FFmpeg

encoding-defaults.pl

# FFmpeg encoding defaults
use warnings;

$dir = 'C:/Steven/Desktop/ffmpeg-02b651a/libavformat';
@files = glob "$dir/*";
local $/;
$re = qr/AVOutputFormat.*?;/s;

for (@files) {

open FILE, $_;

@matches = <FILE> =~ /$re/g;

print @matches;

}

extract-frame.sh

# Cross platform
# FFmpeg, Extract a frame
# The correct way is to put -ss first, then -i.
# If you put -i first it will cause sync issues. 
ffmpeg -ss 10 -i in.mp4 -vframes 1 out.png

ffmpeg-h264.sh

# Cross platform
# FFmpeg will assume
# -c:a aac
# -c:v libx264
# -ar [same as input]
ffmpeg -i in.avi -ac 2 -ab 320k -strict experimental -threads 6 out.mp4

ffmpeg-loop.sh

# Cross platform
# Video from song and image
# trunc rounds towards zero
# youtube will reencode the audio so you need -c:a copy

# standard
ffmpeg -loop 1 -i image.jpg -i audio.mp3 -c:v libx264 -vprofile main -vf scale=trunc(oh*a/2)*2:480 -c:a copy -shortest out.flv

# wide
ffmpeg -loop 1 -i image.jpg -i audio.mp3 -c:v libx264 -vprofile main -vf scale=854:trunc(ow/a/2)*2 -c:a copy -shortest out.flv

ffmpeg-trim-video.sh

# Cross platform
# The correct way is to put -ss first, then -i.
# If you put -i first it will cause sync issues.
ffmpeg -ss [start] -t [duration] -i in.mp4 -c copy out.mp4

join-video-files.sh

# Cross platform
# FFmpeg join video files
ffmpeg -ss 100 -t 10 -i in.mp4 -c copy -bsf h264_mp4toannexb 100.h264

ffmpeg -ss 200 -t 10 -i in.mp4 -c copy -bsf h264_mp4toannexb 200.h264

ffmpeg -i concat:"100.h264|200.h264" -i in.mp3 -c copy out.mp4

screencast-linux.sh

# FFmpeg Screencast Linux
ffmpeg -an -s hd1080 -r 24000/1001 -f x11grab -i :0.0 -sameq out.avi

screencast-windows.bat

:: FFmpeg Screencast Windows
ffmpeg -f dshow -i video=screen-capture-recorder -r 24000/1001 -q 1 out.avi