export to QT movie: Cannot hear audio

Can't speak for the AVI's but the Quicktime engine can PLAY mpeg 1 audio, but it can't convert it. So what you're seeing is exactly what the QT Pro player would do if you tried to export a .mpg file out as a QT movie-the audio wouldn't come through.

You're going to need to convert that Mpeg 1 movie to something that QT plays nice with, like Mpeg4, etc.

If you use a third party app to convert those files, you'll likely get audio, but ONLY if they do NOT use the QT engine to do their work. Otherwise, you'll probably have to use BBdemux to demux the mpeg file and then use a video editing app (like iMovie) to put the parts back together.

See if Mpeg stream clip can open and resave the file (not sure if it can).

We had the same problem. Tried a million ways to figure it out, never could. Keynote's audio is very quirky. You really cannot rely on it at all, especially if doing long presentations. I do not know why Apple released it like this. Apparently the company has known about this problem for some time. On a few occasions, we were able to export the presentation to a Flash file and the audio was saved. Of course, you lose a bunch of options like this, like the ability to control the presentation once it starts.

Oscar

Oscar, this is NOT A KEYNOTE ISSUE. It's a Quicktime issue. I know you have ranted about Keynote's audio abilities in another thread, but this issue is has been here from the beginning and it's a QT problem. If you're going to rant about bugs and issues, make sure you KNOW what you're talking about. THis thread is about the loss of audio from avi's and mpegs (namely mpegs).

I doubt it will ever get resolved. QT has gone through many new version updates and they have never bothered to add this feature.

My experience: with regards to MPEG-1, I think it's a Quicktime issue. Apple it seems has never been nuts about MPEG-1, even when early versions of the Quicktime Player explicitly allowed MPEG-1 editing, it was just setting reference points, and you'd have to include the ENTIRE MPEG-1 file with every saved edit. It's the muxing that seems to gum up the QT machine.

With regards to Keynote and audio in general, I am speculating: Keynote was acquired from another company, yes? Or was a NeXT STEP app?? It may have been a different beast originally, maybe not tied as tightly to the Quicktime engine, but it offers so many other attractive attributes that maybe Apple decided early on that they would just play catch-up and slowly add features as time and engineering allowed.

my .02

Message was edited by: Michael Labay