Here, we speed up the video to make the 'timelapse'. Speed up the video ffmpeg -i timestamp_clock.mp4 -an -vf 'setpts=PTS/35' speedup_timestamp.mp4 In the first step we take our input movie input.mov and add at bottom center a black box with white timestamp This would result into a more complex command with a complex ffmpeg filter usage ffmpeg -i input.mp4 -filter_complex 'setpts=0.5*PTS atempo=2.0' -map '' -map '' output.Ffmpeg - GIF timelapse with timestamp clockĪdd timestamp clock to video ffmpeg -i input.mov -vf 'drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf:expansion=normal: text='%': fontcolor=white:fontsize=48: x=(w-text_w)/2: y=h-th-10: box=1: boxcolor=black: boxborderw=5: line_spacing=32' -vcodec libx264 -vb 2600k -strict -2 -preset slower -f mp4 -an timestamp_clock.mp4 You may have the requirement to time lapse the video and the audio by 2x factor. Time lapse your video and audio channel by 2x factor This tells ffmpeg to run the video filter twice, which results into a 0.25*PTS value, which itself is a quarter of the input video length or a speed up of the video by 4x factor.

In this command you see the both setpts=0.5PTS separated by a comma. Which would result into following command: ffmpeg -i input.mp4 -filter:v 'setpts=0.5*PTS,setpts=0.5*PTS' -an output.mp4 To do a 4x timelapse would require you to run the filter twice. So your setpts can only be inbetween 0.5 to 2. Tell the ffmpeg to remove the audio channel, and thus resulting in a silent movieįfmpeg time lapse video with bigger factor as 2xĭue to internal limitations you can only work in the double or half range. Tells the ffmpeg video filter to use the half amount of the presentation timestamps, resulting in a half length video and thus into a doubled speed of playback of the resulting video ffmpeg -i input.mp4 -filter:v 'setpts=0.5*PTS' -an output.mp4 Also the following command is removing your audio channel. To halfen the playback time and therefore to double the lime lapse speed the following command will help you. Time lapse your video by 2x factor to a still video with ffmpeg This is typically done by dropping frames during the playback to reduce the amount of time.įfmpeg is using exactly this feature to make your video a time lapse video. For this we need to speed up the video playback. Sometimes you want to have a video playback shortend to reduce the time a view needs to see the full length of the video.

Ffmpeg speed up video time lapse