NASA’s Perseverance rover uses ffmpeg.
Mars Rover Perseverence FFmpeg
20+ FFmpeg Commands For Beginners - OSTechNix
CrossFade, Dissolve, and other Effects using FFmpeg’s xfade Filter - OTTVerse
ffmpeg -i input.mp4 -ss 01:19:27 -to 02:18:51 -c:v copy -c:a copy output.mp4
# This will cut out the section from about 1h19min (after the -ss
# command) to 2h18min (after the -to command). The copy parts of the
# command are meant to copy both the original audio and video content
# without recompressing. This means that the above command only takes a
# few seconds to run.
ffmpeg -i input.mp4 -ss 00:01:10 -t 00:01:05 -c:v copy -c:a copy output.mp4
# This will extract 1min5sec (using the -t flag) starting from
# 1min10sec (the -ss flag) in the file. Happy trimming!
cat fileList.txt
file '/home/file1.mp4'
file '/home/file1.mp4'
ffmpeg -f concat -safe 0 -i fileList.txt -c copy mergedVideo.mp4ffmpeg -i infile.mov -acodec copy -vcodec copy outfile.mp4ffmpeg -i inputClip.mp4 -vf "drawtext=text='©Krishna':x=(1100-text_w):y=(600-text_h):fontsize=32:fontcolor=black:box=1:[email protected]:boxborderw=5" -c:a copy output.mp4
# box : this is either 1 (enabled) or 0 (disabled)
# boxcolor: [email protected] implies a white colored box with a 50% opacity.
# boxborderw is the width of the box’s border and the border color is taken from boxcolor.
# Display Movie Credits using FFmpeg’s drawtext filter
ffmpeg -i inputClip.mp4 -vf "drawtext=textfile=credits.txt:x=200: y=h-80*t: fontsize=36:[email protected]: box=1:[email protected]" -c:a copy outputCredits.mp4
# specify the speed of scrolling using the y text position. Here, you
# can provide an equation instead of a constant number. You start off
# by telling by FFmpeg that the y-position is h - 80*t so that
# everytime the value of time increases, the value of h - 80*t*
# decreases, and the text is displayed higher. Tip:
# change 80 to 100 or 120 and see the effect on the scrolling
# speed.