Revise German translation of some help messages.

Translate 'channel' as 'Programm' throughout.

Additionally, use passive phrasing.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@36518 b3059339-0415-0410-9bf9-f77b7e298cf2
Avoid resetting fields when we will never have set them in the first place.

Should avoid memleak issues with h264_vda.
Untested, and h264_vda should not preferably be changed in FFmpeg
to not expose such details of its implementation.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@36519 b3059339-0415-0410-9bf9-f77b7e298cf2
codecs.conf: add DYM4 to mpeg4

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@36520 b3059339-0415-0410-9bf9-f77b7e298cf2