statela.blogg.se - Ffmpeg commands image and video

Skip the first 10 seconds of the video and make a 5 second gifĪdd -ss 10 and -t 5 to the ffmpeg command.

- layers Optimize - : optimizes the resulting gif greatly reduces file size especially if the frames have a lot of similar images (e.g.

-delay : specify the pause between frames I make this equal to -r option in ffmpeg.

-vf scale=n:-1:flags=lanczos : I add this to the ffmpeg command when I want to force the gif to be a different resolution than the source video while keeping the quality high, n = frame width.

-r : set the frame rate I make this equal to -delay option in convert.

-t : duration specify the length of gif to create.

but Im not sure which coded do I use in here (Im just beginning my adventure with ffmpeg), however I found on this webpage this command: ffmpeg -i INPUT -c:a copy -x265-params crf25 OUT.

-ss : start time offset specify the time of the video to start extracting the frames/creating the gif Normally I start recording the camera image with the command: ffmpeg -y -f vfwcap -r 25 -i 0 OUT.mp4.

You can check the help or man pages of ffmpeg and convert for more details about the available options but here are a few that I’ve found to be the most useful. Ffmpeg -i -r 10 -f image2pipe -vcodec ppm - | convert -delay 10 -loop 0 -layers Optimize.