fix(screenshare): remove adaptive streaming

It never helped reducing resolution for tile changes or for bandwidth issues.
FPS reduction will be handled by the browser.

Author: BreadGenie

frontend/src/composables/useMeetingLogic.js

@@ -897,7 +897,7 @@ export function useMeetingLogic(meetingState, meetingId, options = {}) {
 						video: {
 							width: { ideal: 1920, max: 1920 },
 							height: { ideal: 1080, max: 1080 },
-							frameRate: { ideal: 10, max: 30 },
+							frameRate: { ideal: 10, max: 20 },
 						},
 					},
 				);

frontend/src/utils/media/TransportManager.ts

@@ -172,7 +172,11 @@ export class TransportManager {
 	getVideoEncodingConfig(source: "camera" | "screen" = "camera") {
 		const decision = this.getVideoEncodingDecision();
 		const isScreen = source === "screen";
-		const strategy = isScreen ? "simulcast" : decision.strategy;
+
+		// no adaptive streaming for screensharing
+		// as we don't reduce resolution for screenshare
+		// and fps is handled by the hint in the browser in case of congestion control
+		const strategy = isScreen ? "single" : decision.strategy;
 		const scalabilityMode =
 			strategy === "svc" ? decision.scalabilityMode : null;
 

frontend/src/utils/media/encodings.js

@@ -19,12 +19,10 @@ export const svcEncodingTemplate = (scalabilityMode = "L3T1") => [
 	},
 ];
 
-// layer 0: medium quality (800 kbps)
-// layer 1: high quality (1.5 Mbps
-export const screenEncodings = [
-	{ maxBitrate: 800000 },
-	{ maxBitrate: 1500000 },
-];
+// no adaptive streaming for screensharing
+// as we don't reduce resolution for screenshare
+// and fps is handled by the hint in the browser in case of congestion control
+export const screenEncodings = [{ maxBitrate: 2000000 }];
 
 export const videoCodecOptions = {
 	videoGoogleStartBitrate: 2000,