Sound in Blender

I planned to create a short animation with sound (skull that says something) and render it to avi.

Now I have read in my Blender 2.0 guide that sound can’t be added to animations so far and can only be watched as a curve.

Does this really mean, that even with Blender 2.32 I can’t add sound to my animations?



well… yes and no.

you can load up your sound clips into sequencer.
then, you animate your animation… and render it like normally.
then, in sound buttons, hit “mixdown” and it will produce a WAV file that fits to your animation lenght. it will be saved into the same directory as your animation rendering…

after that, just use a program to multiplex these files together.

so, blender can’t produce AVI with sound. but it will produce AVI and sound for you… just combine them together after that with another program.


I think you’re asking if you can lipsync with live sound in Blender in 2.32. The answer to that question is Yes. Put your sounds in the sequencer, go to the Audio buttons and turn on both Sync and Scrubbing. Now, when you go back and forth in the Actions windows or the Audio timeline by dragging your mouse (known as “scrubbing”) you’ll the hear the audio.

You can do your lip sync work live within Blender now.

Where exactly does one enable scrubbing and sync? I can remember those functions, but I can’t find them anymore… :slight_smile:

scrubbing is that you can browse frames with cursors or mouse, and it will play the sound at the same time… forwards, backwards, where ever you are going…

sync is that when you hit alt-a, the animation and sound will be in sync. it may skip frames, but it is in sync.


Those options are in the Scene buttons (F10) in the Anim/Sound tab (the little wavy arrow).


Thanks for the help for now!

Now that Blender can’t add the sound to my video: Does someone know a good + free program which can combine the Wave-File and the AVI? :o

Btw: I have loaded some sounds for visualization into the Audio Timeline and I would like to delete them now, but don’t know how …? :frowning:

Virtualdub, baby!


baby :wink:

If you have Linux, you could try Cinelerra (, link seems to be down, but it should work). But for simple editing, virtualdub will do fine. But for advanced users, Cinellera is the thing to use. I’ve never tried it myself, because my system doesn’t meet the dual 2.0 Athlon MP and 1024 MB memory requirements…

Cinelerra doesn’t require dual Athlon MPs… it helps, but it isn’t required. It works perfectly well (in it’s own quirky way) on both my Athlon Thunderbird 1.3 GHz machines and my Athlon XP 2000+.

Another option, assuming you can get the video and audio into the proper formats is to multiplex the files with a comandline tool like mplex.

Cinelerra is so funny, it should rather be called “Jokelerra”…

That opens up perspectives. I’ll try it on my XP1800+, as soon as my new Linux-gentoo system is up and running.

And intrr, why is it so funny?

I believe there are two potential reasons why intrr things Cinelerra is funny.

  1. The main developer has an odd, quirky, and extremely cynical sense of humor. Maybe intrr finds this appealing.

However, more likely, it’s:

  1. Cinelerra isn’t quite there yet. I’ve been following it since it’s precursor (Broadcast 2000), and it’s grown up quite a bit. However, the interface needs work (the words “tossed salad” come up a lot when it’s discussed), it has some stability issues, the source isn’t all that “developer friendly”, there’s a large need for additional documentation, and the main developer’s sense of humor tends to confuse new users needing help.

That said, if you’re willing to spend some time with the app and look past its short-comings, it really is quite a capable tool. Nothing else really comes close to it in the OSS world, especially in Linux. You can do “cuts-only” editing in Kino or even Blender, but for anything more involved, you’d be hard pressed to find anything other than Cinelerra. There’s a strong community built up around it, and the issues I’ve listed above are being worked on. It’ll take time, a whole lot of time, but as it stands, Cinelerra does get the job done for me… even if it’s kind of a bear to deal with at times.

Wow… that’s really more than I wanted to type about that. Oh well.


Your typing has not been made in vain. You basically said everything that I was too lazy to type, and for that reason chose that shortcut :slight_smile:

I have a quick question…

Can a sound effect’s pan and vol be controlled via Python?

Linux users can combine video and sound with Kino, and also there’s a free beta version of Main Actor (or is it main vision), but I couldn’t get it to install on my Mandrake 10.0 due to dependancy errors. My libs were to new to work, but if you have an older install (with the older versions of the required libs) it may work