Marvelous Marv

This could be confusing, but I will plow ahead.

I located a video online that I wanted to preserve for myself. It downloaded as an mp4.

Wanted to send it to a friend, but my normally faithful AVS Video Converter would only convert the video portion. All of the resulting files, in any format, lacked audio. (I could only play the original in QuickTime and VLC, by the way).

Sometimes I will spend way too long on something that pisses me off. So I used VLC to create an audio mpg, and tried to add that with an editor to the soundless MPG I'd created from the original video. No dice until I converted the audio mpg to a .WAV, after which it was possible to combine that with the mpg.

Perhaps someone knowledgeable can tell me why I encountered the problem, and what would be an easier way to solve it.

Thanks.

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Where there exists a desire for advantages not possessed, the mind which does not potentially possess them by means of its own energies is apt to look with hatred and malice on those who do. The person bestirring himself with hopeful prospects to improve his circumstances is the one who feels good-will towards others engaged in, or who have succeeded in, the same pursuit. And where the majority are so engaged, those who do not attain the object have had the tone given to their feelings by the general habit of the country, and ascribe their failure to want of effort or opportunity, or to their personal ill luck. But those who, while desiring what others possess, put no energy into striving for it, are either incessantly grumbling that fortune does not do for them what they do not attempt to do for themselves, or overflowing with envy and ill-will towards those who possess what they would like to have.
– Considerations on Representative Government, John Stuart Mill