I finally managed to figure it out. The reason why the above config files don't have any effect is simple, but not obvious: There are two variants of the Moonlight front-end: moonlight-embedded and moonlight-qt. The files in /recalbox/share/system/configs/moonlight are for moonlight-embedded, but Recalbox uses moonlight-qt on RPi4. Therefore, another config file is used which is located at: /recalbox/share/system/.config/Moonlight\ Game\ Streaming\ Project/Moonlight.conf.

It was not clear to me how to modify the config to switch to 1080p. The file is normally managed through the Qt front-end and not directly edited. So I installed moonlight-qt onto another Linux box, applied the settings through the UI and checked the config file. There required settings are part of the [General] section:

[General] width=1920 height=1080 fps=60

Porting the settings over to my RPi4 Recalbox finally made it stream my 1080p desktop in 1080p! Looks much better now!

Since you are mentioning WAN (and not LAN):

AFAICS the current Moonlight.sh script will always assume that the machine is on the local network and append .local to the host name. According to the Recalbox wiki, the Moonlight.sh script needs to be modified to work with IPs instead of hostnames. The Moonlight wiki contains an extensive guide for setting up game streaming over the internet. The guide recommends to pair the server while still being on the same network. If this is an option, it is probably easier than modifying Moonlight.sh. Once that's done, you can manually adjust the config files with the public IP of your server and set up the port forwarding if necessary.

@lmtes

https://wiki.recalbox.com/en/tutorials/games/moonlight/moonlight-setup

Alors je viens d'essayer et ça fonctionne.

A chaque MAJ de GFE (et à chaque installation en fait), faut refaire la manipulation.

Tu te co sur ta recalbox en SSH puis :

/recalbox/scripts/moonlight/Moonlight.sh find /recalbox/scripts/moonlight/Moonlight.sh pair /recalbox/scripts/moonlight/Moonlight.sh init

Ensuite, je relance Recalbox, je go sur Moonlight et je choisi Steam.

Si j'ai l'écran noir :

Je vérifie bien que Big Picture s'est lancé sur mon pc Je me co sur le frontend de ma recalbox avec un navigateur Je vais dans la section Dépannage Je clique sur Redémarrer ES.

Là j'ai bien l'image qui apparait mais j'ai le son de la recalbox. Je conseil de choisir le jeu depuis ton pc car si tu lance depuis la recalbox, vu que tu as redémarré ES la manette va fonctionner et sur ton pc ET sur la recalbox (donc tu risque de lancer un jeu de la recalbox en plus).

Voilou

@Zing Totally makes sense. I always noticed the French community being larger, I just never thought to check. Well again, thank you so much for sharing. I know where to continue to do my research now, thank you!

@Zing thanks, so i will watch out for an nvidia card because i really want to play Nidhogg on my arcade. thanks

Hi dude, I have a similar problem, I tried to ask for help to the french community, but no response : https://forum.recalbox.com/topic/22530/problème-streaming-moonlight-recalbox-7-x-et-retour-es

For me :

RPI 4 & GFE 3.10.0.95 & Recalbox 7.0.1 Appairing & game list OK TV Screen & game resolution 1080p Game started on PC but TV black screen and i can control the game with my controller When I quit the game : RPI wait something and i've a black screen I did not find any log file