Cannot install vlc on bullseye

["R. Ramesh" <rramesh@verizon.net>]

Hi,

  I am trying to install vlc and I get this error
> n-lata [rramesh] 284 > apt -s install vlc
> NOTE: This is only a simulation!
>       apt needs root privileges for real execution.
>       Keep also in mind that locking is deactivated,
>       so don't depend on the relevance to the real current situation!
> Reading package lists... Done
> Building dependency tree... Done
> Reading state information... Done
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
> The following information may help to resolve the situation:
>
> The following packages have unmet dependencies:
>  libpostproc55 : Depends: libavutil56 (= 7:4.3.2-0+deb11u2) but 
> 10:4.4-dmo4+deb11u2 is to be installed
>  libswscale5 : Depends: libavutil56 (= 7:4.3.2-0+deb11u2) but 
> 10:4.4-dmo4+deb11u2 is to be installed
> E: Unable to correct problems, you have held broken packages.
I cannot understand why libpostproc55 will need a older version of 
libavutil56.  My sources.list is this

> deb http://ftp.us.debian.org/debian/ bullseye main contrib non-free
> deb-src http://ftp.us.debian.org/debian/ bullseye main
>
> deb http://www.deb-multimedia.org bullseye main non-free
> deb http://www.deb-multimedia.org bullseye-backports main
>
> deb http://security.debian.org/debian-security 
> bullseye-security/updates main
> deb-src http://security.debian.org/debian-security 
> bullseye-security/updates main
>
> # bullseye-updates
> deb http://ftp.us.debian.org/debian/ bullseye-updates main
> deb-src http://ftp.us.debian.org/debian/ bullseye-updates main

I also have these two rules in preferences.d/multimedia as in the past I 
had issues with same packages in both deb-multimedia and debian regular 
when I was told these rules will help.
> Package: *
> Pin: release o=Unofficial Multimedia Packages,n=bullseye
> Pin-Priority: 332
>
> Package: *
> Pin: release o=Unofficial Multimedia Packages,n=bullseye-backports
> Pin-Priority: 331

Any help appreciated.

Regards
Ramesh