Get a List of Video Formats¶

gst-inspect-1.0 videoconvert \
  | sed -rne '/format: \{/{s/^[^{]+\{ //;s/ }$//;s/, /\n/g;p;q}'

Get a List of Audio Formats¶

gst-inspect-1.0 audioconvert \
  | sed -rne '/format: \{/{s/^[^{]+\{ //;s/ }$//;s/, /\n/g;p;q}'