NLE
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'''N'''on-'''L'''inear (Video) '''E'''diting system: in contrast to the older ''Linear'' video editing system, which operated by writing video segments to tape, starting at the beginning of the program and working to the end. If a program was to be lengthened or shortened, everything from the cut point until the end would have to be re-edited - or else "dubbed", losing a [[Wikipedia:Generation_loss|generation]] of quality. Needless to say, this was very restrictive. | '''N'''on-'''L'''inear (Video) '''E'''diting system: in contrast to the older ''Linear'' video editing system, which operated by writing video segments to tape, starting at the beginning of the program and working to the end. If a program was to be lengthened or shortened, everything from the cut point until the end would have to be re-edited - or else "dubbed", losing a [[Wikipedia:Generation_loss|generation]] of quality. Needless to say, this was very restrictive. | ||
| − | All modern digital video editing systems are non-linear{{Citation_needed}}, allowing the (human) editor to insert | + | All modern digital video editing systems are non-linear{{Citation_needed}}, allowing the (human) editor to insert, delete, trim and move segments at will. Avisynth is a type of NLE [[Original_AviSynth_announcement|(the world's smallest by a factor of 500)]], as changing clips around, lengthening or trimming them, is very simple and straightforward. |
===== Example ===== | ===== Example ===== | ||
Revision as of 03:48, 21 September 2014
Non-Linear (Video) Editing system: in contrast to the older Linear video editing system, which operated by writing video segments to tape, starting at the beginning of the program and working to the end. If a program was to be lengthened or shortened, everything from the cut point until the end would have to be re-edited - or else "dubbed", losing a generation of quality. Needless to say, this was very restrictive.
All modern digital video editing systems are non-linear[citation needed], allowing the (human) editor to insert, delete, trim and move segments at will. Avisynth is a type of NLE (the world's smallest by a factor of 500), as changing clips around, lengthening or trimming them, is very simple and straightforward.
Example
Suppose we start with the following clips, and we want to assemble a program:
clip_intro = AviSource("intro.avi")
clip_main = AviSource("main.avi")
clip_outro = AviSource("outro.avi")
B = BlankClip(clip_main)
Here is our first edit:
edit_1 = clip_intro \ ++ B.Trim(0, -15) \ ++ clip_main \ ++ clip_outro return edit_1
We find it runs a little too long, but it's easy trim it down a bit here and there:
edit_2 = clip_intro.Trim(0, clip_intro.FrameCount-5) \ ++ B.Trim(0, -15) \ ++ clip_main.Trim(0, 12345) \ ++ clip_main.Trim(12390, 0) \ .FadeOut(15) \ ++ clip_outro.FadeIn(15) return edit_2
More Information
[http://en.wikipedia.org/wiki/Non-linear_editing_system Wikipedia: Non-linear editing system
