- available_range declared a zero duration for every clip (the media
was 'unusable', so Resolve invalidated all of them): it now covers
the whole media - video clips in the probed frame rate, audio clips
in the probed sample rate (no more hardcoded 48000/0).
- Gap ranges mixed time bases (a 24 fps block start, a 1.0 trailing
duration): gaps now stay in the sequence's time base, the trailing
pad in whole frames.
- Empty sequences (no clips) are skipped, so a lone edited sequence
exports as a bare Timeline root instead of a SerializableCollection
Resolve cannot read.
- FCPXML: an asset used on both video and audio tracks now declares
hasVideo AND hasAudio (the first registration's track kind used to
hide the other stream); asset durations recover with available_range.
