Clarify the error message when video width, height, or framerate are not specified. Patch by Michel Bardiaux (mbardiaux AT mediaxim DOT be)
Clarify the error message when video width, height, or framerate are not
specified.
Patch by Michel Bardiaux (mbardiaux AT mediaxim DOT be)


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@11551 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg