lavfi/mp: remove mp=qp

The filter does nothing.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
doc: Add missing hashes and dates to APIChanges

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avfilter/vf_decimate: fix crash with gray8

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avfilter/vf_decimate: add gray16 and yuv440p

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avformat/bmv: remove unused variable

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avutil: add av_get_colorspace_name()

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