[RNLD] Import .wav into .mp4?

Frank Seidel frank.zidle at GMAIL.COM
Wed Mar 13 16:54:40 UTC 2013

Hey Marc,

you need to align the two in Premiere or Final Cut or any other cutting
program that allows several audio tracks. I cannot give you specifics about
other programs because I do that in Premiere. The principle of it is not
too hard to do though. You will have two audio tracks that you can align,
which make things easier. Align the two audio spikes you created with a
clap. You have to zoom in really close to do that. Then shift the new audio
track forward or backward a little until you hear no echo anymore, if you
play both audio tracks simultaneously. Delink the original audio from the
video track, link the new audio to the video track, delete the old audio
track and you are good to go.

There are plenty video tutorials on You tube. If you cannot find a good one
contact me again and I have the link to one somewhere that I cannot
readily  find at the moment (for Prmiere only though, but the principles
are explained which should enable you to transpose the process to a cheaper
video cutter.)

Best of luck,


Frank Seidel, Ph.D.
University of Florida
Center for African Studies at the University of Florida
427 Grinter Hall - PO Box 115560
Gainesville, FL 32611-5560
Tel: 352.392.2183
Fax: 352.392.2435

On Wed, Mar 13, 2013 at 10:16 AM, Mark W. Post <markwpost at gmail.com> wrote:

> Hi All -
> I've been trying to figure out something which I feel *should* be pretty
> straightforward for quite some time now, but can't seem to find an ideal
> solution. Advance apologies if this is old hat.
> I'd like to import a .wav file into an .mp4 container, ideally without
> using a big expensive program like Final Cut or Premiere. So, according to
> my poor understanding of things, an .mp4 contains an MPEG-4 video stream
> and a PCM audio stream. What I would like to be able to do is disassociate
> the audio stream, import a distinct .wav file, sync up the two streams
> audio-visually (i.e., with a clap), and export a new .mp4 file. And, to
> make it even more interesting, I would like to know how to do this on both
> a Mac and a PC. So, the situation I have in mind is when someone has a good
> HD camcorder with terrible audio, but a good separate audio recorder, and
> needed one resulting file (e.g. to import into ELAN). I realize that ELAN
> also has the ability to sync multiple streams, but I'd like to know how to
> create a stand-alone container file.
> Many thanks in advance for any help!
> Cheers
> Mark
> --
> Dr. Mark W. Post
> Universität Bern
> Institut für Sprachwissenschaft
> Länggassstrasse 49
> 3000 Bern 9
> Switzerland
> Tel +41 31 631 37 07
> Eml markwpost at gmail.com
> Web unibe-ch.academia.edu/**MarkWPost<http://unibe-ch.academia.edu/MarkWPost>
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