Use low quality layer settings for non-simulcasted streams

@@ -513,7 +513,10 @@ internal constructor(
         var hasChanged = false
         var hasChanged = false
         for (quality in qualities) {
         for (quality in qualities) {
             val rid = ridForVideoQuality(quality.quality) ?: continue
             val rid = ridForVideoQuality(quality.quality) ?: continue
-            val encoding = encodings.firstOrNull { it.rid == rid } ?: continue
+            val encoding = encodings.firstOrNull { it.rid == rid }
+            // use low quality layer settings for non-simulcasted streams
+                ?: encodings.takeIf { it.size == 1 && quality.quality == LivekitModels.VideoQuality.LOW }?.first()
+                ?: continue
             if (encoding.active != quality.enabled) {
             if (encoding.active != quality.enabled) {
                 hasChanged = true
                 hasChanged = true
                 encoding.active = quality.enabled
                 encoding.active = quality.enabled