Muxing AVI + audio - DOESN'T WORK

[slvtnplt]

Hi, I've been trying to mux 1 audio-less .avi file and 1 video-less .aac file. I've also tried it after converting the .aac file to .mp3. However, the progress bar simply does that moving grey thing that means that nothing's actually happening. I've left it on for some 6 hours before, and nothing gets done.

Can someone help me out here? Is there something I'm missing? I'd really appreciate it, thanks.

[TugBoat]

I just went through the gauntlet trying to mux AC3 6 channel into an avi, so I'm speaking from recent experience. First, you can't put an AAC into an AVI, doesn't work. A better choice is AC3 or MP3. Constant Bitrate MP3 that is, please don't put a Variable Bitrate MP3 in a movie...

And, the version of ffmpeg that's in ffmpegX generally doesn't like AACs. You would be better off using something else to convert an AAC to whatever. Once you have a 'good' stereo AC3 or MP3, ffmpegX should mux it without a problem. I've also had good luck using D-Vision 3 to mux stereo AC3 and MP3 audio.

My recent bout ended in VPC and XP to use Virtual dub to mux a Compressor generated AC3 5.1 audio file with a ffmpegX created Xvid video that would work correctly in QT. The AVI muxed by ffmpegX always ended with an audio file seen as way too short in QT. And apparently, D-Vision doesn't do 5.1 audio. Had to use a PC just to mux a 5.1 audio file...pathetic....

[sturzi]

Hi
there's another option for muxing your files. if you don't care that the container isn't an .avi, then you could use the .mkv (matroska) format...
this container supports about every audio/video-format. I myself mux Xvid- or h.264-Video and variable Bitrate AAC-audio without any problems. multi-channel AC3 wouldn't be a problem either...
one negative point is that it's command line, but if you're just a bit familiar with the terminal it works great...
the tools are called mkvtoolnix
http://www.versiontracker.com/dyn/moreinfo/macosx/23606
BTW: .mkv supports additional subs and chapters etc. it's really cool

hope it helps