* Use defaultdict for TimestampValidator._last_dts * Combine filters * Allow PeekIterator to be updated while preserving buffer * Fix peek edge case * Readd is_valid filter to video only iterator
* Use defaultdict for TimestampValidator._last_dts * Combine filters * Allow PeekIterator to be updated while preserving buffer * Fix peek edge case * Readd is_valid filter to video only iterator