はじめに
Blender is a versatile software used for modeling, sculpting, 2D drawing, animation, and video editing. Most of the work is done in so-called editors: tools for viewing and modifying your work through a specific part of Blender.
There are a couple of editors that can manage video: the Compositor, the Movie Clip Editor, the Image Editor (only for still images), and the Video Sequencer.
This section describes only the interface of the Video Sequencer, to read more about usage of the Video Sequencer read the Video Editing section.
Editor Layout
The Video Sequencer is composed of multiple regions (see figure 1). They are described in more detail in the next sections. Figure 1 shows the combined Sequencer & Preview view type. This view can be broken up into the following regions:
Figure 1: Sequence Editor shown in the Sequencer & Preview view type.
Header (red), Preview (yellow), Sequencer (blue), Properties (gray), Panels & Tabs (yellow), Toolbar (purple).
- ヘッダー
This region displays menus and buttons for interacting with the editor. The header changes slightly depending on the selected view type (see below).
- Preview(プレビュー)
This region shows the output of the Sequencer at the time of the Playhead.
- Sequencer
This region shows timeline for managing the montage of strips.
- Properties(プロパティ)
This region shows the properties of the active strip. Is divided into panels and tabs. Toggle on or off with N key.
- Toolbar(ツールバー)
This region shows a list of icons, clicking on a icon will changes the active tool. Toggle on or off with T key.
View Types
The Video Sequencer has three view types which can be changed with the View Type menu (see figure 1; top left).
Figure 2: Three view types for the Video Sequence Editor
- Sequencer
タイムラインとストリップのプロパティを表示します。
- Preview(プレビュー)
プレビューウィンドウとプレビュープロパティを表示します。
- Sequencer & Preview
プレビューとタイムライン両方のビューとプロパティを合わせて表示します。
ちなみに
1つのワークスペースで任意のビュータイプの複数のインスタンスを作成できます。
パフォーマンス
再生パフォーマンスは、いくつかの方法で改善できます。パフォーマンスへの最大の影響は、Video Sequencerが再生をキャッシュできるようにすることです。キャッシュには2つのレベルがあります。最初のレベルはRAMキャッシュです。これはデフォルトで有効になっていますが、使用可能なRAMの量を増やすことができます。次のレベルのキャッシュは、キャッシュされたストリップをディスクに保存するディスクキャッシュです。ディスクキャッシュは通常、RAMキャッシュよりも多くをキャッシュできますが、速度が遅くなる可能性があります。これらのキャッシュオプションは両方とも、 Preferences で構成できます。
Another way to improve performance is by using Strip Proxies. These are used to cache images or movies in a file that is easier to playback by reducing the image quality by either decreasing the resolution and/or compressing the image.