Video FPS Converter

This tool computes how a project's frame rate change affects frame counts and playback duration. It helps editors and VFX teams align footage to a target project FPS and evaluate whether to drop, duplicate, or interpolate frames. Conceptually, it treats timing as a relationship between frames and time: N frames at Fs frames per second correspond to time T = N / Fs. When Ft is chosen, the tool estimates the new frame count required to cover the same duration, or the new duration for a given frame count. It supports two strategic modes: preserve_duration keeps the original playback time and adjusts frame count, while preserve_frame_count keeps the original frame count and adjusts duration. It offers validation and practical notes for common workflows, such as 23.976 to 24 or 29.97 to 30. Use cases include conforming archival footage to a 24fps master, matching multiple camera sources for a single edit, or pre-publishing checks for broadcast specs. The output includes target_frame_count, new_duration_sec, and guidance on potential audio drift or lip-sync issues that may require retiming or re-encoding. Advanced users can input either duration or frames and inspect how the two modes diverge. This is a planning tool; it does not modify media or audio itself but informs decisions about encoding strategy and delivery timelines. The tool supports numeric inputs, clear validation, and ready-to-export results for downstream pipelines. It helps teams avoid last-minute re-edits by providing early estimates and consistency checks. It is valuable for post houses, freelancers, and production studios delivering to streaming platforms or broadcasters. The approach remains codec-agnostic, focusing on timing math rather than codec features.