ffmpeg

Example

Video Transcoding

Convert a video from one format to another:

ffmpeg -i input.mp4 output.avi

This command converts the input video file input.mp4 to the output video file output.avi.

Video Cropping

Clip a portion from a video:

ffmpeg -i input.mp4 -ss 00:01:30 -t 00:00:30 -c copy output.mp4

This command clips 30 seconds from the input video file input.mp4 starting at 1 minute and 30 seconds and saves the result as the output video file output.mp4.

Video Scaling

Resize the video to a specified width and height:

ffmpeg -i input.mp4 -s 640x360 output.mp4

This command resizes the input video file input.mp4 to a width of 640 pixels and a height of 360 pixels and saves the result as the output video file output.mp4.

Audio Extraction

Extract audio from a video:

ffmpeg -i input.mp4 -vn -acodec copy output.m4a

This command extracts the audio from the input video file input.mp4 and saves the result as the output audio file output.m4a.

Video Concatenation

Combine multiple videos into one video:

ffmpeg -i input1.mp4 -i input2.mp4 -filter_complex "[0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1" output.mp4

This command merges two input video files input1.mp4 and input2.mp4 into one output video file output.mp4.

Folder Image to Video

Convert all images in a folder to a video:

ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4

This command compiles all PNG format images starting with "img" in the folder in file name order into one output video file out.mp4.