MKV 1080 - DTS audio stream cause video stutter

Discussion in 'Codecs, External Players' started by snickwad, June 23, 2011.

  1. snickwad

    snickwad Portal Member

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    Hi all.

    I seem to be getting nowhere trying to get smooth video with DTS/DTS-HD audio in 1080 mkv files. Every second or so I get a little, but noticeable stutter. I have SAF 5.02 installed, and all other aspects of Mediaportal work flawlessly. I have scoured the forums regarding this, and have tried the various suggestions (apart from removing SAF). Switch audio to DD5.1 AC3 during playback, and I get a perfect viewing experience. I'm not sure if the logs would provide any clues, but happy to post if that would help.

    All audio/video goes over HDMI. I have tried updated ATI drivers, I have removed the ATI HD audio driver and replaced with the Realtek and tried and reset various codec 'tweaks'. However, problem still remains.....

    Could anyone suggest a structured approach to tracking this down; i.e. strat with the graphics card/audio driver setup (all currently at the deafult), MP config options, codec settings, or even Amp/TV options which might cause this?

    99% of my media is on my NAS, but I have ruled this out by using the same mkv file, and tested in multiple players, both over the network, and again from local storage, with consistent (stuttering) results.

    I have run thru Graphstudio with nothing untoward, and Filmerit reports no errors, so, over to the forum experts; all suggestions gratefully received.

    Thanks in advance.

    snickwad


     
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  3. joostzilla
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    joostzilla Retired Team Member

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    Same problem here. No solution yet. Check my system specs for info on that. :(
     
  4. JackTramiel
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    JackTramiel MP Donator

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    Show System Specs
    AW: MKV 1080 - DTS audio stream cause video stutter

    There is an option to choose the audio renderer, what did you select there?

    TV Codecs - MediaPortal Wiki

    Had problems with DTS Stutter and resolved it by changing it back to Default. Dont know if it will help you, might be worth trying.
     
  5. snickwad

    snickwad Portal Member

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    OK, quick update. After more experimenting, I have what seems to be a solution.

    I removed all codecs and confirmed ATI drivers settings were as per the recommendations in the SAF posts.
    Installed LAV Filters (Splitter and Audio) and set all codec options in Mediaportal to the Win 7 / Microsoft DTV.
    Ran Graphstudio and using the Filetrs menu option, got to the config for LAV Audio and set all bitstreaming/passthrough options. The A/V sync option was enabled by default I believe in this dialogue window.
    Set Mediaportal audio codec options to LAV Audio.

    Hope this helps. :D
     
  6. ferryc

    ferryc New Member

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    He Snickwad, took me a little puzzling to understand your explanation; I had the same issue with stuttering video when passing through DTS but it now works fluently! I was already afraid it was the hardware (Llano A8-3850 GPU). Thanks man!
     
  7. technick

    technick Portal Pro

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    Hi like snickwad, I removed SAF, installed LAV splitter only but I use ffdshow like explain here : https://forum.team-mediaportal.com/...layback-quality-84441/index33.html#post797716
    FYI you can also have problem when you insert something in the graph for subtitles, with ffdshow you have a all-in-one solution, the graph is simple so no problem.

    ps : I use also

     
  8. snickwad

    snickwad Portal Member

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    Just a quick note; the latest version of LAV now comes with an Audio Configuration shortcut, so there is no need to set the pass thru option from an external application (such as Graphstudio). I also have no requirement for subtitle use, so as noted by technick, there may be better options if you need them :D
     
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