Adding Video and Audio Assets

If you created your track by dragging either a video asset or a video/audio asset pair to the Menu Editor, the Outline tab, or the Graphical tab, it already contains video and audio clips. If you created your track using the Add Track icon in the toolbar, it will be empty.

In either case, you can add additional assets to the streams and even trim each clip’s start and end points.

To add an asset to a stream
  • Drag the video or audio asset from the Assets tab, the Palette, or a Finder window to the stream where you want to place it.

With the V1 stream, DVD Studio Pro automatically ensures there is always a clip at its beginning (if one has been assigned), and there are no gaps between the clips. With the other video streams, the clips can only be positioned at markers. Audio and subtitle clips can be positioned anywhere on the stream and there can be gaps between them.

Adding Audio Assets Automatically

When you enable the “Find matching audio when dragging” setting in the Track pane in DVD Studio Pro Preferences, audio assets are automatically added to a track when video is added.

When you add a video asset to the V1 stream, DVD Studio Pro checks to see if there is an audio asset with the same base name in the same folder. If there is, it is automatically added to the A1 audio stream.

The start of the audio clip will be the same as the video clip. If any audio already exists in the A1 stream where the new audio clip needs to go, it is trimmed or moved as necessary.

Note: Hold down the Command key after you start dragging to temporarily override the “Find matching audio when dragging” preferences setting.

Adding AC-3 Audio Assets

AC-3 audio assets are the only DVD Studio Pro–supported audio asset type that actually have embedded timecode. This can help when you want to maintain sync between the video and audio.

To add an AC-3 asset using its timecode
  • Hold down the Option key, then drag the AC-3 audio file from the Assets tab to an audio stream in the Track Editor.

Note: Because the file must be parsed to determine its embedded timecode, an AC-3 file’s timecode is only available when you drag it from the Assets tab, and not from the Palette or a Finder window. Drag the AC-3 file to the Assets tab first and then from there to the Track Editor.

When you add an AC-3 asset to an audio stream while holding down the Option key, DVD Studio Pro checks to see if its timecode is coincident with the V1 stream’s timecode. In other words, it checks to see if the AC-3 asset has timecode that falls within the timecode range of the video asset.

  • If it is coincident: The AC-3 asset is placed in the stream so that it is in sync with the video.
  • If it is not coincident: The AC-3 stream is placed at the beginning of the stream.

Note: If the V1 stream has more than one video clip, the AC-3 timecode is ignored. It is also ignored if the audio stream you drag it to already has an audio clip.

Using Multiple Copies of a Clip

You can use a clip multiple times in the same stream or you can drag the clip to other streams.

To copy a clip within a stream
  • Option-click the clip and drag it to an empty location in the stream.

You can treat the clip’s copy the same as any other clip in the stream.

To copy a clip to a different stream
Do one of the following:
  • Option-drag the clip to the stream that you want to copy it to. You can position it as needed.

  • Shift-Option-drag the clip to the stream that you want to copy it to. The clip is constrained to use the same start time as the original.

The original clip is not affected, and remains in its location.

Copies of the original clip take up as much disc space as the original clip. If the size of your project is an issue, you may want to simply reuse the original clip by setting markers and creating scripts to access the clip from another project element.

Viewing a Clip’s Properties

When you select a clip in one of the Track Editor’s video or audio streams, the Clip Inspector appears.

To accommodate the additional settings used to configure transitions, the Clip Inspector used for still clips contains two tabs: General and Transition. The General tab contains the same information and settings as with video clips. See Using Still Clip Transitions for information on the Transition tab.

Note: Selecting a clip in a subtitle stream opens the Subtitle Inspector. See Creating Subtitles for information on subtitles.

Figure. Video Clip Inspector.

The Clip Inspector shows information about both the clip and the stream.

Settings at the top of the Inspector
  • Name: Enter a name for the clip. This name applies to the clip in this track’s timeline only—it does not affect the asset’s name in the Assets tab.
  • Asset: Shows the clip’s actual filename.
  • Est. Size: Shows how much disc space this clip requires.
Clip Information and Settings
  • Start: Shows the clip’s start time in the stream.
  • Clip Start Trim: Choose the part of the asset that the clip should use. Enter an amount of time by which to trim the clip’s beginning. This affects the clip’s overall length. When you enter a new Clip Start Time, the clip repositions itself on the timeline so that it begins at the same time, with the clip’s end moving to its new position.
  • Duration: Shows the clip’s length. You can enter a new length to trim the end of the clip.

    Note: When you import a QuickTime asset that contains both video and audio, you may find that their durations, as shown in the Clip Inspector, do not match exactly. This is often due to the DVD-Video specification’s frame rate for the supported audio formats not dividing evenly into the video frame rate. This does not affect the lip sync between the audio and video streams or their playback and is purely cosmetic.

  • Asset Start Timestamp: Displays the timecode of the asset’s first frame.
  • Bits/Second (Avg.): Shows the clip’s bit rate information.
Stream Information
  • Stream Number: Shows the stream’s number.
  • Stream Duration: Shows the stream’s length.
Browse Clip

For video clips only. You can drag the slider under the thumbnail image to scrub through the clip’s video.

Removing a Clip from a Stream

There are several ways you can remove clips from a stream.

To remove a clip from a stream
Do one of the following:
  • Click the clip to select it, then press the Delete key.

  • Control-click the clip, then choose Delete Media Clip from the shortcut menu.

These methods remove the clip from the stream, but the asset remains in the Assets tab. The actual asset’s file is not affected.