Building latest moonlight qt version

[zetalex]

Hello:

 

I am tyring to build the latest version of moonlight-qt (6.0.0).

Up until now, I succeded by removing the disable-libdrm and disable-wayland to enable hardware acceleration and use H264, H265 and AV1 all of them through hardware acceleration.

However, I get huge decoding times and they are even variable, ranging from 40ms to 300ms depending on what is going on in the streaming.

The 4.3.1 version provided by @amazingfate works very good at 4ms decoding time but I would like to test the new AV1 encoder and features from the latest version.

What steps should I follow to get it working correctly?

 

Thank you in advance

[amazingfate]

Decoding time is ok if there is no frame drop.

[zetalex]

Hello again @amazingfate:

I did some more tests to check what you said.

First, there are no frame drops, video is smooth using any decoder. 

Regarding decoding time, the behaviour is a little bit strange: the higher the framerate that moonlight renders, the lower the decoding time. When I am running 120fps, the decoding time is 35 ms which is as low as I managed to get it to.

 

In your 4.3.1 moonlight that you have in your ppa at launchpad I get 4ms decoding time. Sorry for the dumb question, I am just trying to understand: did you apply any patch or did anything in the source code to make the decoding time lower?

 

Thanks in advance

[amazingfate]

4.3.1 moonlight is linked to ffmpeg 4.4, while new moonlight is linked to ffmpeg 6 because libavcode-dev in my ppa is updated to 6.0.

Decoding time caculation is ffmpeg releated. I think moonlight can't distinguish decoding time and rendering time with new ffmpeg.

[zetalex]

Thanks for answering so quickly.

I didnt know that the decoding time measurement was performed this way. So, there shouldnt be any difference between both versions performance then. I didnt try to play much and latency didnt seem as noticeable. 

 

Thanks for sharing your knowledge again!

 

PS: I put another post about linux kernel 6.1 not booting after updating some libraries from your ppa, could you take a look or tell me how can I debug it?

[q-bert]

@zetalex Were you able to use 4k120? If so, how did you enable 4k120 in Linux? I am not able to set the display (my TV) to 4k120, only 4k60... My TV's HDMI port is definitely a 4k120 port (verified with my PC and Nvidia GPU).
 

Have you seen this tutorial? I lists all required steps if you want to use hardware acceleration on RK3588 with 6.1 kernel.

https://jellyfin.org/docs/general/administration/hardware-acceleration/rockchip

 

[zhonghuihong]

@amazingfate @zetalex I tried to compile version 6.0 of Moonlight with libavcodec-dev 6.0.1 from amazingfate's ppa. However, I got significant decoding times too and noticeable lag when moving the mouse. After reading amazingfate's post, I recompiled it using libavcodec-dev 4.4.2. Now, the decoding time is below 10 ms and noticeable lag is gone.

[q-bert]

@zhonghuihong could you please list all required steps? I build moonlight-qt following their instructions, but I get a segmentation fault when I run the app.

[zhonghuihong]

@q-bert It seems like you might have missed some dependencies while building, such as egl. Without the start log, it's difficult to point out why. I've uploaded a compiled moonlight-qt 6.0 binary file. Just make it executable with chmod +x then enjoy it. 

https://drive.google.com/drive/folders/17hK8OjAUbbXZNHlfMHf7VH-iqcUmBz7Q?usp=drive_link

Edited July 1 by zhonghuihong
typo

[q-bert]

@zhonghuihong thank you!

[q-bert]

@zhonghuihong I get this error:
 

./moonlight6: error while loading shared libraries: libavcodec.so.58: cannot open shared object file: No such file or directory

How did you configure your build and where do you have ffmpeg?
Here is how I build it (I did not change any directories):
https://github.com/nyanmisaka/ffmpeg-rockchip/wiki/Compilation

[q-bert]

@zhonghuihong please ignore my previous post. All good now.

[luizkun]

Hi @q-bert , would you like to guide my how to fix missing libavcodec.so.58 and libavutil.so56 issue ?
I tried to make symplink from libavcodec.so.60 and  libavutil.so58 , but it showed missing version 'LIBAVCODEC_58' not found

[luizkun]

Hi @amazingfate , would you mind help us upload your moonlight 6 package to your ppa ? 

[q-bert]

@luizkun Sorry for my late reply, I totally missed your message. As far as I remember I updated packages (apt update etc.) and followed the steps on moonlight's GitHub page:

https://github.com/moonlight-stream/moonlight-qt