Assemble 24fps Clips into a 30fps Remotion Composition

Generating the shots was one stage. Making the product name, transitions and sound land on the intended frames was another.

This implementation note records the inputs, failure modes and checks needed to make the workflow reviewable.

Place sound on the same timeline

Music and effects were placed at frame positions, with fades where needed. The final mix in this record measured about -17.5 LUFS and -2.7 dB peak; these are project measurements rather than universal loudness targets. Review speech and music together after export, as a correct source track does not establish a correct final mix.

Keep copy and motion editable

We used Composition for the complete timeline and Sequence for the cuts, with exact text and diagrams rendered as code. Letter animations were offset by three frames. Where clip duration differed from the allotted cut, playback rate was adjusted from the source duration and cut length. Preserve the approved wording outside the generated footage so revisions do not require a new video generation.

Define the output timeline

Our fictional coffee sample uses five cuts in a 30-second film. Input clips were 24fps at 1080p; the output composition was 30fps and 900 frames, exported as H.264. The recorded environment was Node 24, Remotion 4.0.532 and Apple Silicon. Fixing the duration and frame rate first made the other timings explicit.

Checks to carry into the next project

• Fix duration and fps before timing the layers.

• Keep approved copy in an editable layer.

• Inspect the exported file with audio enabled.

Keep a reproducible record of the configuration and inspect the final exported artifact. An automation success message is not a content review.

Watch the production examples

These assets come from the documented project. Fictional in-house samples illustrate our process; they are not evidence of client sales results.

Watch this production clip (MP4)

Watch this production clip (MP4)

Source and production inquiries

Adapted from the original FableBridge production note (Japanese). Model specifications, estimates, prices and schedules are records from the source date, not guarantees for a new project. The source includes further conditions and references.

FableBridge, operated by Shian Co., Ltd. in Tokyo, produces product and service videos, landing pages and advertising campaigns. Share your audience, placement, preferred length and timeline through our consultation page or email [email protected]. Explore our work on the official website.