AVI Splitter

Splitter AVI is a file-based tool designed for users who need precise segmentation of AVI video files. It accepts AVI inputs, supports time-based splits (start and duration) and frame-based splits (frames per segment), and outputs standalone AVI files that preserve original codecs and audio-video synchronization. The workflow is designed to avoid unnecessary transcoding when possible, reducing quality loss and processing time. It is ideal for editors, broadcasters, archivists, and content creators who must isolate clips, assemble chapters, or prepare assets for review.
Core logic centers on safe demultiplexing of video and audio streams, calculating split boundaries from user parameters, and re-multiplexing segments into new AVI containers. For time-based splits, the tool computes start_time and segment_duration for each segment; for frame-based splits, it converts frames to time ranges using the input frame rate. It ensures boundaries align to keyframes when feasible and reports any segments that require minimal re-encoding to preserve quality.
Outputs include a list of segment file paths, durations, and metadata. The tool handles edge cases such as overlapping requests, zero-length segments, and inputs with variable frame rates. By design, it avoids altering the source streams beyond segmentation, and it outputs consistent, playback-ready clips suitable for further editing or archival delivery.