Posts by nvdias

  • live tv green artefacts in LE11 nightly builds (RPi4)

    Made new tests with 2 Raspberry Pi 4.

    Both in the same lan network:

    RPi4 #1 -> LibreELEC 9.2.8, dvb-C dvb-S receiver + tvheadend server + tvheadend player addon

    OK

    RPi4 #2 -> LibreELEC 11 nightly build, tvheadend player addon, connected to RPi4 #1 (tvheadend server)

    All goes OK !

    Notes:

    • Using LE10 or LE11 in the server also works ok in this "distributed architecture".
    • tvheadend server is the same binary across every test. (4.3 nigthly build 2009).


    Result:

    The green screens artefacts are only appearing if using both tvheadend server + player in the same Rpi4 when running LE10/LE11.


    Hope this helps somehow in solving the problem.

  • live tv green artefacts in LE11 nightly builds (RPi4)

    Quote from popcornmix

    The sample file is corrupt (you can see complaints from VLC here).

    Now how decoders cope with corrupt data is variable. In general software decoders have more ability to minimise visible artifacts (i.e. replace missing data with nearby data).

    There is nothing that can be done about this, apart from not using the hardware decoder (which may have performance issues).

    I don't believe LE 9.2.8 will play that sample file flawlessly.

    Quote from smp

    The issue is that the stream gets corrupt when using a tv server and client on the same Pi + deinterlacing. This is totally RPi-specific.

    Thank you both for your comments.

    The strange thing here is that using the exact same hw configuration with le 9.2.8, plays flawlessly.

    What have changed in le 10 that makes impossible to use tv server + client in the same machine ?

  • LE10 & deinterlacing in RPi4

    Having some issues while watching tv.

    I've created a new thread.

    Hope it helps :

    Post

    RE: live tv green artefacts in LE11 nightly builds (RPi4)

    Some more tests and a sample:

    - Green Artefacts just appearing if using kodi pvr.hts addon viewer and tvheadend server in the same machine (libreELEC 11 in RPi4).

    - Artefacts appearing only after a Continuity Counter Error in tvheadend log;

    - Green Artefacts and Continuity Counter Error DO NOT APPEAR if the viewer is running in another machine (example: VLC in WINDOWS or KODI running from Android tv !

    The link bellow is for a sample file recorded in LibreELEC -> the green artefacts are displayed…
    nvdias
    March 9, 2022 at 10:19 PM

  • live tv green artefacts in LE11 nightly builds (RPi4)

    Some additional information:

    A)

    When watching tv with addon pvr.hts running in the same machine as tvheadend service:

    - LE 11 nightly build - green artefacts; (*)

    - LE 10.0.2 - green artefacts; (*)

    - LE 9.2.8 - ALL OK (no issues).

    (*) If I turn off "Allow Hardware acceleration with DRM PRIME" the artefacts disappear. But image loosed smoothness ...

    B)

    When watching tv by remotely connecting from another machine (windows pc with kodi, or vlc, or android tv with kodi)

    to libreelec tvheadend service:

    - ALL OK !


    So, the issue is common to LE10 and LE11 and ONLY when running pvr.hts in the same machine as tvheadend ...

    and with "Allow Hardware acceleration with DRM PRIME" activated.

    chewitt, popcornmix should I report this somewhere else ?

    thanks

  • live tv green artefacts in LE11 nightly builds (RPi4)

    Some more tests and a sample:

    - Green Artefacts just appearing if using kodi pvr.hts addon viewer and tvheadend server in the same machine (libreELEC 11 in RPi4).

    - Artefacts appearing only after a Continuity Counter Error in tvheadend log;

    - Green Artefacts and Continuity Counter Error DO NOT APPEAR if the viewer is running in another machine (example: VLC in WINDOWS or KODI running from Android tv !

    The link bellow is for a sample file recorded in LibreELEC -> the green artefacts are displayed if played in LibreELEC 11 RPi4, but almost unnoticeable if playing in VLC player in windows:

    https://mega.nz/file/Ebp2kLJB#08TEUe5pt2IMeLN8D0Gfg5wTjbeN1EsaTZGGQ_ykKVI


    Thanks

  • live tv green artefacts in LE11 nightly builds (RPi4)

    Quote from popcornmix

    Do you see the artifacts in recordings? If so, can you provide a short sample file that shows the issue?

    hi, in recordings they do not appear as green artifacts. anyway I will try to get a sample - more thinking where to share it.

    Quote from smp

    I had the same issue on a pi3. The issue was that when running both tvh client and server on the same pi AND using advanced deinterlacing method - green artefacts would appear from time to time, also continuity counter errors in tvh log.

    The solution was to use BOB deinterlacing instead of "advanced". However, BOB looks much worse than advanced.

    Another solution was to increase the arm_uc value, e.g.:

    Code
    # vcgencmd arbiter set arm_uc 12 0

    I don't have pi4 so no idea if this would work.

    pi4 using prime for deinterlacing. No options.

    changing arm_uc not producing any changes.

    But thanks for the suggestions.

  • live tv green artefacts in LE11 nightly builds (RPi4)

    I've been using the latest nightly builds on a RPi4.

    Since the introduction of deinterlace for RPi4, it was a big evolution for live tv watching (RE: LE10 & deinterlacing in RPi4)

    I've installed tvheadend server in LE11 and using the tvheadened pvr add-on to watch live tv on my RPi4.

    All ok except ... some green artefacts that appear from time to time in almost every channel.


    I'm using:


    Watching tv in KODI running on libreelec gives the green artefacts.

    As my tv is a SONY Android tv, i've installed KODI 19 in it and connected to the tvheadend server on my RPi with LibreELEC- in this case the image is stable without any artefacts.

    The same goes to the tv provider set-top which also plays flawlessly.

    So, the difference here is KODI20 in LE11 on RPi4 - any suggestions on how to fiddle with LE11 KODI20 to handle those green artefacts ?

    thanks

  • LibreELEC-RPi4.arm-11.0-nightly-20220213-fcba5db is restarting every 20 seconds

    Hi had the same issue.

    I've also compiled myself from git and had the same problems.

    In my case kodi was complaining about a missing python lib. (I believe pyhton was updated to 3.9 a couple of days ago).

    Similar to a problem I had reported in another thread,

    I've SOLVED the issue by "make clean" and re-building everything.

    Everything is stable now with the last source versions.

    As I do not know how the nighlty builds are made,

    I humbly suggest to the team to re-build them from scratch.

  • LE10 & TBS 5520SE on RPi4 // updated drivers [SOLVED]

    [FALSE PROBLEM ---- IGNORE THIS POST]

    well ... drivers are no working anymore.

    I've updated the patch file as the offsets changed (see attach) and it worked for builds compiled with version up to 2nd February 2022.

    After that, tvheadend cannot lock signal.

    dmesg reports errors:

    Code
    si2183 22-0067: err restarting dsp
si2183 22-0067: err set agc mode
si2183 22-0067: err set dvb-c mode
si2183 22-0067: err restarting dsp

    Any help will be greatly appreciated.


    linux-tbs5520se.patch.txt

  • ssh key type ssh-rsa not in PubkeyAcceptedAlgorithms

    I've been using LE 9.2.X for quite some time with ssd access via key pairs.

    I've started some tests with one of the last nightlty builds of LE10, and after following the same steps to activate the usage of the keys as with LE9, ssh keeps refusing the connection with this error reported in journal:

    userauth_pubkey: key type ssh-rsa not in PubkeyAcceptedAlgorithms [preauth]

    Any suggestions ?

    Thanks

    well ... the faster I asked the faster I got the answer 😁

    Anyway, here is the solution to help whoever may need:

    It was just a question of updating putty (the ssh client I use) to the last version (0.77 worked ok).

  • Reboot Button RPi4/Libreelec 10.0.1

    Pino GPIO3 (pin 5) --> GND (pin 6)

    add to /boot/config.txt

    dtoverlay=gpio-shutdown


    Grounding GPIO3 starts the clean shutdown process.

    After shutdown, grounding again power on the RPI.

    But .... Librelec will display a confirmation dialog for shutdown.

    To bypass that:

    edit:

    /storage/.kodi/userdata/keymaps/gen.xml

    add:

    <keymap>

    <global>

    <keyboard>

    <key id="61662">Shutdown</key>

    </keyboard>

    </global>


    I believe all this is already in the forum.

  • LE10 & deinterlacing in RPi4

    well ... I don't know in fact what to say...

    I understand the difficulties and the need to wait.

    I will probably continue with 9.2.8 in my main RPI4 andm and keep LE10 in the RPI4 testing.

    For movie watching, netflix, tv series, LE10 is just great.

    But for live TV, I've tried to disable DRM PRIME and force (software) deinterlacing, but

    but unless I'm doing something wrong, it is not watcheable

    there's an obvious lag, and probably the RPI4 is not able do do software deinterlacing with 1080i @ 50hz live tv.

    Any sugestions / tweaks ?