Occasional poor quality when streamed video is static

[CubicPants]

Is there an existing issue for this?

• I have searched the existing issues

Is your issue described in the documentation?

• I have read the documentation

Is your issue present in the nightly release?

• This issue is present in the nightly release

Describe the Bug

I'm not entirely sure how to describe this, apologies in advance.

To reproduce the issue, open Moonlight and connect to Desktop.
Scroll through a text document in a PDF viewer quickly enough to see frames with very poor quality, then stop completely, hand off the mouse so that there are no more changes.
If you time it right, you should end up with a very poor quality, persistent frame that does not correct itself until you move the mouse again.

I had to lower the bitrate from 20Mb/s to 18Mb/s when I switched from Gamestream to Sunshine, in spite of having 1Gb wired LAN between laptop and desktop. At 20Mb/s I get bitrate warnings and stutter.

Expected Behavior

If a received frame is poor quality, expect a new frame to be sent even if the video being streamed is static.

Additional Context

No response

Host Operating System

Windows

Operating System Version

Windows 11 Pro Version 10.0.22621 Build 22621

Architecture

64 bit

Sunshine commit or version

2023-01-06T01:00:08Z - effa98f

Package

Windows - installer

GPU Type

Nvidia

GPU Model

GeForce RTX 2070

GPU Driver/Mesa Version

527.57

Capture Method (Linux Only)

No response

Relevant log output

No response

[cgutman]

This is caused by our variable rate encoding. Because we aren't continuing to encode frames when the desktop is static, the encoder doesn't have the opportunity to fill in additional detail in the following frames.

We plan to move to fixed rate encoding for v0.18 which will fix this issue.

[apoklyps3]

I noticed this in too in steam big picture mode.
very blurry, glad to hear it's getting fixed.
keep it going guys. nvidia's gamestream won't be missed.

[CubicPants]

This is caused by our variable rate encoding. Because we aren't continuing to encode frames when the desktop is static, the encoder doesn't have the opportunity to fill in additional detail in the following frames.

We plan to move to fixed rate encoding for v0.18 which will fix this issue.

Thank you for the fix in #754, cgutman. Much appreciated.

[ReenigneArcher]

Please don't close issues until the issue is fixed in a stable release.

[LizardByte-bot]

This issue has been fixed and will be available in the next release.

[crappy624]

Hello,
the issue persists when there is a dynamic Image with Static parts. For example a Game with a Static Text for a Mission objective on the Screen.
Should i Open a different issue ?

[ReenigneArcher]

Hello, the issue persists when there is a dynamic Image with Static parts. For example a Game with a Static Text for a Mission objective on the Screen. Should i Open a different issue ?

No... discuss with us on Discord.