avcodec: add dpx parser

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avcodec/dpx: make .long_name more descriptive

Signed-off-by: Paul B Mahol <onemda@gmail.com>
avcodec/flac_parser: export sample_rate also when PARSER_FLAG_COMPLETE_FRAMES is set

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/oggparseflac: fix handling of old flac in ogg

Improves handling of the file in Ticket1617

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
ffmpeg: dont detect slight (0.1sec) backward moving dts as discontinuity