# AlignedSplice / UnalignedSplice

`AlignedSplice` (clip1, clip2 [, …])
`UnAlignedSplice` (clip1, clip2 [, …])

`AlignedSplice` and `UnalignedSplice` join two or more video clips end to end. The difference between the filters lies in the way they treat the sound track. `UnalignedSplice` simply concatenates the sound tracks without regard to synchronization with the video. `AlignedSplice` cuts off the first sound track or inserts silence as necessary to ensure that the second sound track remains synchronized with the video.

You should use `UnalignedSplice` when the soundtracks being joined were originally contiguous - for example, when you’re joining files captured with AVI_IO. Slight timing errors may lead to glitches in the sound if you use `AlignedSplice` in these situations.

Avisynth’s scripting language provides `+` and `++` operators as synonyms for `UnalignedSplice` and `AlignedSplice` respectively.

Also see here for the resulting clip properties.

    # Join segmented capture files to produce a single clip
    UnalignedSplice(AVISource("cap1.avi"),AVISource("cap2.avi"),AVISource("cap3.avi"))

    # or:
    AVISource("cap1.avi") + AVISource("cap2.avi") + AVISource("cap3.avi")

    # Extract three scenes from a clip and join them together in a new order
    AVISource("video.avi")
    edited_video = Trim(2000,2500) ++ Trim(3000,3500) ++ Trim(1000,1500)

$Date: 2004/03/09 21:28:07 $