RPi4 troubleshooting

TugboatBill · log-2022-11-25-17.33.59.zip

Hi,

I have a RPi4 running 10.0.3. When I try to play 4K content it is choppy and unwatchable (I do get source is too slow messages). Regular HD is OK.

Connection is 1Gb.

I have the RPi connected to the same switch my workstation is connected to. If I play the same video file on my workstation using VLC it plays flawlessly. VLC shows 0 lost/corrupted frames, even after playing for an extended while.

File info using Mediainfo:

General

Unique ID : 213563078768604090078572071701482983224 (0xA0AAC0BA3A1C6E35AF826E8919AA4F38)

Complete name : \\fnas1\HD_Movies\The Shining\The Shining (1980) -4K.mkv

Format : Matroska

Format version : Version 2

File size : 28.3 GiB

Duration : 2 h 23 min

Overall bit rate : 28.2 Mb/s

Movie name : The Shinning 1980 UHD BluRay HDR10 2160p DD5.1 H265-d3g

Encoded date : UTC 2019-09-25 18:44:48

Writing application : DVDFab 10.0.9.2

Writing library : libebml v1.3.4 + libmatroska v1.4.5

Video

ID : 1

Format : HEVC

Format/Info : High Efficiency Video Coding

Format profile : Main 10@L5.1@High

HDR format : SMPTE ST 2086, HDR10 compatible

Codec ID : V_MPEGH/ISO/HEVC

Duration : 2 h 23 min

Bit rate : 27.5 Mb/s

Width : 3 840 pixels

Height : 2 160 pixels

Display aspect ratio : 16:9

Frame rate mode : Constant

Frame rate : 23.976 (24000/1001) FPS

Color space : YUV

Chroma subsampling : 4:2:0 (Type 2)

Bit depth : 10 bits

Bits/(Pixel*Frame) : 0.138

Stream size : 27.7 GiB (98%)

Default : Yes

Forced : No

Color range : Limited

Color primaries : BT.2020

Transfer characteristics : PQ

Matrix coefficients : BT.2020 non-constant

Mastering display color primaries : Display P3

Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2

Maximum Content Light Level : 1633 cd/m2

Maximum Frame-Average Light Level : 114 cd/m2

Audio

ID : 2

Format : AC-3

Format/Info : Audio Coding 3

Commercial name : Dolby Digital

Codec ID : A_AC3

Duration : 2 h 23 min

Bit rate mode : Constant

Bit rate : 640 kb/s

Channel(s) : 6 channels

Channel layout : L R C LFE Ls Rs

Sampling rate : 48.0 kHz

Frame rate : 31.250 FPS (1536 SPF)

Bit depth : 16 bits

Compression mode : Lossy

Stream size : 658 MiB (2%)

Language : English

Service kind : Complete Main

Default : Yes

Forced : No

Text #1

ID : 3

Format : VobSub

Codec ID : S_VOBSUB

Codec ID/Info : Picture based subtitle format used on DVDs

Duration : 2 h 16 min

Bit rate : 7 441 b/s

Count of elements : 1521

Stream size : 7.27 MiB (0%)

Language : English

Default : Yes

Forced : No

Text #2

ID : 4

Format : VobSub

Codec ID : S_VOBSUB

Codec ID/Info : Picture based subtitle format used on DVDs

Duration : 2 h 20 min

Bit rate : 5 784 b/s

Count of elements : 1189

Stream size : 5.82 MiB (0%)

Language : French

Default : No

Forced : No

Text #3

ID : 5

Format : VobSub

Codec ID : S_VOBSUB

Codec ID/Info : Picture based subtitle format used on DVDs

Duration : 2 h 18 min

Bit rate : 7 790 b/s

Count of elements : 1531

Stream size : 7.70 MiB (0%)

Language : German

Default : No

Forced : No

Text #4

ID : 6

Format : VobSub

Codec ID : S_VOBSUB

Codec ID/Info : Picture based subtitle format used on DVDs

Duration : 2 h 18 min

Bit rate : 7 562 b/s

Count of elements : 1525

Stream size : 7.48 MiB (0%)

Language : Italian

Default : No

Forced : No

Text #5

ID : 7

Format : VobSub

Codec ID : S_VOBSUB

Codec ID/Info : Picture based subtitle format used on DVDs

Duration : 2 h 18 min

Bit rate : 5 709 b/s

Count of elements : 1314

Stream size : 5.64 MiB (0%)

Language : Spanish

Default : No

Forced : No

Menu

00:00:00.000 : en:Drive to the Overlook

00:03:00.430 : en:The Interview

00:05:05.137 : en:Quite a Story

00:10:33.799 : en:Bloody Vision

00:12:08.394 : en:The Doctor's Questions

00:14:24.280 : en:Family History

00:17:37.932 : en:Chapter 7

00:20:30.896 : en:Chapter 8

00:24:58.622 : en:Doc Gets the Message

00:28:51.688 : en:Talk of Shining - and Room 237

00:34:10.215 : en:A Month Later: Bouncing and Exploring

00:40:28.843 : en:Tuesday: Curiosity for Danny, Rules for Wendy

00:46:00.925 : en:Thursday: Snowbound

00:46:52.226 : en:Saturday: Slipping Out of Touch

00:49:17.329 : en:Come and Play

00:51:16.240 : en:Monday: "I Love You, Danny"

00:57:01.918 : en:Wednesday: Room 237 Beckons

00:58:36.847 : en:Nightmares and Neck Wounds

01:02:37.170 : en:The Gold Room

01:06:05.795 : en:Words of Wisdom

01:09:00.762 : en:Halloran Shines; Jack Rages

01:16:52.316 : en:Danny Shines; Jack Rages

01:22:18.642 : en:Chapter 23

01:25:29.916 : en:Delbert Grady

01:31:41.162 : en:"Redrum! Danny's Not Here"

01:34:03.805 : en:Chapter 26

01:35:48.618 : en:Halloran Flies In

01:39:30.590 : en:All Work and No Play

01:43:49.932 : en:What Should Be Done With Danny

01:49:26.393 : en:Jack in Storage; Wendy in a Frenzy

01:54:24.441 : en:Grady Intervenes; Halloran en Route

01:58:44.617 : en:Chapter 32

02:01:09.554 : en:"Here's Johnny"

02:05:30.064 : en:On The Prowl

02:07:32.687 : en:Halloran Killed

02:10:23.566 : en:Into the Maze

02:12:10.089 : en:"Great Party, Isn't It?"

02:15:03.387 : en:Chapter 38

02:18:57.037 : en:The Overlook Claims Jack

02:21:16.343 : en:Chapter 40

Logs from the RPi are attached.

Is this too much for the RPi?

frakkin64 · November 25, 2022 at 6:29 PM

Try these recommended settings:

https://wiki.libreelec.tv/configuration/4k-hdr

It looks like nothing is whitelisted? I don't have this specific video, but I have content similar to it and no issues so far with playback.

TugboatBill · November 25, 2022 at 8:18 PM

I tried whitelisting it along with the other suggestions in the wiki, no joy.

**HiassofT** · November 25, 2022 at 8:49 PM

I noticed a couple of things:

First of all you are running LE 10.0.2 - please test with the current 10.0.3 release

You seem to have connected the HDMI cable to the wrong HDMI port of the RPi - use HDM0 as HDMI1 has limited capabilities.

You seem to be playing through the emby addon - have you tested with SMB or the file copied to a USB pendrive / HDD?

You didn't enable debug logging and from the looks of it also not adjust refresh rate, together with whitelisting the important modes as described in the wiki. Please to the latter, permanently, and the first when you still have issues after the steps above.

Then upload the logfile either with the log upload function in LE settings or with "pastekodi" via ssh - the logfiles via the SMB share are unfortunately missing important info (guess we should fix that...)

so long,

Hias

TugboatBill · November 25, 2022 at 10:02 PM

How do I upgrade to 10.0.3? I'm normally in auto update and it hasn't updated automatically past 10.0.2. If I set update to manual it doesn't show as a version.

Tried using the other HDMI port but no change (I did reboot).

Tried using a normal added video source (non Emby) but that didn't change anything. The video name for that test is Testvid.mkv and is a copy of the original 4K movie. FWIW I have Emby set to use native paths.

debug log is at http://ix.io/4gS3

Oh, this does appear to be a resource issue on the RPi4. When in debug the CPU usage is consistently in the 90% on all 4 CPUs and regularly will hit 100%.

I've been using NFS. I added another source to access the TestVid.mkv file using CIFS (direct, not Emby). Same result.

**HiassofT** · November 25, 2022 at 10:16 PM

See here https://wiki.libreelec.tv/support/update - simply copy the 10.0.3 to the update share and reboot.

As for the high CPU load - no idea, we need debug "pastekodi" log of 10.0.3, and you also could ssh in and check with "top" and "perf top" what's eating up the CPU resources.

so long,

Hias

TugboatBill · November 25, 2022 at 10:57 PM

I updated to 10.0.3. Turned on debug and started the mkv from the non Emby source. Problem is still there.

Here is the debug log http://ix.io/4gSd

Here are the results from "top" and "perf top" while displaying the TestVid.mkv video from the non Emby source (SMB).

**HiassofT** · November 25, 2022 at 11:28 PM

It seems ffmpeg is using software decoding which is too much for 4k - please verify if settings->player "Allow using DRM Decoder" and "Allow hardware acceleration with DRM PRIME" are both at the default (enabled) and "PRIME Render Method" is also at default (Direct To Plane)

so long,

Hias

TugboatBill · November 25, 2022 at 11:51 PM

Thanks! That fixed it.

RPi4 troubleshooting

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