There was an error during muxing preparation (project conversion)"

Joe,

Before you burn your project to DVD or Image, goto Advanced > Delete Encoded Assets and then click Burn. The Encode in Background is checked by default to try and speed up the burn time. But I found if I did extensive editing of my project this background encoding gets messed up and I got these kinds of errors. Very frustrating, I know.

Hope this helps,

Rich

What kind of project are you burning. Can you post the details of what's in your project?

I'm having the same issue.

In theory, this should have been a 2 minute job: open my existing, working iDVD project that I built with iLife 06 and make a disk image in iLife 08. Make copies from the image.

In reality, like most of the Apple software I'm using, it's a several-hour, teeth griding lesson in extreme frustration at the simplest operation which should have taken 2 minutes.

I have a DVD project that was archived and worked just fine in iLife 06. I needed to burn another copy of the project, which consists of a single 1.35Gb .mov file encoded with the DV-DVCPRO NTSC codec and the audio as 16-bit aiff.

However, I was upgraded to iLife '08 with this Mac Pro and it seems incapable of working with this project.

I can't even recreate the project from scratch (it's really simple: a single movie file) in iLife 08.

So this says something is wrong with the movie itself, but what could that be? the codec?

Thank goodness for iLife 06. I had a copy on my MacBook Pro, and it was able to make the DVD.

It frustrates me that in the last few years, a lot of Apple's software feels like Beta, and that I'm constantly running into errors while trying to do the simplest stuff.

Why in the world is 06 capable of creating a DVD from the same assets while 08 chokes? I can't be the only one with tons of 05 and 06 projects that wants to upgrade. How could Apple have not tested this?

(or are we all the beta testers?)

I just migrated from a G5 iMac to an intel iMac and have had nothing but problems with iDVD, specifically the muxing (project conversion) issue. I have created the project from scratch, deleted encoded assets, everything suggested here and still get the error.

Does anybody have any clue how to fix this? Thanks in advance.

-BB

I've just spent 2 days using iDVD '08 V7.0.1 (1091) successfully with .mov's made from Final Cut Express. Then, suddenly, yesterday for no apparent reason my bluetooth keyboard and mouse stopped working. I thought my iMac had crashed until i plugged in a wired mouse and everything seemed ok. But....

When my iDVD project finished preparation and was ready to burn the disk "Multiplexer Error - There was an error during muxing preparation (project conversion)." told me I had lost the last 2 hours. So I power down/up and my keyboard and mouse come back so I try again, and 2 hours later the same error message although my keyboard and mouse are ok.

I've now been round this loop about 5 times (10 hours down the swanny!) and it seems that 'something' has been set somewhere inside my machine that is now causing this to happen every time. (keyboard and mouse ok)

I've used DVD+R and DVD+RW and they both used to work and do not now.

I now need either a fix for this or a large hammer! Somebody please, do you know what's happening?

Leo

Further to my last post...

I have several .mov files (via Final Cut Express 4) all originally made with the same camera since October 2007. Using iDVD '08 I attempt to burn them to a disk or make a disk image.

I use the same general layout for all projects and only about 30% of them get past the "There was an error during muxing preparation" error message in iDVD. They all have a music soundtrack in the .mov and in the .dvdproj files. I have tried removing the music from either and both but to no avail.

The one thing that WILL WORK and allow me to produce a disk image (or disk) on all of my .mov's is to remove all scenes (chapter markers within FCE 4) thereby making the movie a single, take-it-or-leave-it movie on disk complete with all music files. It does not work if you just delete the scenes within iDVD '08, it needs to be done before it is dragged in.

During further investigation I find that double-clicking on a drop zone window in iDVD (after, of course, clicking on 'edit drop zones') causes my bluetooth mouse and keyboard to stop working (POR required to find them again!) - wired mouse continues working. How many other weird and random things could be happening that I can not see?? <Edited by Moderator>

Leo

I had the same error using iMovie and iDVD but now it's fixed.

What I did is that I had to go back into imovie and make sure my chapter marks are correctly aligned with my movie (i.e. not in a middle of a transition). Also make sure your audio track "ends" correctly in the movie and not interfering with the chapter marks or transition.

I am getting this same error. I saw this discussion and was wondering if you found a fix? I have a simple slideshow of about 90 pictures and 4 itunes songs playing behind it. Thanks to anyone for some help on this!