_cgo_dummy_export
av_frame_alloc
av_frame_free
av_free
av_free_packet
av_get_channel_layout_nb_channels
av_get_default_channel_layout
av_init_packet
av_lockmgr_register
av_opt_set_int
av_opt_set_sample_fmt
av_read_frame
av_register_all
av_rescale_q
av_rescale_rnd
avcodec_close
avcodec_decode_audio4
avcodec_find_decoder
avcodec_open2
avformat_close_input
avformat_find_stream_info
avformat_open_input
qweqwe
swr_alloc
swr_convert
swr_free
swr_get_delay
swr_init