avutil/opt: preserve fractions in set_string_number()

This avoids going over a double precission float, which may loose precission

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
h264: fix slice_type value reported in decode_slice_header()

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
h264: informative error reporting in decode_slice_header()

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Merge commit '96f9fbe10933944b3eba86efa1d1ca094f2c28f8'

* commit '96f9fbe10933944b3eba86efa1d1ca094f2c28f8':
  h264: fix slice_type value reported in decode_slice_header()

See: ec51b3308effbd0f434db87efabe600cd1f8cb36
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  h264: informative error reporting in decode_slice_header()

Merged-by: Michael Niedermayer <michaelni@gmx.at>
tiny_ssim: add per-frame metrics and final ssim db number.

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