avformat/utils/avformat_find_stream_info: Move max_analyze_duration setup out of the packet loop

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/bsf: document noise bitstream filter

Partially addresses ticket #3198.

Signed-off-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Do not limit blocksize when reading PCM from aiff.

Fixes ticket #3695.
avcodec/utils/ff_init_buffer_info: Favor color information from AVFrame if available

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