Video Editor is a computer program, which includes a set of instruments that allow existing non-linear video and audio files editing on your computer. Also, most of video editors allow you to create and overlay titles, to carry out color and tone correction of the image, mix the sound and create special effects. Professional programs using allows you to synchronize the sound with the picture on the time code.

Video editor usually involves the creation of a sheet of mounting solutions for the video. In this case, it is a combination of all the settings and changes made in the application, which are recorded in a separate project file. All media files save the edit decision list, data on the sequence in which they play in the final video, the start and end point of a scene, also all changes of source video files and sound. Ready leaf mounting solutions can be opened for further editing; all previously used media should be available on the links on the path that has been saved in the project. Otherwise, the application will inform about the inability to find a particular file. Some programs make possible directly save all the source files, however, copy all the files may require more disk space.

Capture

Many editors allow you to capture video, that is, save video stream to a file, besides being able to download the complete video files. As rule, the soundtrack is recorded together with the video.

In purposes to save disk space, the video stream is compressed, that is encoded by using compression algorithms. Option code`s select depends on the possibilities of the computer or editing station, a reasonable file size and video quality ratio, also the future intentions to use this file.

Installation

All video editors have simply installation`s possibilities, such as the ability to cut and glue together the fragments of video and sound. But more advanced applications have much more possibilities, allowing to change the characteristics of the video, create a variety of transitions between clips, zoom and video format, add or remove noise, make color correction, add titles and graphics, manage the sound track, finally, create a stereoscopic video ( 3D).

The final rendering

It is a necessary to do the final rendering and compress video and audio, depending on the purpose of subsequent use of the resulting video program after installation,

The final rendering allows you to create a new video with effects and transitions applied in the project. For complex projects, this operation requires significant system resources and may take time. The preliminary miscalculation or pre-rendering Superimposed effects in real time can be used , also during installation to view. In this case, a calculated piece of video is recorded in a temporary file or in memory.

Compression

Compression of video codec and format is determined by the objectives of the subsequent use of this video. Products are required with minimal distortion for high-quality broadcast video, that is, with a low compression ratio and, therefore, with great flow - for video standard definition of 25 Mbit / s and above. Effective codes are applied for the Internet and for recording on mobile devices that allow obtaining acceptable quality images with low data flow - 1-2 Mbit / s for standard definition video. High-definition movie requires a lot of bit rates and, consequently, increased requirements for computer or editing station system resources.

Authoring

DVD-authoring is the process of creating a DVD-Video. This operation involves the creation of menus, the division of films into sections, add multiple audio tracks for different languages, add subtitles. More advanced editors also have the opportunity to authoring Blu-ray.