Tips for Avidemux - "Trouble initialising audio device", "Encoder not initialised" etc.

Tips for converting videos for DVD player playback using Avidemux -

1. A very simple fix for avidemux "Trouble initialising audio device" -

Go to "tools->preferences->audio->alsa device" and change it to "default" instead of "dmix"

Wonder why "default" is not the default for that setting!

2. Best encoding settings for playback on a DVD player -

Video - MPEG-4 ASP (Xvid4)
Audio - MP3 (LAME)

3. If you get an error "Encoder not initialised" then most probably the input audio frequency is non standard. Turn on "Audio->Filters->Resampling (Hz)" and that should fix the problem.