Posts by mo123

Quote from joelones

Hello Guys,

Great work on the support for this platform!

I however have an issue with mpeg4 decoding on my Rock64 (2gb). I'm currently using the official 9.2 build from (Rockchip – LibreELEC) and from what I understand mpeg4 decoding is done in software. I need to remain at kodi 18.x , are there any other build that have mpeg4 hw enabled and are at 18.x?

Many thanks for all the hard work...

The rk3229 images posted recently have mpeg4 hardware acceleration added.

I'll try to see if I can build a RK3328 image from that code.

Can you send me a mpeg4 sample video you have problems with then I can test it on rk3229 and rk3328?

Quote from k7k8

I recorded the image with the help of LibreELEC USB-SD Creator, installed the card in the slot, turned on the power and ... nothing.

Then try one of the other dtb files for booting.

If it doesn't work then perhaps your device can't boot from micro-sd cards.

Quote from k7k8

Tell me, please, how to run your assembly of LE on this box? Thanks.

Write it to a micro-sd card with etcher.

Quote from knaerzche

chewitt

I saw you did. As far as I'm concerned RK322x (with the exception of hdmi-ip-block and dram-controller) is a combination of RK3288 and RK3328 and it should be relativly easy to port it - when looking at rk322x.dtsi\dts\boot\arm\arch - kernel/git/mmind/linux-rockchip.git - Linux Rockchip kernel tree most (if not all) work is already done

For me at this point it makes no sense to port it now: current mainline does by far not support as much features as current rk-4.4-tree does. I'm not sure, if its that clever that a distro as LE switches to mainline so early - it's a political decision you made - in contrast to CE. Current LE-master tree is still using an almost 1.25 year old rk-4.4.-tree with A LOT enhancements/fixes from rk missing (my tree is more or less up to date)

Main problem for me at this point: They dropped the driver for dmc-controller in mainline - which means all features for dram-frequency-switching (at kernel time) is no available now and device will always run in the (propably very low) freq, at which it was initialised at boot time

Nevertheless: I will merge Kwiboo's-mainline tree in a branch and see whats happening

mo123

Forget what I wrote about IR-Stuff: I never merged this change in my tree - what you did with ir is perfectly ok. I'm going to merge your changes (with a seaperate dts) in my tree.

Just saw that I have another RK322x-device with ap6212 wifi, I will try to get it working.

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If you can get ap6212 wifi working on your other device, it would be great.

Then most likely only the dts file gpio pin numbers for the wifi will need changing for my device which I already did.

Quote from Fernando

Hi Chewiit.

Thanks a lot for your explanation.

Since your post has been around for a long time, I'd just like to know if anything has changed: I shouldn't find an image for LibreELEC for RK3229, ok?

You can check if the RK322x LibreELEC I built can work on your device.

Wifi and ir remote might not work if your device is different.

Set the UI to 720p for better performance.

It is based on this repo - GitHub - knaerzche/LibreELEC.tv: Just enough OS for KODI

MEGA

Confirmed working

- 10-bit H264/H265 video playback support
- Mpeg2/H264 Deinterlacing working
- Mpeg2, Mpeg4, H264, H265, VP9 all working
- Ethernet support
- IR Remote support
- Auto frame-rate switching support

Quote from knaerzche

Didn't know, that there are people who are interessted in this device besides me

I did this GitHub - knaerzche/LibreELEC.tv: Just enough OS for KODI some days ago ... If you know how to build LE, this is your thing.

Other than current LE buildsystem it uses (almost) latest Rockchip 4.4 kernel and (almost) latest mpp. Currently there are 4 supported TV boxes: a95rx1, hk1mini, d88 (hdmi-stick), v884k and v88mars. If your device isn't listed v88mars build should work on all devices ... LE is working great besides one very anyoing bug: Exactly 10 minutes after startup the screen starts flickering - you'll have to login via ssh a restart kodi - after that its running for days or weeks without interruption. It working soooooo much better and faster than android on these boxes ... comparable to Allwinner H3. Don't expect to much according to HEVC-4k-10bit streams ... its working but almost always the sound isn't in sync. 8bit works great ... and: no HDR at all

See https://github.com/knaerzche/libreelec.tv/tree/master/projects/rockchip/devices/rk322x for build instrucations

Very interesting, must have been a lot of work.

I will try to built it.

I have a AP6255 wifi device so will try to see if an existing dtb works and try to modify it.

Hope you can fix the flickering, maybe updating to the latest kernel, libmali, drm fixes it?

Maybe there are also changes from joern-p that improves things on rk322x?

Joern-P (Jörn Petersen) / Repositories · GitHub

RK322x hardware unfortunately doesn't support HDR or fractional frequencies, otherwise it could have been the cheapest devices to run LibreELEC on with most features available.

Quote from Marius95

I just upgraded my old Raspberry Pi 3 with a new Asus Tinker Board S. I have a problem with some refresh rates.

Video example here (80MB file): tinkerboard-hdmi-flicker.mkv

My hardware:

Asus Tinker Board S, the official power source from RPi 3B+, 1.5m HDMI cable, Panasonic ST50 (plasma screen, 2013).

Latest offcial LibreELEC

It seems that refresh rates 23.976 and 59.94 Hz are not supported on Tinker Board?

- 1920x1080p 60Hz = works

- 1920x1080p 59.94Hz = flickers constantly

- 1920x1080p 50Hz = works

- 1920x1080p 24Hz = works

- 1920x1080p 23.976Hz = blank screen 95% of the time, some very distorted image sometimes appears

- 1280x720p = same as 1080p

I tried:

- changing power source = didn't help

- changing HDMI cable = didn't help

- changing HDMI mode (RGB / Ybr422 / Ybr444) = didn't help. Using 422, the flickering corrupts colors, not just the image.

- change TV (a smaller Panasonic ST50) in another room = didn't help

- reverse power plug, try other wall socket (ground loop?) = didn't help

- put back RPi 3B+ = no problems with the same setup

- other OS = Official Android for TB doesn't have these refresh rates available. Official Debian for TB - I don't know how to change the refresh rate.

Is this problem known? I couldn't find anything about it. Any ideea what causes it?

Thanks.

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The Tinkerboard doesn't support fractional frequencies since it uses a soc that was released in 2014 that doesn't have the hardware support for it.

You will only get 24, 25, 30, 50, 60hz playback support.

You can try to use an advancedsettings xml file to force 23.976hz to 24hz or enable sync to display in Kodi/LibreELEC's settings.

To use fractional frequencies, you need a RK3328 or RK3399 device.

Hi

Testing on RockPi 4 RK3399

Working

- Mpeg2, H264

Not working

- Wifi, bluetooth (Is working on Manjaro Linux with 5.3 kernel)

- 10 Bit Color H264/H265

- Fractional frequencies 23.976, 29.97, 59.94hz not available

- HDR

- SD Xvid/Divx videos have corrupted blocks during playback

What is the new Boot Android from emmc options?

Quote from totalgaara

I come back with some bad news unfortunatly.

Video playback in youtube as ElBoluTony say work fine, like youtube.

The reason why we can"t play 1080p (and 720p, it's not pleasant...) is because the Netflix addons and the Amazon prime video extension use the CPU to "decrypt" windevine DRM protected content.

Our rock64 has only L3 Windevine, while we need L1. So that L1 is "emulated" and use a lot of CPU ressources, because the GPU is in this case : totally useless , that's why the playback is not good, Rock64 is not powerfull enough...

Don't know what we can do more, i love that device, but seriously i start to hate it, we can do nothing on it... Android TV, you can dream to use netflix or amazon prime video app, even if it was, it will be SD video playing because of L1 DRM

Unfortunatly on lLibrelec, we have a chance but the L1 emulation use too much power, don't know if it fixable

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I already posted several LibreELEC builds for MVR9, Rock64, ROC CC with 720p Netflix software decoding support.

But seems no one even uses it. Search for it in the forums.

Devices like the RockPi 4 RK3399 can even decode 1080p Netflix in LibreELEC with my image.

hexxx

Hi

Please test this image for the added audio jack code.

LibreELEC - RockPi 4 - Operating system distributions - Radxa Forum

Quote from hexxx

Hello I have a rockpi4b sbc with libreelec LibreELEC-RK3399.arm-9.1.501-rock-pi-4.img.gz installed. I have problems enabling audio out from the analog 3.5" jack directly from libreelec. I get only audio from HDMI or if I plug a USB dac.

I have tried HDMI, analog and ES8316 analog and nothing seems to work.

if I run allay -lL I get the options indicated in the attached pictures. Please advise to enable analog out.

Regards

Hi

I fixed the audio jack problem.

You will have to wait until I build a new image in a day or 2, then you can test if it works.

Everyone getting crackling audio

Please post LibreELEC debug logs if you can, then it can help Rockchip to look into the issue faster and determine the cause.

What happens if using interactive governor?

Have you tried setting the refresh rate switch form 'On start/stop' to 'On start' only in the Display Settings?

Rockchip devices doesn't work the same as Amlogic.

You have to write a new ir remote driver for the kernel if your remote doesn't work.

Quote from ogggi

I have problem with playing video with resolution 960x540 qHD with hevc, playing only sound. Other videos no problem.

I have installed release LibreELEC-RK3328.arm-9.1.501-rock64.img.gz

What could I set?

Can you post some sample videos?

It would be interesting to test it on different Rockchip devices.

I build a new image for RockPi 4 if anyone is interested.

LibreELEC - RockPi 4 - Operating system distributions - Radxa Forum

Quote from Menion

Does not work on mainline linux

It's for Amlogic devices running Android Kodi or CoreELEC so won't work on Rockchip devices.

I already tested it on an Amlogic device and it worked, shows a lot of useful video and display info.

But I hope someone will be able to modify the addon to get Rockchip video parameters so it can be displayed when you press 'o', would be very interesting.

Quote from easyfab

I see some new patches for H.264 decoding : LKML: Ezequiel Garcia: [PATCH v5 00/11] media: hantro: Add support for H264 decoding

Is it good for us if this land mainline ?

Yes, since Linux OS's like LibreELEC, Armbian, Manjaro etc. will then also have out of the box video playback capabilities if using the latest mainline kernel without any tweaking, special drivers or old kernels that need to be used.

Only H265, VP9 I think must still be added since mpeg2, mpeg4, H264, VP8, HDR, HDMI CEC I think are already far developed for the mainline kernel.

The open-source Mal GPU Panfrost, Bitfrost drivers landing in the mainline kernel will also help a lot for the graphics acceleration to have a complete Linux experience.