Choose the final timeline rate from the delivery requirement, then decide whether each source should play in real time or as intentional slow motion. Do not reinterpret every clip to the timeline rate merely to make their labels match. A 60 fps recording can retain normal duration in a lower-rate edit, or it can supply a slower visual passage; those are different decisions.
Separate four settings
Write down the recording rate, timeline rate, export rate and desired playback speed. The first describes captured frames; the others describe how the project presents them. “Make everything 24” is too vague for an editor to know whether vows should slow down.
Keep spoken footage at its intended real-time duration unless an intentional effect has been approved. Music montages may tolerate a speed change, but a question and its answer can become confusing when one partner's voice is stretched.
Confirm actual rates in the media properties. Values such as 23.976 and 24, or 59.94 and 60, are distinct; shorthand names should not replace the file's timing information.
Use reinterpretation for a deliberate effect
Adobe's frame-rate interpretation guide says that assuming another rate changes clip duration proportionally and affects audio. It is not a general command to improve footage.
For a simple arithmetic example, 600 frames captured at an exact 60 fps represent ten seconds. Playing those same frames at an exact 24 fps takes twenty-five seconds. That can be a planned slow-motion shot, but it cannot preserve a ten-second spoken response.
The calculation assumes those exact rates and a fixed frame sequence. It is an explanatory example, not a measurement of a customer's recording.
Match the source treatment to the shot
For a real-time 60 fps shot in a 24 fps timeline, let the editor handle its normal-duration rate conversion and review the visible cadence. For a slow visual insert, make the speed change intentional and decide what happens to its original sound.
Adobe's Speed/Duration documentation describes separate speed, pitch and interpolation choices. Treat them as controls to test, not a promise that the highest-quality-labeled method preserves every hand or occlusion correctly.
If a lower-rate shot does not contain enough motion samples for an extreme slowdown, shortening the slow passage or choosing another shot may be clearer than inventing additional frames.
A fictional mixed-source wedding sequence
A planned film includes a 30 fps interview, a 60 fps walk and a 24 fps generated fantasy shot. Its delivery requires a 24 fps timeline. The interview keeps real-time words; the walk becomes an approved slow-motion montage; the fantasy shot retains its native action timing.
The proposed review checks whether the couple's steps remain grounded, whether a hand crossing creates duplicate edges, and whether the narration still refers to the event at the correct moment. This fictional plan does not claim any interpolation or model test passed.
Export one representative sequence first
Include a dialogue cut, a fast movement and the slow insert in a short export. Watch at normal speed in an independent player, then inspect difficult frames. A smooth preview on the timeline is not enough if the delivered file changes cadence or duration.
Record the chosen treatment for each unusual source so revisions do not accidentally restore or remove slow motion. Shots from Imagild Film Studio can be combined with real footage in an external editor; the final timeline and speed decisions belong to that editing workflow.