how to get missing multimedia packages

[Pierre Frenkiel <pierre.frenkiel@gmail.com>]

hi,
 some important packages are missing in the Debian official repositories
 cinelerra, avidemux
 the offical recommendations say:

   Please do also consider to entirely remove unofficial third-party
   repositories from your /etc/apt/sources.list file. The few more features
   added to the packages provided there do often not compensate for the
   breakage they may cause.

 So, how am I supposed  to get these packages. The only way I see
 is compilation, but is there any chance that they will be officially
 supported by Debian one day?

best regards,
--
Pierre Frenkiel