HD Stutter but SD is fine (1 Viewer)

JoeF

Portal Pro
October 17, 2012
91
2
37
Manchester, United Kingdom
Home Country
United Kingdom United Kingdom
Hi All,

I have just setup mediaportal using mdapi and acamd.

I have LAV installed and FFDshow and also intel quicksync.

My spec is as follows, pentium g620, 4gb ram, 64gb ssd, 2tb hdd, tbs 6981 tuner.

I watch a SD channel within MP for example channel 4+1 and its perfect.

I switch to Sky Sports 1HD and it starts stuttering and not playing smoothly. Im running out of ideas so hopefully someone can help me. I have attached a few images if it helps, one showing SD and the other HD.

Thanks in advance
 

Attachments

  • Untitledjoe.jpg
    Untitledjoe.jpg
    700.5 KB
  • Untitled.jpg
    Untitled.jpg
    191.4 KB

porky996t

MP Donator
  • Premium Supporter
  • May 21, 2008
    1,016
    81
    Bolton, Lancashire, England
    Home Country
    England England
    Hi Joe... and Welcome!!

    Not too sure on the hardware you have, but have you set LAV to use the GPU for processing - it is in the LAV video configuration setting under Start>LAV Filters>LAV Video Config.

    Also I notice a difference in the refresh rates on the first image - your screen is running at 50Hz, yet the broadcast is at 29.6Hz and this is causing the red line on graph to look like it does - the second image the red line is flat and the refresh rates match at 50hz. Have you tried the auto refresh rate changer to correct this?
     
    Last edited:

    Owlsroost

    Retired Team Member
  • Premium Supporter
  • October 28, 2008
    5,540
    5,038
    Cambridge
    Home Country
    United Kingdom United Kingdom
    Also I notice a difference in the refresh rates on the first image - your screen is running at 50Hz, yet the broadcast is at 29.6Hz and this is causing the red line on graph to look like it does - the second image the red line is flat and the refresh rates match at 50hz. Have you tried the auto refresh rate changer to correct this?

    Quick explanation of the info in the render stats screen:

    'Detd FPS' is the FPS it *should* be playing at, 'Act FPS' is the average FPS it's *actually* playing at - in this case it's only 29.6 because it's dropping a lot of frames (which is why the red line is all over the place - the red line basically shows actual FPS in real time).

    I agree with porky966t - make sure LAV video decoder is set to 'DXVA2 Native'. If that doesn't fix it, then I suspect the GPU isn't powerful enough to handle the hardware de-interlacing for 1920 x 1080i HDTV.

    Tony
     

    JoeF

    Portal Pro
    October 17, 2012
    91
    2
    37
    Manchester, United Kingdom
    Home Country
    United Kingdom United Kingdom
    Hi guys.

    I believe i have done the lav stuff but i will double check to make sure.

    The gpu i was told should be fine as its intel hd3000 although when watching sd the cpu usage was 12% but when watching hd the cpu usage was 65 to 75% which someone said indicates the gpu is not being used for some reason. Im not sure :-s
     

    Owlsroost

    Retired Team Member
  • Premium Supporter
  • October 28, 2008
    5,540
    5,038
    Cambridge
    Home Country
    United Kingdom United Kingdom
    Last edited:

    JoeF

    Portal Pro
    October 17, 2012
    91
    2
    37
    Manchester, United Kingdom
    Home Country
    United Kingdom United Kingdom
    Hd is still stuttering after copying the new tsreader and uninstalling all codecs and reinstalling lav filters and selecting dxva native etc.

    So do you think my gpu is not upto the job? My blurays play fine althoigh ive been told live hd is alot higher then blurays thus u dnt see much issues.

    Will a dedicated gfx card fix it like a radeon 6450
     

    Owlsroost

    Retired Team Member
  • Premium Supporter
  • October 28, 2008
    5,540
    5,038
    Cambridge
    Home Country
    United Kingdom United Kingdom

    JoeF

    Portal Pro
    October 17, 2012
    91
    2
    37
    Manchester, United Kingdom
    Home Country
    United Kingdom United Kingdom
    another pic for reference, recorded it and played it back but it was still the same.
     

    Attachments

    • cpu.jpg
      cpu.jpg
      711.5 KB

    Holzi

    Super Moderator
  • Team MediaPortal
  • April 21, 2010
    7,934
    2,235
    Ba-Wü
    Home Country
    Germany Germany
    CPU usage is too high maybe. LAV Video decoder is configured to use DXVA2?

    Maybe you can post a screenshot of you LAV Video settings.
     

    Users who are viewing this thread

    Top Bottom