ffmpeg - extract stills

extract_stills.sh

#  -i input file
#  -r frames per second to extract
# -ss start time HH:MM:SS
#  -t duration to extract in seconds
#  -s image format (see below)
#     output file format where %d will be the image number
ffmpeg -i video.mp4 -r 25 -ss 00:01:22 -t 7 -s hd1080 output-%d.png

# Image formats
# -------------
# hd480   852x480
# hd720   1280x720
# hd1080  1920x1080
# 
# vga     640x480
# svga    800x600
# xga     1024x768
# 
# sqcif   128x96
# qcif    176x144
# cif     352x288
# 
# 4cif    704x576
# qqvga   160x120
# qvga    320x240
# 
# uxga    1600x1200
# qxga    2048x1536
# sxga    1280x1024
# 
# qsxga   2560x2048
# hsxga   5120x4096
# wvga    852x480
# 
# wxga    1366x768
# wsxga   1600x1024
# wuxga   1920x1200
# 
# woxga   2560x1600
# wqsxga  3200x2048
# wquxga  3840x2400
# 
# whsxga  6400x4096
# whuxga  7680x4800
# cga     320x200