AVInputFormat ff_lavfi_demuxer
static const AVInputFormat *const indev_list[]
AVInputFormat ff_sndio_demuxer
AVInputFormat ff_alsa_demuxer
AVInputFormat ff_xcbgrab_demuxer
AVInputFormat ff_fbdev_demuxer
AVInputFormat ff_oss_demuxer
AVInputFormat ff_v4l2_demuxer