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Author Topic: Replacing audio on a produced video  (Read 2335 times)

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runonce

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Replacing audio on a produced video
« on: October 27, 2011, 10:06:05 AM »
We recently had a multicam video shoot done for a country show I work for...

We just got the master DVDs...The video looks good enough - but their audio is worse than awful!
The poor fellow tired to run off our splitter snake, and record something like 8 submixes for later remix. What a disaster - besides sounding terrible, he somehow managed to not record the lead vocalist track!

Fortunately - my on the fly matrix, sounds very nice.

So we want to replace the audio that came on the DVDs, with my recording.

I recorded at 16/44, So I assume I first need to upsample to 48?

I really dont have any experience with video editing and even worse my home machine is Linux - which lacks a killer app for video. Im going to give OpenShot a try...

http://www.openshotvideo.com/

If I give up in Linux - I can use the new Win7 PC at the office, but might appreciate some ideas for apps?...I know Vegas is preferred by many. Does it still have a usable trial?

Thanks for any ideas...!

Offline ScoobieKW

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Re: Replacing audio on a produced video
« Reply #1 on: October 27, 2011, 10:20:48 AM »
Vegas does have a decent trial, and up to 10 video layers for under $100.

The main thing is that due to small differences in timing crystals, the clock on your recorder is not going to sync exactly to the video. You will need to stretch the audio to fit the video. In bad cases of clock drift, people will break the project into song groups and fix it in parts.

This was covered in more detail recently, I'd do a few more searches on the forum for more.

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Offline guitard

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Re: Replacing audio on a produced video
« Reply #2 on: October 30, 2011, 09:01:13 AM »
Assuming the audio in the DVD is in perfect sync...

1.  demux the audio from the DVD
2.  drop the DVD audio and alternate audio sources into your favorite audio editor
3.  tweak the alternate audio so that it matches the DVD audio in terms of timing and length
4.  save the alternate audio
5.  reauthor the DVD with the alternate audio
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