DEVEDE

http://packages.trisquel.info/dagda/devede

tengo una duda al tratar de instalar devede por consola me aparece lo siguiente:
The following NEW packages will be installed:
devede dvdauthor{a} libavcodec-extra-52{ab} libavformat-extra-52{ab}
libavutil-extra-50{ab} libbluray0{a} libpostproc-extra-51{ab} librtmp0{a}
libsvga1{a} libswscale-extra-0{ab} libvdpau1{a} libx86-1{a}
libxvidcore4{a} mencoder{a} mplayer{a} vcdimager{a}
0 packages upgraded, 16 newly installed, 0 to remove and 0 not upgraded.
Need to get 13.1 MB/13.4 MB of archives. After unpacking 29.0 MB will be used.
The following packages have unmet dependencies:
libpostproc-extra-51: Conflicts: libpostproc51 but 4:0.6.6-0ubuntu0.11.04.1 is installed.
libavcodec-extra-52: Conflicts: libavcodec52 but 4:0.6.6-0ubuntu0.11.04.1 is installed.
libavutil-extra-50: Conflicts: libavutil50 but 4:0.6.6-0ubuntu0.11.04.1 is installed.
libavformat-extra-52: Conflicts: libavformat52 but 4:0.6.6-0ubuntu0.11.04.1 is installed.
libswscale-extra-0: Conflicts: libswscale0 but 4:0.6.6-0ubuntu0.11.04.1 is installed.
The following actions will resolve these dependencies:

Remove the following packages:
1) blender
2) ffmpeg
3) libavcodec52
4) libavdevice52
5) libavfilter1
6) libavformat52
7) libavutil50
8) libpostproc51
9) libswscale0
10) winff
11) winff-doc

Accept this solution? [Y/n/q/?] n
The following actions will resolve these dependencies:

Keep the following packages at their current version:
1) devede [Not Installed]
2) libavcodec-extra-52 [Not Installed]
3) libavformat-extra-52 [Not Installed]
4) libavutil-extra-50 [Not Installed]
5) libpostproc-extra-51 [Not Installed]
6) libswscale-extra-0 [Not Installed]

Install the following packages:
8) libavdevice-extra-52 [4:0.6.2-1ubuntu2+5.0trisquel1 (dagda)]
9) libavfilter-extra-1 [4:0.6.2-1ubuntu2+5.0trisquel1 (dagda)]

Downgrade the following packages:
10) ffmpeg [4:0.6.6-0ubuntu0.11.04.1 (dagda-security, dagda-updates, now) ->

sobre todo esta parte me preocupa cuando me pide que remueva estas aplicaciones que ya tengo instalas no se si esto me pueda causar algún daño a mi sistema:

Remove the following packages:
1) blender
2) ffmpeg
3) libavcodec52
4) libavdevice52
5) libavfilter1
6) libavformat52
7) libavutil50
8) libpostproc51
9) libswscale0
10) winff
11) winff-doc