Hi all.

Here are two files:
http://dl.dropbox.com/u/11507187/F20116.mpg
and
http://dl.dropbox.com/u/11507187/recoded_f20116.mpg

The "recoded_" file was created with the following mencoder command:

Code:
mencoder -of mpeg -oac twolame -ovc lavc -vf scale=720:576,fixpts,harddup -srate 48000 -twolameopts br=384:mode=stereo:errprot=1 -ofps 25 -lavcopts vcodec=mpeg2video:keyint=12:vbitrate=15000:vmax_b_frames=2:vratetol=750:vrc_minrate=15000:vrc_maxrate=15000:vrc_buf_size=5000 -mpegopts format=dvd:tsaf:vaspect=4/3 F20116.mpg -o recoded_f20116.mpg
I use MEncoder Sherpya-SVN-r32848-4.2.5 (windows, precompiled version, downloaded from the internet).

It seems, there is something wrong with the source file, since the resulting file has a "Brrrrrrr"-like sound in the end.
Could anyone explain me what is wrong with the file, and suggest correct mencoder options that could help in avoiding this sound?
The option -endpos won't do, since I'm not allowed to lose data.
Thanks a lot in advance.

Please, don't ask me about consciousness of this conversion.
It is a part of a larger operation, I've just skipped all extraneous details.
The larger operation is automatic joining of two or more mpeg files when they have different characteristics (bitrate, picture size, etc).
This effect doesn't appear always, therefore I cannot just specify -endpos equal to the file duration minus several milliseconds.

Again, thanks a lot for the attention and help