After my download of segments has completed and in process of muxing and saving, it consumes tons of memory (like 4-6GB), but the final MKV file is only 1.46GB. And on several occasions I had to manually kill Firefox to prevent my MacOS freeze up.

Is this normal or I need to tweak some settings? I'm on Firefox 146.0.1 (aarch64), version 5.2.0.

Also, can we add the feature of auto deletion after saved to local files?