Skip to content

MP4Splice v1.0.0

Choose a tag to compare

View all tags
@chasecheney chasecheney released this 15 Jun 04:55
v1.0.0
cb96386

MP4Splice v1.0.0

A native macOS app to join and split video files, built in Swift + SwiftUI on
AVFoundation. Universal binary (Apple Silicon + Intel), no bundled binaries, no Carbon.
A clean-room successor to the old wxWidgets/ffmpeg MP4Tools.

Highlights

Join

  • Drag-and-drop files in, or use Choose Files.
  • Automatic Finder-style natural sorting (numeric-aware), with manual reorder and a sort menu.
  • Per-file info (resolution, frame rate, video/audio codec, audio bitrate).
  • Mismatch warnings that flag files differing from the majority and say what differs.
  • Smart output filename suggested from the shared name of the inputs.

Split

  • Built-in video preview player (AVKit).
  • Three modes: equal parts, custom split points, and extract a single range by start/end timecode.
  • "Use playhead" buttons to capture in/out points from the preview.

Re-encoding (optional, hardware-accelerated via VideoToolbox)

  • Codec: H.264 or HEVC.
  • Resolution: 480p, 720p, 1080p, 2K, 4K, 8K (aspect-preserving).
  • Frame rate: NTSC (29.97), PAL (25), 24, 30, 60, 120, 240.
  • Letterbox or fill when aspect ratios differ.
  • Live bitrate recommendations pane (from the VideoToolbox guide) by content type, with
    HEVC suggested at ~2/3 of H.264; click a value to apply it.

Job queue

  • Add multiple join/split jobs and keep working while they run.
  • Sequential background processing with live progress, an active-job indicator on every pane,
    cancel-and-delete, reveal-in-Finder for completed jobs, and collision-free output names.

Requirements

  • macOS 13.0 or later
  • Apple Silicon or Intel Mac

Install

Download MP4Splice.zip, unzip, and move MP4Splice.app to Applications. This build is not
notarized, so on first launch right-click the app → Open to bypass Gatekeeper.

Assets 3
Loading