mifi / lossless-cut

The swiss army knife of lossless video/audio editing
GNU General Public License v2.0
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true keyframe cut #1984

Open ac615223s5 opened 1 month ago

ac615223s5 commented 1 month ago

aligns the segments to make keyframe cut more consistent

the segment start will be moved to less than one frame before the first keyframe strictly after the start point, ensuring that the cut will be at the last keyframe at or before the start point.

the endpoint can optionally be aligned to a fraction of a frame before the first keyframe at or after the endpoint. this is useful for splitting a video into segments without repeating or missing any frames.

ac615223s5 commented 1 month ago

closes #1973 closes #330

coderabbitai[bot] commented 1 month ago

Walkthrough

The latest update introduces a new option, "True keyframe cut," for aligning segment times in the video editing dialog. This mode replaces the former default setting "before" with "consistent." Supporting changes were made across different modules, including updating function parameters, handling logic, and error management to integrate this new mode seamlessly.

Changes

File Path Change Summary
src/renderer/src/dialogs/index.tsx Added the "True keyframe cut" option in the segment alignment dialog and changed the default option.
src/renderer/src/ffmpeg.ts Introduced a new type consistent in the FindKeyframeMode enum and added case handling for consistent.
src/renderer/src/hooks/useSegments.ts Imported getStreamFps and getDuration functions; modified keyframe alignment logic and segment time adjustments.

Sequence Diagram(s)

sequenceDiagram
    participant UI as User Interface
    participant Dialog as Align Segments Dialog
    participant Hook as useSegments Hook
    participant FFMPEG as FFMPEG Module

    UI->>Dialog: Choose 'True keyframe cut'
    Dialog->>Hook: Trigger segment alignment
    Hook->>FFMPEG: getStreamFps(videoStream)
    FFMPEG->>Hook: Return fps
    Hook->>FFMPEG: getDuration(filePath)
    FFMPEG->>Hook: Return duration
    Hook->>FFMPEG: findKeyframe(mode: 'consistent')
    FFMPEG->>Hook: Return keyframe time
    Hook->>Dialog: Update segment times
    Dialog->>UI: Display updated segments

Poem

In the land of frames, algorithms dance, "True keyframe cut" now takes its stance. Alignments precise, consistency reigns, Scenes flow smoothly, avoiding pains. 🎬 Where segments once stumbled, clear paths unfold, A tale of code, precise and bold. 🌟


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