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Non-native frame rate clip in Timeline – Temporal vs promoted
I’m wondering, when a clip with a non-native frame rate is cut into a Sequence (and then appears with a Temporal Adaptor icon) and is then promoted, does the Source Setting ‘Playback Frame Rate’ [Clip/Project] get overridden, such that, the speed settings applied in the Motion Effect Editor are created always using the Clip’s Frame Rate? So, if you typed 200% it would be 200% of the Clip’s original frame rate?)
I did a test where I created a Sequence and cut two parts of a Clip with a non-native frame rate, its Source Settings set to Clip’s Frame rate, so they both had a Temporal Adaptor. I promoted the second clip in the Sequence, so its icon changed to the Motion Effect icon.
I Duplicated the Master Clip and in Source Settings, changed its ‘Playback Frame Rate’ to Project.
I duplicated the Sequence and relinked it to the duplicated Master Clip. When I synced the 2 Sequences, the first Clip (with the Temporal Adaptor) was in sync at the first frame but then drifted out by the end. But the promoted clip was in sync the whole time.
(I notice that, in the Timeline text, the clip with the Temporal Adaptor has the text (23.98FPS) but the promoted Clip will have a percentage speed.)So again, are speeds treated/handled differently once promoted?
Thanks.
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1 Reply
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Yes, speeds are handled differently once a clip is promoted. Before promotion, the Temporal Adaptor dynamically adjusts the clip to match the Sequence’s frame rate, and any changes in Playback Frame Rate in Source Settings affect how it plays back. But once you promote the clip, it locks in its speed based on the original clip’s frame rate, meaning speed changes (like 200%) are calculated from that, not the adapted frame rate.
That’s why, in your test, the first clip (with the Temporal Adaptor) drifted out of sync when you changed the Playback Frame Rate, while the promoted clip stayed in sync—it was already locked to its original frame timing. If you want consistent speed behavior, promoting clips before applying speed changes is the way to go.
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