Adjust Volume

jspring111 · Post by **jspring111** » Mon Aug 27, 2007 12:11 am

Another Question: Is it possible to adjust the volume of different parts of a video scene or only the entire scene (other than fading out beginning and end)? DVD Movie Factory 6

sjj1805 · Post by **sjj1805** » Mon Aug 27, 2007 2:37 am

I would say a clumsy yes.
I normally edit with either VideoStudio or MediaStudio but I have taken a look at the options available in MovieFactory.

If I only had MovieFactory to work with I would have two choices.
The first option using Only MovieFactory - is the clumsy option.
A better option which would give pleasing results will involve the use of the FREE Audio Editor Audacity
and a FREE Audio Extractor

Firstly - common to BOTH options.
Import your Video into MovieFactory.
Select [Edit Room]
Switch to [Timeline View]

Method 1 (Clumsy)
Move the cursor to where you want a fade out/in and cut with the scissors.
Then apply fade out and/or fade in.

Method 2 (better)
Firstly extract the audio with Audio Extractor
then edit it with Audacity
This creates an audio file on your hard drive.

This time in the [Edit room] you
1. mute the existing video soundtrack

2. Add your replacement audio track to the 'music track'

jspring111 · Post by **jspring111** » Thu Sep 06, 2007 1:47 am

Update:

I did as suggested and extracted the audio track, then edited it with audacity. I attached the resulting edited audio track but it is out of synch. I spoke to my nephew who is an expert in this field and he said the problem is with the way mpeg compression works. mpeg only has a complete video frame every 12 or so frames and the frames between only store the changes from the previous frame. Therefore when you import the new sound track it has to attach to one of the complete frames, or to the next one 12 frames later. Apparently it's a problem with mpeg.

etech6355 · Post by **etech6355** » Thu Sep 06, 2007 2:24 am

Apparently it's a problem with mpeg.

Yes & No. What you need to do when extracting the audio track is convert it to a wav file (uncompressed audio). You don't want to edit a compressed music file that's linked to a video.
The important thing is the time in secs. Whatever you do in an audio editior you must keep the length of the audio the same as the length of the video.

DVDDoug · Post by **DVDDoug** » Sat Sep 08, 2007 1:14 am

I've had plenty of problems with A/V sync... Take a look at my tagline below!

But, these usually came from editing the MPEG video.

I've done this several times (with MPEGs) and I've never had a problem caused by extracting the soundtrack, editing it with and audio editor, and then re-combining the audio & video.