avfilter/avfilter: check allocation failure in ff_insert_pad()

Signed-off-by: Paul B Mahol <onemda@gmail.com>
changelog: add ffv1 yuva and dts streamid change
avfilter/af_aecho & af_compand: use extended_data

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avfilter: avoid testing float == 0

This fixes the hypothetical case of rounding errors causing
incorrect values to be used.
We do not use *_EPSILON, because non trivial expressions can contain
errors larger than that making a zero equality test with *_EPSILON
unreliable.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/jpeg2000dec: print invalid cdx/y values

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/g2meet: Fix order of align and pixel size multiplication.

Fixes out of array accesses
Fixes Ticket2922

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