Hacker News Reader

Comment by dqv | Hacker News Reader

Here's mine for doing crab videos

    ffmpeg -ss 66 -i crab.mp4 -t 30 -crf 27 -preset veryfast -vf "drawtext=fontfile=/usr/share/fonts/truetype/liberation/LiberationSans-Bold.ttf:text='YOUR TEXT HERE':fontcolor=white:fontsize=240:shadowx=5:shadowy=5:box=1:boxcolor=black@0.0:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2:enable='between(t,9,30)',scale=iw/3:ih/3" -c:v libx264 -filter:a "volume=0.2" -c:a libmp3lame output.mp4

You just need to get the original crab rave video from youtube: https://www.youtube.com/watch?v=LDU_Txk06tM

You might also need to supply your own font path I'm not sure how universal they are.

View on HN

If you don't mind my asking... what's a crab video

You afix a caption describing an unfortunate scenario onto the song for comical juxtaposition, since the Crab Rave song itself is jovial sounding. For example, one might add the caption "I got fired".

https://www.youtube.com/watch?v=TKg8GSsPSMg

When I switched to Linux and started using FFmpeg, the idea of automating video production (this thing that was so time intensive in my mind) was so appealing. This is an awesome little example. What a damn good piece of software.

Just wait until you try out Gstreamer

(and suffer a few weeks learning it! I don't even remember C++ being so painful)

I downloaded the video (720p) and I have to tweak slightly the command to make it work on MacOS Catalina (FFmpeg installed via brew)

  ffmpeg -ss 66 -i crab.mp4 -t 30 -crf 27 -preset veryfast \
  -vf "drawtext=fontfile=~/Library/Fonts/SF-Compact-Display-Bold.otf:text='YOUR TEXT HERE':fontcolor=white:fontsize=68:shadowx=5:shadowy=5:box=1:boxcolor=black@0.0:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2:enable='between(t,9,30)'" \
  -c:v libx264 -filter:a "volume=0.2"  output.mp4

Thank you very much, crazy how powerful but hard is FFmpeg.

Ah yes! Sorry the settings I posted are for the original crab rave music video in 4k.

Reply on news.ycombinator.com