浏览源媒体Exploring the Source Media

1. 在 Media 页 左上角的 media storage browser 中，定位到 R20 Beginners Guide/Media/OMO。Using the media storage browser at the top left of the media page, navigate to R20 Beginners Guide/Media/OMO.

该路径下显示源媒体文件夹，其中包含按用途分子文件夹来存放各类源片段。This displays the source media folder, which contains additional folders that have been created to store the source clips.

1. 在 Media 页 左上角的 media storage browser 中，双击 B-ROLL 文件夹查看其内容。In the media storage browser at the top left of the media page, double-click the B-ROLL folder to view its contents.

该文件夹存放 Organ Mountain Outfitters 项目的 B-roll 素材，你在前面课程中应该已经见过。This folder contains the B-roll clips for the Organ Mountain Outfitters project that you’ll no doubt recognize from earlier lessons.

你可以选中任意片段进行预览，操作方式与之前在 Edit page 上一致，使用的也是同一套键盘快捷键（详见第 1 课）。You can select any of these clips and preview them, similar to how you’ve worked previously in the edit page, using the same keyboard shortcuts for playing clips in the media page’s source viewer that you’ve used previously on the edit page (see Lesson 1 for more details).

1. 将鼠标指针悬停在该文件夹中任一片段上，即可在 Media 页 的 viewer 中实时预览。Move your mouse pointer across any of the clips in this folder to live preview the clip in the media page’s viewer.

1. 在 media storage browser 中，点击任意片段的"i"按钮查看更详细的信息。In the Media Storage browser, click the “i” button of any clip to reveal more information about that clip.

和 Media Pool 中一样，点击"i"按钮后会显示该文件的时长、分辨率、帧率以及视频编解码器等信息。As in the media pool, clicking the “i” button reveals information about the file, such as its duration, resolution, frame rate, and video codec.

1. 点击 media storage browser 顶部的 List View按钮切换为列表视图。Click the List View button at the top of the media storage browser.

1. 滚动列表，直到能看到 Resolution 和 FPS 两列。Scroll until you can see the Resolution and FPS columns.

List View 便于对比多个素材的属性。这里可以看到，所有素材分辨率相同（1920 x 1080），但帧速率各不相同（23.976、24、30、48 和 60 fps）。Using List View allows you to compare the properties of multiple clips. Here, you can see that the clips are all the same resolution (1920 x 1080) but have various frame rates (23.976, 24, 30, 48, and 60 fps).

1. 点击 Thumbnail View按钮，回到熟悉的素材缩略图视图。Click the Thumbnail View button to return to viewing the familiar clip thumbnails.

1. 在 media storage location 的目录树中，进入 Organ Mountain Outfitters 文件夹，选中 INTERVIEW 文件夹。In the media storage location’s directory tree, select the INTERVIEW folder in the Organ Mountain Outfitters folder.

该文件夹下还有两个子文件夹：AUDIO 和 VIDEO。This folder contains two additional folders: AUDIO and VIDEO.

1. 双击打开 VIDEO 文件夹查看素材。Double-click to open the VIDEO folder and view the clips.

此文件夹包含 Organ Mountain Outfitters 创始人 Chris Lang 的全部采访素材。This folder contains all the interview clips with Organ Mountain Outfitters’ founder, Chris Lang.

1. 点击 List View按钮，对比素材的分辨率和帧速率。Click the List View button and compare the clips’ resolutions and frame rates.

同样，这些采访素材统一为 1920 x 1080 分辨率，帧速率为 23.976 fps。Again, these interview clips have all been shot at a resolution of 1920 x 1080 and at a consistent 23.976 frames per second.

总结：本项目素材为 1080 HD 分辨率，帧速率从 23.976 到 60 fps 不等。从画面饱和度偏低也可以看出，素材是在特定 color space 下拍摄的。To summarize: the media you’ve been supplied with for this project has a 1080 HD resolution, with a variety of frame rates ranging from 23.976 to 60 frames per second. You will also note from the rather low saturation of the images that the footage has been shot in a specific color space.