ffmpeg command line examples

1. Extract audio from a mp4 file

$ffmpeg -i umac_cctv_360.mp4 -vn -acodec copy audio.mp4

2. Merge video and audio into a mp4 file

$ffmpeg -i umac_cctv_480.mp4 -i audio.mp4 -strict -2 -acodec copy -vcodec copy umac_cctv.mp4

3. Get clips from a mp4 file

$ffmpeg -i cctv_20141220_480.mp4 -ss 00:25:15.46 -c copy -t 00:05:01.2 output.mp4

4. Convert mp4 video frames to image

$ffmpeg -i umac_cctv_480.mp4 umac_cctv_%04d.jpg

$ffmpeg -i umac_cctv_480.mp4 umac_cctv_%04d.png

5. Concatenate ts files into one ts file

$ls -v *.ts | xargs cat > output.ts