avfilter/framepack: use FF_CEIL_RSHIFT()
fate: add a fate-filter-framepack rule
avfilter/vf_uspp: clear AVPacket to not leave uninitialized memory

Fixes CID1260707

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
ffprobe: Support extracting the number of reference frames

Fixes Ticket3141

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/vf_yadif: add >8bit planar rgb formats

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