fmtconvert: int32_t input to int32_to_float_fmul_scalar

It was previously declared as int.
Does not change fate results for x86.

Conflicts:

	libavcodec/ppc/fmtconvert_altivec.c

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_deshake: check rx

Fixes crash on SSE2
Fixes Ticket2443

Note, its possible to restructure the code to avoid the 16pixel limitation,
and such change is welcome!

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
FTP protocol support

Implementation of ftp protocol.

Fixes #1672

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
proresdec2: Only try to decode alpha plane if four output planes were allocated.

Fixes a crash with MPlayer.