Concatenate video files
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HowTo
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Video
Last update
2023-12-11
2023
12-11
«ffmpeg, mplayer/mencoder
join video files»

Use either of these commands to concatenate video files with the same codec and dimensions:

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# mencoder
mencoder -oac copy -ovc copy -idx -o out.avi in*.avi

# ffmpeg
ls in*.avi | sed 's/.*/file \0/' | ffmpeg -f concat -c copy -i - out.avi

Check video resolutions:

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for i in *.mp4; do
  echo -en "$i\t"
  ffprobe -v error -select_streams v:0 \
   -show_entries stream=width,height \
   -of csv=s=x:p=0 "$i"
done

To concatenate video files with different codecs and/or dimensions you have to reencode all files choosing common codecs/dimensions:

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mencoder -oac mp3lame -ovc x264 -idx -vf expand=640:640 -o out.avi in*.avi

Source: FFmpeg / ffmpeg@stackoverflow, Mencoder