Difference between revisions of "Ffmpeg"
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| − | + | == Crop video == | |
| + | * <code>ffmpeg -i input.mp4 -filter:v "crop=w:h:x:y" output.mp4</code> | ||
| − | + | == Extract audio == | |
| − | + | * <code>ffmpeg -i input.mp4 -ac 1 -q:a 5 output.mp3</code> | |
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| − | </ | ||
| + | == Fast Rotate Video == | ||
| + | * <code>ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate=270 output.mp4</code> | ||
| + | |||
| + | == Mosaic Videos == | ||
| + | * <code>ffmpeg -i input01.mp4 -i input02.mp4 -i input03.mp4 -filter_complex vstack=3 out.mp4</code> | ||
| + | * <code>ffmpeg -f concat -i mylist.txt -c copy output.mp4</code> - create file list to do simple linear concat | ||
| + | |||
| + | == My Home Video Conversion Pipeline example== | ||
| + | |||
| + | # <code> ffmpeg -ss 1:23:40 -to 1:26:05 -i Coletta-Tape03.avi -vf yadif -crf 12 temp1.mp4 </code> | ||
| + | # <code> python3 -m vidstab -i temp1.mp4 -o temp1_stab.mp4 </code> - also set num frames for stability using -s 10 and drop edges using -z 10 | ||
| + | # <code> ffmpeg -i temp1_stab.mp4 -vf "setpts=N/29.97/TB,fps=29.97" -r 29.97 -crf 12 temp1_stab_30fps.mp4 </code> | ||
| + | # <code> ffmpeg -i temp1_stab_30fps.mp4 -i 1992_Gaeta_Christmas_Eve.mp4 -shortest -c:v copy -map 0:v:0 -map 1:a:0 FINAL.mp4 </code> | ||
| + | |||
| + | == Pull in images as frames Example == | ||
| + | * <code> ffmpeg -i ./%04d.png -c:v libx264 -vf "format=yuv420p" -crf 12 output.mp4 </code> | ||
==H.264 encoding== | ==H.264 encoding== | ||
| − | * | + | * <code> ffmpeg -i VID_20160918_113318088.mp4 -vprofile high -codec:v libx264 -preset slow -b:v 2500k -maxrate 2500k -bufsize 5000k -vf scale=-2:720 -threads 0 -codec:a aac -b:a 128k ../HD_size/VID_20160918_113318088_720.mp4</code> |
| − | < | + | ** Set resolution and bitrate all at the same time |
| − | * < | + | * <code> ffmpeg -r 1 -i img%01d.png -vcodec mpeg4 -y movie.mp4</code> |
** fps is defined with the "-r" bit - so "-r 1" would be 1 fps, "-r 30" would be 30, etc. | ** fps is defined with the "-r" bit - so "-r 1" would be 1 fps, "-r 30" would be 30, etc. | ||
Latest revision as of 19:08, 8 March 2024
Contents
Crop video
ffmpeg -i input.mp4 -filter:v "crop=w:h:x:y" output.mp4
Extract audio
ffmpeg -i input.mp4 -ac 1 -q:a 5 output.mp3
Fast Rotate Video
ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate=270 output.mp4
Mosaic Videos
ffmpeg -i input01.mp4 -i input02.mp4 -i input03.mp4 -filter_complex vstack=3 out.mp4ffmpeg -f concat -i mylist.txt -c copy output.mp4- create file list to do simple linear concat
My Home Video Conversion Pipeline example
ffmpeg -ss 1:23:40 -to 1:26:05 -i Coletta-Tape03.avi -vf yadif -crf 12 temp1.mp4python3 -m vidstab -i temp1.mp4 -o temp1_stab.mp4- also set num frames for stability using -s 10 and drop edges using -z 10ffmpeg -i temp1_stab.mp4 -vf "setpts=N/29.97/TB,fps=29.97" -r 29.97 -crf 12 temp1_stab_30fps.mp4ffmpeg -i temp1_stab_30fps.mp4 -i 1992_Gaeta_Christmas_Eve.mp4 -shortest -c:v copy -map 0:v:0 -map 1:a:0 FINAL.mp4
Pull in images as frames Example
ffmpeg -i ./%04d.png -c:v libx264 -vf "format=yuv420p" -crf 12 output.mp4
H.264 encoding
ffmpeg -i VID_20160918_113318088.mp4 -vprofile high -codec:v libx264 -preset slow -b:v 2500k -maxrate 2500k -bufsize 5000k -vf scale=-2:720 -threads 0 -codec:a aac -b:a 128k ../HD_size/VID_20160918_113318088_720.mp4- Set resolution and bitrate all at the same time
ffmpeg -r 1 -i img%01d.png -vcodec mpeg4 -y movie.mp4- fps is defined with the "-r" bit - so "-r 1" would be 1 fps, "-r 30" would be 30, etc.
