Adobe CAPTIVATE 5 Help Manual page 106

Last updated 4/22/2010
Using audio
You cannot associate additional audio to a slide video. Therefore, Adobe recommends that you use audio in file and
not audio as object as synchronization might not be proper.
Setting timing
❖
In the Timing area of the Property Inspector (Window > Properties), specify the seconds after which the slide video
must appear on the specific slide.
Setting transition
❖
In the Transition area of the Property Inspector (Window > Properties), specify the transition effects (fade in/fade
out) for the slide video.
Setting the size and position of slide videos
In the Position & Size area of the Property Inspector (Window > Properties), specify the values for size and position.
1
Note: Applying arbitrary sizes to video objects degrade the quality of the video on published project.
2 Click to apply the values to all slides of a group that share the slide video.
Note: Apply to all applies the size and position values only to the video that belongs to a slide group and not to other
videos in the project or the same video belonging to different slide groups.
Best practices to use slide videos effectively
• Use slide videos when you want the video to play in synchronisation with the slide contents. For other purposes,
use the FLV or F4V object, where user gets to control the video (for example, play or pause the video).
• Ensure that the videos have sufficient key frames. The recommended keyframe interval is at least one key fame in
2 secs.
You can use Adobe Media Encoder (AME) to increase the keyframe interval if required. For a 30 fps video,
configure the keyframe-distance to be 60 (frames) in AME (or any other tool of your preference).
•
Ensure that the videos have optimal bit-rates so that viewers' experience is good. Else, many 'loading...' messages
are displayed to the users.
Decide the bit-rates based on the server's as well as your target users' bandwidth. For information on calculating
bit-rates, see the article at
•
Import video from your local machine rather than from a shared network location. Large videos imported directly
from network locations cause excessive delays and occasional system instability.
•
Ensure that the minimum duration for a portion of video on a slide (per slide video) is 3 seconds. This duration is
necessary to ensure that at least a couple of key frames are assigned per slide.
• Ensure that the maximum duration of a slide video is 999 seconds (maximum slide duration). If the video is longer
than this duration, distribute it among multiple slides. Videos longer than 999 seconds can cause system instability.
• Video dimensions:
• Ensure that the video object dimension is the same as that of the original video for optimal quality.
• Do not change the aspect ratio of the video even if you cannot maintain equal dimensions for the video object
and original video. Otherwise, the video loses quality.
DRAFT
www.adobe.com/devnet/flash/apps/flv_bitrate_calculator
USING ADOBE CAPTIVATE 5
Noninteractive Objects and Media
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