AviSplit Split, rejoint and clip avi/divx files. Whether splitting, rejoining or clipping, AviSplit is very fast as no data processing is involved (lossless). Generally, using Avisplit is about as fast as copying the file itself! Moreover the split result is playable and can be rejoint back to the original. Missing part is also not a problem, since the rest will still be joining while skipping the missing part.