Encode videos in WEBM and MP4 format with FFMPEG and extract first and last image

gistfile1.txt

## WebM
ffmpeg -i SOURCE_VIDEO_NAME.mov -codec:v libvpx -vf scale=1280:-1 -quality good -cpu-used 0 -b:v 1000k -qmin 10 -qmax 40 -maxrate 1000k -bufsize 2000k -threads 0 -an -pass 1 -f webm /dev/null

ffmpeg -i SOURCE_VIDEO_NAME.mov -codec:v libvpx -vf scale=1280:-1 -quality good -cpu-used 0 -b:v 1000k -qmin 10 -qmax 40 -maxrate 1000k -bufsize 2000k -threads 0 -codec:a libvorbis -b:a 128k -movflags faststart -pass 2 -f webm OUTPUT_VIDEO_NAME.webm

## MP4
ffmpeg -i SOURCE_VIDEO_NAME.mov -codec:v libx264 -vf scale=1280:-1 -quality good -cpu-used 0 -b:v 1000k -qmin 10 -qmax 40 -maxrate 1000k -bufsize 2000k -threads 0 -an -pass 1 -f mp4 /dev/null
 
ffmpeg -i SOURCE_VIDEO_NAME.mov -codec:v libx264 -vf scale=1280:-1 -quality good -cpu-used 0 -b:v 1000k -qmin 10 -qmax 40 -maxrate 1000k -bufsize 2000k -threads 0 -codec:a libfdk_aac -b:a 128k -movflags faststart -pass 2 -f mp4 OUTPUT_VIDEO_NAME.mp4

## First image
ffmpeg -i SOURCE_VIDEO_NAME.mov -r 1 -t 00:00:01 -f image2 OUTPUT_VIDEO_NAME.png

## Last image
# Get total frames 
# Search for this line : nb_frames=824
ffprobe -show_streams 36_AGE.mov
#Extract last frame
ffmpeg -i SOURCE_VIDEO_NAME.mov -vf "select='eq(n,LAST_INDEX_MINUS_ONE)'" -vframes 1 OUTPUT_VIDEO_NAME.png