ffmpeg snippets collection

ffmpeg -fadein , fadeout.md

Fade in first 15 seconds of audio:

afade=t=in:ss=0:d=15

Fade out last 25 seconds of a 900 seconds audio:

afade=t=out:st=875:d=25

https://stackoverflow.com/a/27913617/3957754

ffmpeg -i audio.mp3 -af 'afade=t=in:ss=0:d=3,afade=t=out:st=27:d=3' out.mp3

Fade out start approx from second 4

ffmpeg -i one.wav -af 'afade=t=out:st=0:d=4' out.mp3

ffmpeg add background sound soundtrack.md

ffmpeg -i video.mp4 -i audio.wav -map 0:v -map 1:a -c:v copy -shortest output.mp4 

ffmpeg concatenate videos.md

ffmpeg -i this_november_f.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts this_november_f.ts
ffmpeg -i slide_sao_tribute_f.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts slide_sao_tribute_f.ts
ffmpeg -i beta1.0.4_23_Secs.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts beta1.0.4_23_Secs.ts
ffmpeg -i "concat:this_november_f.ts|slide_sao_tribute_f.ts|beta1.0.4_23_Secs.ts" -c copy output.mp4

ffmpeg cut split videos.md

from second 0 + 55 seconds

ffmpeg -ss 0 -t 55 -i ini.mp4 -acodec copy parte1.mp4

from second 55 until the end

ffmpeg -ss 55 -i ini.mp4 -acodec copy parte2.mp4

from second 55 + 59 seconds

ffmpeg -ss 55 -t 59 -i ini.mp4 -acodec copy parte2.mp4

from second 52 and 33.9 seconds

ffmpeg -ss 52 -i VID-20221127-WA0008.mp4 -c copy -t 33.9 output.mp4

ffmpeg cut wav.md

ffmpeg -ss 0 -t 3 -i notification.wav notification-3seg.wav

ffmpeg ffprobe get file info

ffprobe -loglevel error -show_streams -i foo.wav

ffmpeg get video dimension.md

ffprobe -v error -select_streams v -show_entries stream=width,height -of csv=p=0:s=x input.m4v

• https://stackoverflow.com/a/29585066/3957754

ffmpeg image to video.md

ffmpeg -loop 1 -i image.png -c:v libx264 -t 15 -pix_fmt yuv420p -vf scale=320:240 out.mp4

ffmpeg obfuscate.md

https://ottverse.com/blur-a-video-using-ffmpeg-boxblur/

ffmpeg windows

https://github.com/BtbN/FFmpeg-Builds/releases

increase audio volume

ffmpeg -i input.mp3 -af 'volume=1.5' output.mp3