FFmpeg CLI

Process video and audio using FFmpeg CLI for transcoding, cutting, merging, audio extraction, thumbnails, GIFs, speed, filters, subtitles, and watermarks.

Quick Reference

Task	Command
Cut video	{baseDir}/scripts/cut.sh -i <input> -s <start> -e <end> -o <output>
Merge clips	{baseDir}/scripts/merge.sh -o <output> <file1> <file2> ...
Extract audio	{baseDir}/scripts/extract-audio.sh -i <video> -o <output.mp3>
Generate thumbnail	{baseDir}/scripts/thumb.sh -i <video> -t <timestamp> -o <out.jpg>
Create GIF	{baseDir}/scripts/gif.sh -i <video> -s <start> -e <end> -o <out.gif>
Convert format	{baseDir}/scripts/convert.sh -i <input> -o <output.mp4>
Change speed	{baseDir}/scripts/speed.sh -i <input> -r <0.5-2.0> -o <output>
Add watermark	{baseDir}/scripts/watermark.sh -i <video> -w <image> -o <output>

Scripts

cut.sh - Cut video segment

bash

{baseDir}/scripts/cut.sh -i video.mp4 -s 00:01:30 -e 00:02:45 -o clip.mp4

merge.sh - Concatenate videos

bash

{baseDir}/scripts/merge.sh -o merged.mp4 part1.mp4 part2.mp4 part3.mp4

extract-audio.sh - Pull audio track

bash

{baseDir}/scripts/extract-audio.sh -i video.mp4 -o audio.mp3

thumb.sh - Extract frame as image

bash

{baseDir}/scripts/thumb.sh -i video.mp4 -t 00:00:15 -o frame.jpg

gif.sh - Convert clip to GIF

bash

{baseDir}/scripts/gif.sh -i video.mp4 -s 00:00:10 -e 00:00:15 -o clip.gif

convert.sh - Transcode to new format

bash

{baseDir}/scripts/convert.sh -i input.avi -o output.mp4

speed.sh - Adjust playback speed

bash

{baseDir}/scripts/speed.sh -i video.mp4 -r 2.0 -o fast.mp4  # 2x speed
{baseDir}/scripts/speed.sh -i video.mp4 -r 0.5 -o slow.mp4  # 0.5x speed

watermark.sh - Overlay image watermark

bash

{baseDir}/scripts/watermark.sh -i video.mp4 -w logo.png -o output.mp4

Notes

• All scripts support common video formats (mp4, avi, mov, mkv, webm, etc.)
• Output quality is optimized for balanced file size and clarity
• Use -h or no args to see script usage