurationTarget. There is not one answer, you have to experiment with encoding parameters and these Property settings

    Richard

  3. #3
    Join Date
    Mar 2012
    Posts
    4

    Default

    Is 4 seconds a reasonable limit to expect though? I've been experimenting with the settings from that article and encoding settings, particularly FPS, keyframe interval, and the chunk duration target. I can't get lower than about 4 seconds. Will more tweaking even be likely to help? 2 seconds would really be ideal.

  4. #4
    Join Date
    Dec 2007
    Posts
    21,962

    Default

    4 seconds is not too bad, very good really, for cupertinostreaming. With 1 second key frame frequency and 1 second (1000 milliseconds) cupertinoChunkDurationTarget, you might get it lower.

    Richard

Similar Threads

  1. Live Streaming to IOS and Android Devices Latency
    By GameDayXtra in forum Performance Tuning Discussion
    Replies: 2
    Last Post: 06-20-2012, 11:53 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •