====== av_parser_parse2 ======
(Parse a packet. parameter * AVCodecParserContext *s, * AVCodecContext *avctx, * uint8_t **poutbuf, * int *poutbuf_size, * const uint8_t *buf, * int buf_size, * int64_t pts, * int64_t dts, * int64_t pos)
Parse a packet.return: int
==== Core functions/structures. ====