As you have found out, FLV Export/Share is always multiplexed. Other formats/CODEC's will most likely have the Multiplexer Tab.

As for the Export from the Toolbar, that is only for saving Titles as Templates. As of about PrE 7, all of the old Export functions have been moved to the Share Tab.

Now, if with an option, such as FLV, or other formats, with both Export Audio & Export Video checked, and the Multiplexer set to "DVD," or anything but "None," if you are not getting your Audio, it's time to discuss where the Audio is placed on the Timeline. There have been problems encountered with some Audio Clips on either/both of the Fixed Audio Tracks, Soundtrack and Narration. I had not read of those problems with PrE 10, but they did manifest themselves in PrE 7 - PrE 9. The "fix" in nearly every case was to Move the Audio Clips to a free, "regular" Audio Track, such as Audio 1, 2, 3, etc.. The problems seemed to be Project-specific, in that for many of those same users, the Soundtrack and Narration Tracks worked fine, in other Projects. I have never found what the common thread is, when they do not function properly.

In your Project, are either the Soundtrack, or Narration Track (both Fixed Tracks, and always present) being used?

If they are, as a test, I would Move the Audio Clips to a free regular Audio Track, and Share to the desired format/CODEC.

Also note that MP3's, though a supported format/CODEC, can cause issues too. Some will work perfectly, though some just refuse to work. This ARTICLE goes into more detail.

Good luck,

Hunt

I was afraid of that, from your original post. Thank you for that clarification.

Now, the Audio in those MP4's, is most likely MP3.

As a test, I would create a New Project, that matches the Flip camera's footage. Then, Import the Flip footage, as before. However, and for this test, I would use an audio-editing program, such as Audacity, to rip the Audio from those MP4's, and Save_As a PCM/WAV. A setting of 48KHz 16-bit is ideal. Next, Import that WAV file into the Project, and drag it to, say Audio 2. Delete the original Audio from the files. Do a Share, checking that both Export Audio & Export Video are checked, and if it is available for your test Share, that the Multiplexer Tab is set to DVD. Does that PCM/WAV now Export OK?

Thanks for your patience and your information.

Good luck,

Hunt

Great news.

I thought that Audacity could rip from MP4's, but guess that I am incorrect. I use Adobe Audition, but as it is a fairly expensive program, I do not just blindly recommend it. I need to open up Audacity, and check for more limitations. Thank you for pointing that inability out to me.

Good luck, and happy editing,

Hunt

Hm-m, interesting, and thank you for reporting.

Good luck,

Hunt