Re: [LAU] state of multimedia

On Tue, May 05, 2009 at 07:37:55AM -0400, drew Roberts wrote:
> On Tuesday 05 May 2009 03:06:54 Patrick Shirkey wrote:
> > What I am sorely missing is a video time stretch function as the final
> > edit is still badly out of sync. At least now it starts in sync but the
> > drift sets in after about 5 seconds.
>
> I think I read something once about using ardour to do this job. Also, did you
> try blender for the whole job?
>
> all the best,
>

I have used Ardour for this purpose. I used to use mencoder but it does not like Debian, so instead I am using ffmpeg. I find ffmpeg a lot simpler and more intuitive, and more flexible.

My steps are generally:
- Record video
- Record audio simultaneously (using jack_capture, Ardour, whatever)
- Separate out the video's audio track (ffmpeg -vn works)
- Pull the video camera's audio track and my JACK-recorded audio track into Ardour
- Sync them up so they match
- Place the start/end markers exactly where the video's start/end points are
- Mute the video's audio track
- Export to WAV
- Merge it with the video track (ffmpeg -map works well) and transcode it

Some examples (from when I used to use Avidemux):
http://vimeo.com/4226642
http://vimeo.com/4227731

-ken
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Received on Wed May 6 04:15:01 2009