After downsizing and reencoding the video (and possibly
decoding the AC3-Stream), the video and audio
part of the original material have to be brought back together.
This step is also called Multiplexing of Audio and Video
(this means bringing audio and video back together).
Dependent on your desires you have two possibilities. But
if you already encoded the video you must have already chosen
one. For people with Dolby Digital receivers it is
useful to conserve the AC3-stream and use a smaller
video-bitrate. (AC3 is considerably larger
in size than MP3: AC3-bitrate: 384-448 kbit/s
; MP3-bitrate: you may choose but 128-160 kbit/s
give good quality ; OGG Vorbis-bitrate: even lower
than MP3 ~80 kbit/s). Personally I prefer having the
Dolby Digital Sound.
Depending on your choice choose the appropriate section
on multiplexing:
