FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
FFmpeg
Any of the following global options can be seen in the ffmpeg manpage
Commands
| Description | Command |
|---|---|
| Change Loglevel and print a less verbose stats | ffmpeg -i input.mp4 -loglevel warning -stats output.mkv |
| Converting Media Formats | ffmpeg -i input.mp4 output.mkv |
| Extracting Audio From Videos | ffmpeg -i input.mp4 -vn audio.mp3 |
| Resizing Videos | ffmpeg -i input.mp4 -vf scale=1280:720 resized.mp4 |
| Trimming a video (From 3s) | ffmpeg -i input.mp4 -ss 00:03 -c copy cut.mp4 |
| Trimming a video (To 5s) | ffmpeg -i input.mp4 -to 00:05 -c copy cut.mp4 |
| Trimming a video (From 3s to 5s) | ffmpeg -i input.mp4 -ss 00:03 -to 00:05 -c copy cut.mp4 |
| Trimming a video (From 3s during 5s) | ffmpeg -i input.mp4 -ss 00:03 -t 00:05 -c copy cut.mp4 |
| Adding Subtitles | ffmpeg -i input.mp4 -vf "subtitles=subtitles.srt" output-subtitles.mp4 |
| Creating a Video Slideshow from Images | ffmpeg -framerate 1 -i img%03d.jpg slideshow.mp4 |
| Extracting Frames from a Video | ffmpeg -i input.mp4 -vf "select=mod(n\,100)" -vsync vfr frame%03d.png |
| Extracting a frame each second from a video | ffmpeg -i input.mp4 -vf fps=1 output_%04d.jpg |
| Speeding Up or Slowing Down a Video | ffmpeg -i input.mp4 -vf "setpts=0.5*PTS" speed.mp4 |
| Concatenating Videos | ffmpeg -i "concat:input1.mp4|input2.mp4|input3.mp4" -c copy concatenated.mp4 |
| Rotating a video (transpose=0,1,2,3 1=90º) | ffmpeg -i input.mp4 -vf "transpose=1" rotated.mp4 |
| Creating a video thumbnail (@ 3 seconds) | ffmpeg -i input.mp4 -ss 00:03:00 -vframes 1 thumbnail.jpg |
| Extracting Audio Channels | ffmpeg -i input.mp4 -map_channel 0.1.0 audio_channel.wav |
| Changing Volume (80% Volume) | ffmpeg -i input.mp4 -filter:a "volume=0.80" output-80-volume.mp4 |
| Creating a Video Loop (10min=600s loop) | ffmpeg -stream_loop -1 -i input.mp4 -c copy -fflags +genpts -t 600 loop.mp4 |
| Adding a Video Overlay (Between 0-20s @-10,10) | ffmpeg -i main.mp4 -i overlay.mp4 -filter_complex "[0:v][1:v] overlay=main_w-overlay_w-10:10:enable='between(t,0,20)'" -pix_fmt yuv420p -c:a copy overlayed.mp4 |
| Creating a Picture-in-Picture Effects (Between 0-20s @25,25) | ffmpeg -i main.mp4 -i pip.mp4 -filter_complex "[0:v][1:v] overlay=25:25:enable='between(t,0,20)'" -pix_fmt yuv420p -c:a copy output-pip.mp4 |
| Adding a Soundtrack to a Video | ffmpeg -i video.mp4 -i audio.mp3 -c:v copy -c:a aac -map 0:v:0 -map 1:a:0 output-with-audio.mp4 |
| Looping video back and forth (loop 4 times @20fps) | ffmpeg -i input.mp4 -filter_complex "[0]reverse[r];[0][r]concat,loop=4:250,setpts=N/20/TB" back-forth.mp4 |
Concatenating videos by applying a filter and a concat file
This section covers concatenating videos by providing ffmpeg a file in a given
syntax and by applying the concat filter.
This approach could be useful if you want to concat multiple videos by a given section specific to each video.
Example:
# Comment
file './input1.mkv'
file './input2.mkv'
inpoint 00:10
file './input3.mkv'
outpoint 00:20
file './input4.mkv'
inpoint 00:10
outpoint 00:20
ffmpeg -f concat -safe 0 -i concat.txt -c copy -loglevel warning -stats concat.mkv