[MPlayer-users] Recoding to VCD Using MEncoder Only

[Nico Sabbi]

Gordan Bobic wrote:

>Is there any reason why this cannot be done? I presume that it cannot be 
>done, since I have found the mencvcd script in the TOOLS directory 
>which seems to use an exceedingly long winded way of recoding files 
>into VCD format, using mjpegtools.
>
>I think I have managed to get the mencoder setup almost right to achieve 
>the same thing without the clutter of all the other seemingly inferior 
>tools and overheads of doing the same job several times, but I am stuck 
>in one last tiny detail.
>
>Here is the script I use:
>
>#!/bin/bash
>mencoder	-oac lavc	\
>		-ovc lavc	\
>		-ofps 25	\
>		-of mpeg	\
>		-lavcopts 
>vcodec=mpeg1video:acodec=mp2:vbitrate=1150:abitrate=224:vrc_buf_size=327:vrc_maxrate=1150	
>  
>

you missed keyint=12, but generally dvd players tolerate much longer 
values; 2 passes and mbd=2 are reccomended


>\
>		-vf scale=352:288,dsize=4/3	\
>		-af resample=44100:0:2	\
>		$1 -o $2
>
>This seems to work really well, except for one small problem - the
>"-af resample=44100:0:2" part doesn't seem to do what the documentation 
>says it should (or maybe I am reading it wrong).
>
>  
>

-srate 44100 usually works well

>I have videos encoded with varying frequencies other than 44100 (e.g. 
>22050, 48000), and I have to make this into 44100 to make it VCD 
>compliant. However, the files encoded using the above script still have 
>the same audio frequency (confirmed using "mplayer -identify") as the 
>source file. The video seems to be in the correct format, but the audio 
>is not.
>
>What I am I doing wrong? I would really like to avoid using the 
>mjpegtools script if at all possible because it takes much longer.
>
>TIA.
>
>Gordan
>
>  
>