It's a beautiful effect if your timelapse includes nature and it does a great job of reducing any unexpected flickering effects. Now add a further instance of the 'Resample FPS' filter exactly as. Assuming the source video is 50 fps, add the 'Resample FPS' filter reducing the fps to 25 (PAL) (avoid custom settings as they introduce jitter), then add 'Change FPS' filter 25 (PAL) to 50 (PAL). After all was said and done, I ended up with 400 images depicting clouds moving. First of all, disable all audio tracks (you cant speed up them in Avidemux). though it will substantially increase the processing time required to create the video. Making a time-lapse on the command line using FFmpeg and ImageMagick. And here’s the FFmpeg command to assemble all those renamed frame jpgs into an actual mp4, H.264-encoded video (very much like timelapsify. Your setpts might have created an output video that will try to play at 3840 frames per second (your original 60 fps times 64)Īnd if you want to add "motion blur" by blending all 64 of those frames into 1 frame, you can do this: ffmpeg -i in.mkv -filter_complex "tblend=average,framestep=2,tblend=average,framestep=2,tblend=average,framestep=2,tblend=average,framestep=2,tblend=average,framestep=2,tblend=average,framestep=2,setpts=1/64*PTS" -f matroska -c:v libx265 -an -b:v 2048k out.mkv Right now, I am trimming individual videos using the following command: ffmpeg. This operation needs to be performed for all these videos. It’s a sticky tab on the right side of the program, but if you don’t see it, use a right mouse button to click on the video and choose Properties from the menu. This will give approximately one frame per second requiring other. Now, click on the video (or its separated fragment) you want to speed up and proceed to the Properties window. I need to trim 2-4 videos and then concatenate them into one single file. Increase the speed of the video 3000 and render it at a normal frame rate around 30 fps. We speed it up 35 times which you can easily change in the command. The above will process quite fast and make sure you notice the -r 60 Each video occupies 2-3 GB minimum and is at least 1 hour long. Here, we speed up the video to make the timelapse. You can use hardware acceleration from advanced features for faster encoding. I agree with Anton1699 but you can also do ffmpeg -i in.mkv -filter:v "setpts=1/64*PTS" -r 60 -f matroska -c:v libx265 -an -b:v 2048k out.mkv Allows you to convert video or picture file(s) to H.264 (libx264).
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