How to Dub and Audio File into a Video using Mplayer

If you have a video that you want to change the audio with a given mp3, try this command:

mencoder original.wmv -oac copy -ovc copy -audiofile dub.mp3 -o new.wmv

where: |file|description| |—|—| |original.wmv|The original video to dub.| |dub.mp3|An audio file with the new audio. This file should be the same length as the video.| |new.wmv|The final video that is created.|

There will likely be a lot of messages that look like this:

Pos: 522.3s  14486f (60%) 2110.43fps Trem:   0min  32mb  A-V:-0.002 [117:127]
71 duplicate frame(s)!
Pos: 522.3s  14487f (60%) 2110.27fps Trem:   0min  32mb  A-V:0.001 [117:127]
30 duplicate frame(s)!
Pos: 522.4s  14488f (60%) 2110.42fps Trem:   0min  32mb  A-V:-0.000 [117:127]
31 duplicate frame(s)!
Pos: 522.4s  14489f (60%) 2110.56fps Trem:   0min  32mb  A-V:-0.001 [117:127]

These are just warnings, about something that will not prevent the conversion from completion. There may be thousands of these lines, but the conversion will eventually complete. Be patient.