NLE
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| − | + | '''N'''onlinear '''V'''ideo (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 and delete 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 ===== | ||
| + | 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 | ||
[[Category:Glossary]] | [[Category:Glossary]] | ||
| + | [[Category:AviSynth_Usage]] | ||
Revision as of 04:43, 21 September 2014
Nonlinear Video (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 and delete 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
