shouldDrop method
Return true if the next non-key frame should be dropped instead of encoded. Keyframes are never dropped (recovery must be possible).
Implementation
bool shouldDrop({required bool isKey}) {
if (isKey) return false;
if (_consecutiveDrops >= maxConsecutiveDrops) return false;
final windowBits = targetBitrateBps * bufferWindowSeconds;
final fullness = _bufferBits / windowBits;
return fullness > dropOvershootFullness;
}