Cut, trim, concatenate, and split video files - basic video editing operations
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Basic video editing operations: cutting, trimming, concatenating, and splitting videos.
# Cut from 10s to 30s (using -ss and -to)
ffmpeg -ss 00:00:10 -to 00:00:30 -i input.mp4 -c copy output.mp4
# Cut from 10s for 20 seconds duration
ffmpeg -ss 00:00:10 -t 20 -i input.mp4 -c copy output.mp4
# First 60 seconds
ffmpeg -t 60 -i input.mp4 -c copy output.mp4
# Last 30 seconds (need duration first)
ffmpeg -sseof -30 -i input.mp4 -c copy output.mp4
# With re-encoding (more precise)
ffmpeg -ss 00:00:10 -i input.mp4 -t 20 -c:v libx264 -c:a aac output.mp4
# Keyframe-accurate (faster, may be less precise)
ffmpeg -ss 00:00:10 -i input.mp4 -t 20 -c copy output.mp4
# Create list.txt file:
# file 'video1.mp4'
# file 'video2.mp4'
# file 'video3.mp4'
ffmpeg -f concat -safe 0 -i list.txt -c copy output.mp4
# If all videos have same codec/format
ffmpeg -i "concat:video1.mp4|video2.mp4|video3.mp4" -c copy output.mp4
# Re-encode for compatibility
ffmpeg -f concat -safe 0 -i list.txt -c:v libx264 -c:a aac output.mp4
# Split into 60-second segments
ffmpeg -i input.mp4 -c copy -f segment -segment_time 60 \
-reset_timestamps 1 output_%03d.mp4
# Split at specific timestamps
ffmpeg -i input.mp4 -ss 00:00:00 -t 00:01:00 -c copy part1.mp4
ffmpeg -i input.mp4 -ss 00:01:00 -t 00:01:00 -c copy part2.mp4
# When you need to change quality/codec
ffmpeg -ss 00:00:10 -i input.mp4 -t 20 \
-c:v libx264 -crf 23 -c:a aac -b:a 192k output.mp4
# Extract multiple segments
ffmpeg -i input.mp4 \
-ss 00:00:10 -t 00:00:05 -c copy segment1.mp4 \
-ss 00:01:00 -t 00:00:10 -c copy segment2.mp4
-c copy for speed (no re-encoding)-ss before -i is faster but less precise-ss after -i is more precise but slower-c copyNo reviews yet. Tell others what you thought.
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