ffprobe

Multimedia stream analyzer. More information: https://ffmpeg.org/ffprobe.html.

• Display all available stream info for a media file:
  ffprobe -v error -show_streams {{input.mp4}}
• Display media duration:
  ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 {{input.mp4}}
• Display the frame rate of a video:
  ffprobe -v error -select_streams v:0 -show_entries stream=avg_frame_rate -of default=noprint_wrappers=1:nokey=1 {{input.mp4}}
• Display the width or height of a video:
  ffprobe -v error -select_streams v:0 -show_entries stream={{width|height}} -of default=noprint_wrappers=1:nokey=1 {{input.mp4}}
• Display the average bit rate of a video:
  ffprobe -v error -select_streams v:0 -show_entries stream=bit_rate -of default=noprint_wrappers=1:nokey=1 {{input.mp4}}