[FFmpeg-user] dependence between pic_fmts and and fmt_conversion_table ?

[Soho Soho123]

hi all,

I see the code in

libavutil/pixdesc.c
const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB]

libavdevice/v4l2.c:
static struct fmt_map fmt_conversion_table[] = {}

I can use ffmpeg -pix_fmts to display the content of av_pix_fmt_descriptors.
but how I can verify the content of fmt_conversion_table?
because I do not know the dependence of them.
does anyone have idea about the dependence of them?