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Participant
February 7, 2008
Question

Cap3 – Audio corruption problems

  • February 7, 2008
  • 1 reply
  • 242 views
[Running Captivate 3 on Windows XP Pro]

In the project I’m working on, I’ve captured all the slides I need, and have built up my narration audio by adding .wav clips as I go along. I’ve been using the Edit Audio Timing display to sync the next series of slides to each audio clip I add.

PROBLEM:
The project was running approx. 70 MB (50 individual slide events). After importing my last audio clip, I was in the process of syncing it to the remaining slides in my show. ... But while previewing my timing, I found that at slide cut points going almost to the beginning of my project, short silences were inserted intermittently, and just as often, syllables were dropped or duplicated from my voice-over, again, at slide cut points. In some cases, the inserted silences were impossible to delete. These problems cropped up in segments that were fine previously.

The rework has been extremely painful. … I decided to cut up the project into smaller movies, prove them out, then concatenate the pieces. This seems to be working okay. In the meantime, I also purged my libraries of unused objects.

I’ve noted that in trying to remedy this situation, I’ve deleted a clip from the timeline, and re-imported it. When this happens, I get an alert asking whether I wish to create a duplicate of the clip or not. It’s clear that just because you delete a clip from the timeline, it remains in the library. Is my poor library maintenance a potential cause of this garbling? What’s going on? ... Would greatly appreciate any best practices info.
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1 reply

Captiv8r
Legend
February 10, 2008
Hi Myron

What you are describing sounds as if you had your Captivate movie part recorded, then brought in a narration that was about as long as the project and used the option to choose where the audio was split up.

While I'm not saying it's desired behavior and we shouldn't worry about it happening, it would seem to make sense that Captivate is somehow inadvertently inserting the short silences.

I would think that an easy way to avoid this happening is by taking a different approach to recording audio narration. For starters, try to avoid thinking in terms of the whole project. Think at the slide level. When you record narration, instead of recording a long narration, record just the narration for the individual slide. Then move to the next slide in the recording dialog and record the next. The key factor in this is to avoid allowing Captivate to manipulate your audio.

Just a thought... Rick
Participant
February 15, 2008
Thanks, Rick. You have my process correctly, but I'm trying to push Captivate to a more professional level, recording my audio in a studio environment so it's quality doesn't suffer from the otherwise noisy environment in which I capture and edit my movies. It's also a style thing. I need to script my shows in advance, and develop a pacing based on the narration. Given your suggestion, I guess the best policy is to keep doing what I'm doing, but divide my long narration takes into segments no longer than a few slide events, and import them per slide as you say. I've went ahead and done this, and it seems to be the solution. In fact, what I do now is import the clip into the first slide, then use the Edit Audio Timing feature to spread it over the remaining few slides -- so as not to push the feature too much. ... This doesn't absolve the Edit Audio Timing feature from inserting dead air, or worse, garbling prior audio with repeated syllables. I'll report this as a bug to the development group. ... Thanks, as always, for your kind advice. Myron