Hard Light Productions Forums
Off-Topic Discussion => General Discussion => Topic started by: Marcov on March 31, 2011, 02:10:58 am
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Sorry for the vulgar language, but this is just how I feel now about Ulead's horrible audio.
As you might know, I'm working on a "FreeSpace dub" Battle of Endor scene (http://www.hard-light.net/forums/index.php?topic=75339.0). Apparently Windows Movie Maker sucks as well, it can't even create a movie out of a 2-minute video.
So I'm using Ulead VideoStudio 10. When I extract the audio from the crossover vid (I'm extracting it to make MORE audios, such as details, extra sound effects, etc. if you get my drift), it gets HORRIBLE. Simply terrible, it goes all roughy and that. :mad: :banghead:
Help, please?? I can't just redo it like that.
A huge thanks to anyone who can solve the problem!!! :yes: :yes:
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Has HLP gone to sleep or something??
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It's possible that just nobody who's read the thread has the program and can help. Or maybe they're just waiting to respond until they have more time, or it's possible that nobody feels like putting any effort into helping you fix it.
All I can offer is to say that if you're only working with audio, you should use a program that does only audio, like audacity (it's free). If you're trying to rip audio from a video clip, I'm sure there are some good free programs you could find that do that. Basically, if the thing you're using sucks, get a new thing.
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Sounds like the program is doing one of the following:
-bad decoding
-bad mixing
-bad encoding
Decoding and encoding are unlikely culprits as long as the implementation is compliant to the sound compression formats.
What I suspect is happening is that as you mix additional audio signal on top of the original, you introduce clipping on the signal*.
The program probably does a simple interferometric wave format mixing of the several audio sources and doesn't rescale the resultant waveform to avoid clipping. What you should do is export the sound from the video project, remix it in a program that gives you full control over it (Audacity would be perfectly sufficient), export the audio from audacity, then use that mixed audio file as your audio track source for the video.
If the video editing program is worth anything at all it'll have a feature that allows you to specify sound file source. If it doesn't allow that, switch to VirtualDub.
*Short introduction to clipping: It is a result of digital information storage and can happen in image or audio data (among others). Basically if two sample values combined result in a value that is larger than the bit depth of the individual sample, causing the sample to peak at full 0 dB, which wouldn't be a problem if it were just that sample, but there'll be a number of adjacent samples peaked to full 0 dB intensity, and that'll cause noticeably bad sound quality (infamous example of this are the LoudTube videos which are intentionally amplified to introduce severe clipping on audio). On images, white-outs in photos (due to overexposure) are essentially the same thing - causing irreversable loss of information...
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Thanks for the suggestion, Tohori.
However, even once I'm done combining the audio from Audacity with the video from ULead, it won't stop ruining the audio...making it rough and all that.
:confused:
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We're gonna need a better description to make a prescription, doc. "Rough sound" doesn't especially help to tell what exactly is happening...
Maybe post a short sample video or audio clip to demonstrate the issue, along with original audio?
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Never mind. Now using Sony Vegas Pro.
Thanks anyway :).