[TESTING][S905(X)] 10bit/HDR/Dithering Test Builds & Discussion

  • I could limit the error regarding Hyperion. This only occurs with 10bit HEVC files. Thanks to double_write_mode you can handle it very well.

  • Internal dvb tuner isn't supported in testing6. johngalt fix your sources, you have to update linux patches for nougat. Look in my branch

    LibreELEC.tv/projects/S905/patches/linux at 8.0.2-testing6 · afl1/LibreELEC.tv · GitHub

    Also update dtb for KI Pro, there is fix for IR.

    KI_Pro-nougat.dtb

    Thank you, I updated links to that dtb, and added that patch. I missed that commit prior, otherwise patches/sources were good.


    Edit: "testing7" uploaded with that patch and the bbc dvb-t fix added back.

    Edited once, last by johngalt ().

  • Just downloaded your file, and I'm "sorry" to say... There is no macroblocking or flicker of any kind. The picture is perfect.

    LOL, don't be sorry! ;)
    Thank you for testing!


    I also don't see any macroblocking or flickering, then it could possibly be a TV thing.

    Thank you for testing as well.
    A "TV thing" does not really makes sense to me, since everything looks perfect when I use the TV's internal media player via USB.


    ...however there's no need to force 4:2:2 which goes against the default behavior of the box (switching to 4:2:2 at >=50hz).

    The default behavior of the box should be to switch to 4:2:0 at >= 50Hz, not 4:2:2...?
    Afaik, 4:2:2 at >= 50Hz would be more than the HDMI 2.0 bandwidth can handle...



    I am really out of ideas with these artifacts I'm seeing. ;(
    I tried everything, even a completely fresh install without changing any setting whatsoever.


    BTW, using "testing7" for a fresh install does not work johngalt, only update is possible.
    I used "testing1" instead and updated to 7 right after that...


    Does anyone have any more ideas where this could be coming from?

    Edit:
    I asked a friend to lend me his UBD-K8500 for a day, that should help to see if the issue comes from player or TV.
    However, I'm still glad for any suggestions / help. :)

    Mini M8S II 2G/16G (S905X)

    Edited once, last by jd17 ().

  • Hi. Just copy by sftp new img.gz or .tar file to .update folder and restart libreelec. You won't loose anything and software will be updated :)

  • I also couldn't see macroblocking in the Samsung demo. No vertical lines either.


    Maybe there are different revisions of S905X floating around and this is a hardware issue?

    For completeness' sake: I use a Beelink Mini MXIII II bought in February.

  • No vertical lines either.

    Well, at least those have been confirmed by others, including john...
    The HDR Wonderland demo is not the best test video to see those lines though.
    Anything with really bright, light grey or white content is more suited to make out the lines.


    Quote

    Maybe there are different revisions of S905X floating around and this is a hardware issue?

    I am starting to wonder that myself.
    It seems unlikely but at this point I'd believe that it might be a hardware issue...

    Mini M8S II 2G/16G (S905X)

  • Quote

    Add back a BBC DVB-T dropped frame fix.


    Just wanted to let you know, and not very important for me but I just tested testing7 and the BBC One video still judders, it seems dec_control is 0 instead of 4;


    LibreELEC:~ # cat /sys/module/amvdec_h264/parameters/dec_control
    0

    Thanks for your hard work, it is a real pain to find a balance between all the big and little issues with the amlogic code.

  • johngalt If you modify platform_init script, it's best to remove linux and busybox from build folder to make sure the changes are applied. ;)


  • Just wanted to let you know, and not very important for me but I just tested testing7 and the BBC One video still judders, it seems dec_control is 0 instead of 4;


    LibreELEC:~ # cat /sys/module/amvdec_h264/parameters/dec_control
    0

    Thanks for your hard work, it is a real pain to find a balance between all the big and little issues with the amlogic code.

    I guess I needed to full rebuild (was a dirty build)


    The default behavior of the box should be to switch to 4:2:0 at >= 50Hz, not 4:2:2...?
    Afaik, 4:2:2 at >= 50Hz would be more than the HDMI 2.0 bandwidth can handle...


    BTW, using "testing7" for a fresh install does not work johngalt, only update is possible.
    I used "testing1" instead and updated to 7 right after that...

    You're right, I misspoke. And I'll clean build and test a clean install to see what's going on.


    Edit: Thank you kszaq, I just saw your message :) . That makes sense.

  • Get my Bqeel M9Cmax today. All fine with HEVC 10 Bit Playback and HDR, but one problem i have.

    Why is Hyperion not working?

    I can confirm that. My Hyperion doesn't work correctly with 10bits videos too.

    2xS905 (mini m8s 2/8GB internal, KI plus 1/8GB microsd), S912 (M92S plus 2/16GB internal)

  • I could limit the error regarding Hyperion. This only occurs with 10bit HEVC files. Thanks to double_write_mode you can handle it very well.

    Can you describe how?

    2xS905 (mini m8s 2/8GB internal, KI plus 1/8GB microsd), S912 (M92S plus 2/16GB internal)

  • Is there a known problem playing FLAC 24bit ?

    -2re


    8.90 ⇒ MeCool KI Pro ⇒ Onkyo TX-NR656 ⇒ SAMSUNG 65"LED/UHD/PQ1300/T2CS

    LG BP50NB40 USB Blu-ray


  • I reported a FLAC decoding issue a while back, do you mean that?:
    [BUG] S905X Jarvis and Krypton: FLAC decoding issues

    I decided to use opus instead of FLAC in the meantime, so I have not tested if anything changed since then...

    Nope, that's not it. I have some LPCM 5.1 24bit movies that i want to convert to FLAC 5.1, but with 24bit thy won't play. 16bit plays ok.

    -2re


    8.90 ⇒ MeCool KI Pro ⇒ Onkyo TX-NR656 ⇒ SAMSUNG 65"LED/UHD/PQ1300/T2CS

    LG BP50NB40 USB Blu-ray


  • Hmm the 24bit FLAC files I tested back then played fine, so it might be a more recent issue.

    On a side note, i'd also recommend either opus or FLAC 16bit - the savings from FLAC 24bit are a bit disappointing in my opinion and you would not hear any degradation by using 16bit anyhow. ;)

    Mini M8S II 2G/16G (S905X)

  • Just ignore the FLAC 24bit problem for now, looks like the problem is with the conversion. Won't even play on my PC.;)

    -2re


    8.90 ⇒ MeCool KI Pro ⇒ Onkyo TX-NR656 ⇒ SAMSUNG 65"LED/UHD/PQ1300/T2CS

    LG BP50NB40 USB Blu-ray