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Pixelation Through Direct Play via OpenPHT

SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

Any idea what's causing this occasional pixelation? It seems to only happen every so often with a certain type of encoding...others play perfectly fine. I'm using OpenPHT (latest version) and having my PMS direct play to my PC. It only lasts a few seconds, but it is annoying. If I play the file in Windows Media Player (with the proper corresponding codecs installed), the file plays perfectly fine.

Answers

  • DuffHQDuffHQ Posts: 104Members, Plex Pass Plex Pass

    I'm seeing the same thing on my odroid-c2, but only when I skip back and forth in the movie.. takes a few seconds to "resync"

  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

    For reference, here are the video details from MediaInfo:

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.1
    Format settings, CABAC : Yes
    Format settings, ReFrames : 9 frames
    Codec ID : V_MPEG4/ISO/AVC
    Duration : 56mn 8s
    Bit rate : 3 523 Kbps
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    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) : 0.159
    Stream size : 1.38 GiB (83%)
    Writing library : x264 core 144 r2525 40bb568
    Encoding settings : cabac=1 / ref=9 / deblock=1:-3:-3 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=48 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / 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=crf / mbtree=0 / crf=17.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.30 / pb_ratio=1.20 / aq=3:0.80

    Language : English
    Default : Yes
    Forced : No

  • daniel.culldaniel.cull Posts: 320Members, Plex Pass Plex Pass

    does it happen when seeking/skipping only?

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  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass
    edited May 9

    It actually happens during playback for 3-4 seconds each time. I'm not ffwd'ing or seeking when it happens.

  • daniel.culldaniel.cull Posts: 320Members, Plex Pass Plex Pass

    what is your version of OpenPHT and what are OS are you running it on? (dont reply with 'latest' please
    What version of PMS are you running?

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  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

    Windows 7, 32-bit

    OpenPHT 1.8.0.148

    PMS 1.5.5.3634

  • daniel.culldaniel.cull Posts: 320Members, Plex Pass Plex Pass

    are you display drivers up to date? what is your graphics card?

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  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

    Intel HD Graphics

    I'll have to get the exact model and drivers here soon. I do know that it's an i3-550 processor on the machine running OpenPHT.

  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

    So, apparently my dumb @ss forgot to install the official Intel HD Graphics drivers when I rebuilt it a few weeks ago and let Windows 7 use its own. I updated the display drivers and will keep monitoring the situation to see if this happens again moving forward.

  • daniel.culldaniel.cull Posts: 320Members, Plex Pass Plex Pass

    i suspect that will probably fix it yea

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  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

    Thanks for the help, btw.

  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

    I'm still getting that same random pixelation even after updating the display driver.

  • SturmieSturmie Posts: 30Members, Plex Pass Plex Pass

    Any other suggestions? The files play fine through Windows Media Player with Shark007 codecs or the Plex Media Player, but pixelates (like in the screenshot above) regular on some files through OpenPHT.

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