degradation
Controls how the encoder trades off between resolution and framerate when bandwidth is constrained.
MAINTAIN_FRAMERATE: Prioritizes framerate, reduces resolution if needed
MAINTAIN_RESOLUTION: Prioritizes resolution, drops frames if needed
BALANCED: Balances between both
If not set (null), the SDK uses defaults based on track source:
Camera: MAINTAIN_FRAMERATE (smoother video for real-time communication)
Screen share: MAINTAIN_RESOLUTION (clarity is critical for text/UI)
Other/unknown: BALANCED
Note that a preference is always applied to video senders, so leaving this null selects the source-based default above rather than deferring to WebRTC's own implicit choice.