Posts by mmpp

To me this sounds like a hardware defect of the sd card. I prefer the flexibility of the sd cards, and had not trouble so far.

zed85: You could restore the original Android version to flash. This would provide you with a known starting point and also a means to de-brick your box should anything go wrong with the flash install.

My MXQ Pro 4K (S905) works with the thermal driver enabled, but it only starts from a cold boot. After a reboot it is stuck on the S905 logo. As I use a switchable power socket to start and stop the device, I can live with this.

I have seen this with a few of my hevc encoded files a while ago (on scenes with very different colors on left and right).

Need to check if it still exists in version 012.

Power on from remote needs to be supported by the U-Boot bootloader on the S905(x) box. Of my boxes, the wetek hub implements this properly: I can power down in Android as well as libreelec with the remote or by command line, and the box will power up again using the included remote control. The MXQ Pro will not power down in Android, but simply switch the HDMI signal off/on when I push the button on the remote. If I shutdown by command line or in Libreelec, the box will not power on again using the remote.

As far as I know, the S905 bootloaders do not support power on from USB devices (keyboards, external remotes).

Thanks for the very good writeup!

The hevc files that I found on the internet as well as those that I created myself are using 4:2:0 subsampling. The same is true for the DVB-S2 4k hevc streams I can receive from Astra, Hotbird, and Astra2.

My demo files are from: Demo UHD-3D - Ultra-HD / 4K / HDR / 3D
I use handbrake and staxRip to convert my own videos. Both x265 software encoding and nvidia hardware encoding use 4:2:0 by default.
[hr]
I just checked, the hevc main and main10 profiles (which are the only ones the s905(x) does in hardware) only support 4:2:0 subsampling.
To play your files, you either need a media player with a stronger cpu or you re-encode then using either the main or main10 profile.

I updated my hub, and found that chapter seeking in mkv files with h.264 video no longer works. Playback after the seek will either be stuck completely, or seek to almost the right point (a bit early), but then video will play too fast with complete out-of-sync audio. My test files are mkvs from blurays created with makemkv located on a SMB connected NAS (gigabit network).

To reproduce: Play mkv file with chapter marks, seek to the next chapter(s) by pressing "up" on the remote. Time-based seeks ("left" and "right") can also trigger the playback issue, but this is not as reproducible.

I have just downgraded to v011, and the problems with seeking are gone again.

As the filenames indicate, these videos use 4:4:4 or 4:2:2 coding for the YUV colorspace. (See YUV - Wikipedia for more info)

To my (limited) knowledge, 4:2:0 is the usual coding for consumer video, and hardware decoders are limited to this. The S905(X) thus needs to decode your sample videos in software, and for 1080p videos this is far too much for the 4-core ARM SoC.

Try it with my Wetek Hub and some 4k demos, on a FHD 1080p TV. No significant change.

Maybe it is specific to the S905X?

I can trigger the buffering during playback of 4k files from SMB on my MXQ Pro with the LG 4k Demo "Paris": Demo Ultra-HD - LG Demo Paris

The wetek hub has no trouble playing it on the same network.

Edit: This file is >100MBit/s, so it is not a good example... Sorry for that.

I can live without temperature sensor.

The setting in "system" is the default refresh rate. If changing this to 50 made it worse, the frame rate switch on playback does not occur. Please check your settings under "Video-Playback"

Directly under the setting for the "Adjust display refresh rate: on start/stop" is a setting to adjust a small pause for the refresh change to take effect.
You might need to set settings level to "expert" (bottom left of screen) to see this setting.

Quote from GeToChKn

KSZAQ, do you have a paypal donation, I'd send you a few bucks for your efforts.

His paypal link is on the end of this post: LibreELEC

You can place your own remote.conf in the configuration directory. The easiest way is to enable Samba on your MXQ and use the windows file explorer to access the box.

I use a S805 and two S905 boxes to stream media from my NAS. I have no trouble with high-bitrate blu-ray images, even on the S805 (which uses a USB ethernet dongle) or the MXQ (which is 100MBit only). My NAS is connected with Gigabit LAN.

Buffering issues indicate that the bandwidth from the box to the NAS is less than the average bitrate of the files, so the buffer slowly drains over time and at some point in time playback stops to wait for the buffer to be filled again.

You can try:

• use LAN instead of WLAN
• check the read speed of your NAS from another computer

if you already use LAN:

• check if the LAN connection is full duplex and your switch/router is not using any "eco" settings on the ports.
• change the cables
• connect NAS and box directly to rule out cable or other connection issues

Please describe "lags" further. Is movement jerky, especially when the camera pans right<->left?

You can try adjusting the settings for video playback: do not activate "sync to display", but set to "adjust refresh rate" with "on start/stop". Depending on your tv, you might have to adjust the time for this refresh rate switch.