moonlight-embedded
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moonlight-stream
Bitrate appears to be limited around 10 Mbit/s on Raspberry Pi
NVidia Geforce Experience version: 3.13.1.30 Moonlight Embedded version: 2.4.6 Moonlight Embedded source: repository Moonlight Embedded running on: Raspberry Pi Moonlight Embedded running on distribution: Raspbian
Verbose output -verbose of Moonlight Embedded:
moonlight stream 192.168.178.79 -verbose -bitrate 60000
Moonlight Embedded 2.4.6 (PI;ALSA;EMBEDDED) Connect to 192.168.178.79... NVIDIA GeForce GTX 660 Ti, GFE 3.13.1.30 (gs_04_05_23698325, 7.1.405.0) Platform Raspberry Pi (Broadcom) Loading mappingfile /usr/share/moonlight/gamecontrollerdb.txt Stream 1280 x 720, 60 fps, 60000 kbps Initializing platform...done Resolving host name...done Starting RTSP handshake...done Initializing control stream...done Initializing video stream...done Initializing audio stream...done Initializing input stream...done Starting control stream...done Starting video stream...done Starting audio stream...done Starting input stream...done
What is the expected result? I expect a stream running at a bitrate of 60 Mbit/s that shows significantly less compression artifacts than running at the default 10 Mbit/s.
What happens instead of that? There is no visible increase in image quality compared to running at a bitrate of 10 Mbit/s and image quality at 10 Mbit/s (and at 60 Mbit/s) leaves quite a lot to be desired. Especially soft color gradients are turned into very rough stepped ones. Mind you the stream runs well no matter what the settings, there is no input lag and the stream never drops or anything. Only image quality...well...kinda sucks, no matter what I do. It seems like it is limited around 10 Mbit/s (decreasing further does decrease image quality). However I can find no explanation for this limit. I am expecting the answer to be something like "your graphics card does not support higher bitrates" or some such, but I haven't found anything, anywhere giving me a hint as to what's the cause.
Same for me. RPi3 B+ is not working as it was on my RPi3 B , low quality now matter what bitrate.
See my link here: https://github.com/irtimmer/moonlight-embedded/issues/711#issuecomment-448174490
It is quite possible that pushing your Pi above 40 000, simply reverts the setting to default 10 000, as I doubt that it can handle such high bitrate even at lower resolutions (720p). I think that 40 000 is an upper limit for the Pi 3 at 1080p60. Also the GTX 660 Ti could be a weak link in the chain here also. I had a GTX 660 at the time of my LG TV, and when I changed to a GTX 1070 my Moonlight experience improved a lot. It was way more stable. No more connection / stream drops, smoother experience overall on the stream client (RPi). Playing on my server / host without a stream was never an issue.
Personally at 30 000 on my old 39" 1080p LG TV I could not notice the artifacts. Now on my newer 49" Samsung 2160p TV, I could, so I bumped it to 40 000.
If you slam your head at the screen you could still see some artifacts, but sitting at a reasonable distance (as you should) from the TV, it should not be noticeable. (In the near future) you will never get pixel perfect mirror image, as you see on your PC, but with a reasonable tolerance, and distance from the TV it can be good enough.
It is quite possible that pushing your Pi above 40 000, simply reverts the setting to default 10 000
Interesting - seeing the same effect too. What mechanism would be reverting the bitrate and can it be overridden?
