[AVI, mencoder, merge files]

MrGreg · 01-02-2003, 04:59 AM

Greetings,

I recently got a nice little (inexpensive;-) digital camera that I can access as a USB mass-storage device directly in Linux. It is a Fuji FinePix A101 (probed as 1400Z). I had no problem setting it up.

My question is about the MOVIE feature of this camera. I can create short AVI formatted clips with it. I'm searching for more information about adding a soundtrack to the clips.

I believe I already have the tools necessary to do this, but can't find any practical examples. Mencoder seems to be the likely candidate, but I get lost in it's massive man pages.

Has anyone had sucess in merging a soundfile (or live raw audio) to an existing AVI file? What format should the soundfile be in? Can anyone provide a link to a specific HOW-TO on this subject that I haven't been able to find yet?

There has to be a one-liner for this...

thanks,

MasterC · 01-02-2003, 05:14 AM

It would appear so. Browsing over the docs, I found this:
http://www.mplayerhq.hu/DOCS/encoding.html

On that page it talks about using --audiofile to mux together an audio file and a video. So maybe something like:
mencoder --audiofile filename.mp3 /home/video/shortclip.avi -o output.avi
might work?

HTH

Cool

MasterC · 01-02-2003, 05:19 AM

Also, it looks like a straight up file merge might work:
file.mp3 file.avi > file.avi

http://www.mplayerhq.hu/DOCS/faq.html#encoding

It's the 3rd question down.

I'm still searchin for ya, and will let you know if I find anything truly solid.

Cool

acid_kewpie · 01-02-2003, 05:43 AM

no, catting them together will certainly not work. you will have a file which is first half avi, second half mp3, the result of which would be completely useless.

MasterC · 01-02-2003, 05:45 AM

http://www.mplayerhq.hu/pipermail/mp...er/025225.html
Follow the "next" links for the replies.

This talks about merging 2 avi files, but should work with audio as well. I am assuming you mean different audio, not even needing to be really synced. Something like you take a video of someone racing, and put some cool music to it.

Anyway, here's some more info from the mail lists:
http://www.mplayerhq.hu/pipermail/mp...er/005885.html
again, follow the next links for the replies

...........................................................
This one seems to really show you how:
http://www.mplayerhq.hu/pipermail/mp...ly/018339.html

Ok, so The snippet that seems to help:

Quote:

Step 3: Use mencoder to remux your new mp3 file with the movie:

mencoder -audiofile out.mp3 -oac copy ...

You can either copy video as-is (with -ovc copy) or re-encode it at
the same time you merge in the audio like this.

So you can just stream you current video, maybe a command like:
mencoder --audiofile audio.mp3 -oac copy -ovc copy -o filename.avi

Actually that should be it.

HTH

Cool

MasterC · 01-02-2003, 05:46 AM

Quote:

Originally posted by acid_kewpie
no, catting them together will certainly not work. you will have a file which is first half avi, second half mp3, the result of which would be completely useless.

Yes sir, you are absolutely right. I should have realized that, thanks.

Cool