As Mike says, until the work

#214012
AvatarJackWolcott
Participant

As Mike says, until the work is rendered the computer keeps track of all your edit information. NLE is non destructive: that is, your video files remain completely intact. The computer merely creates markers to indicate the location of cuts, dissolves, color correction, etc.

When you play back your edit from the timeline — at least in Sony Vegas Pro, which is my NLE as well — the computer calculates from all the information in the markers and displays the bits and pieces of your video on the monitor as a coherent video stream.

When the work is rendered the computer combines all the data points into a coherent stream and exports the results to the file format of your choice, rather than sending the stream to your monitor.

A computer guru can probably explain this more technically, but I believe I’ve hit the salient points in the process.

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