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Thread: VOD Microsoft Smooth Streaming is CHOPPY at high video resolutions

  1. #1
    Join Date
    Oct 2014
    Posts
    2

    Default VOD Microsoft Smooth Streaming is CHOPPY at high video resolutions

    Hi,

    I am doing some tests with the VOD application for HLS, SilverLight and RTMP playback. It works fine in all of them with low resolution media files but when it comes to HD I have been encountering problems for SilverLight(MSS) playback.

    At the end of my comment you will see the file that I am trying to stream with SilverLight but the result I get is choppy. Again HLS and RTMP streaming works ok.

    This is not a network related problem since the server is running in my localhost. The cpu and memory usage seem normal.

    I wonder if there is some server tuning that should be done to solve this issue.

    Thanks for any answer that can help me find what is wrong.

    Miguel


    General
    Complete name : C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.0.6\content\thor.mp4
    Format : MPEG-4
    Format profile : Base Media
    Codec ID : isom
    File size : 1.64 GiB
    Duration : 1h 52mn
    Overall bit rate mode : Variable
    Overall bit rate : 2 095 Kbps
    Encoded date : UTC 2014-02-06 06:59:09
    Tagged date : UTC 2014-02-06 06:59:09

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.1
    Format settings, CABAC : Yes
    Format settings, ReFrames : 4 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 1h 52mn
    Bit rate : 1 997 Kbps
    Maximum bit rate : 15.2 Mbps
    Width : 1 920 pixels
    Height : 800 pixels
    Display aspect ratio : 2.40:1
    Frame rate mode : Constant
    Frame rate : 23.976 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.054
    Stream size : 1.56 GiB (95%)
    Writing library : x264 core 135 r2 f0c1c53
    Encoding settings : cabac=1 / ref=4 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-3 / threads=36 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=1997 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=31250 / vbv_bufsize=31250 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00
    Encoded date : UTC 2014-02-06 06:59:09
    Tagged date : UTC 2014-02-06 06:59:30
    Color primaries : BT.709
    Matrix coefficients : BT.709

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 1h 52mn
    Bit rate mode : Variable
    Bit rate : 93.8 Kbps
    Maximum bit rate : 105 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Compression mode : Lossy
    Stream size : 75.2 MiB (4%)
    Language : English
    Encoded date : UTC 2014-02-06 06:59:28
    Tagged date : UTC 2014-02-06 06:59:30

  2. #2

    Default

    Hello there and welcome to the Wowza support forum.

    Can you please test this with one of the higher bitrate files Wowza provides for testing purposes?

    You can find examples to test with in this guide. Please make sure to follow this guide for configuring ABR streaming:
    How to do adaptive bitrate streaming

    Here is the link to the downloadable files.

    Thank you,

    Salvadore

  3. #3
    Join Date
    Oct 2014
    Posts
    2

    Default

    The problem I had was due to my Silverlight player. I tried with another computer and it worked fine.

    Thanks

  4. #4

    Default

    That's great news, thanks for the update and glad to hear its working for you now.

    Salvadore

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