![]() ![]() Remember that the ‘Preview’ panel is not to be considered a real-time playback monitor when you have many clips, tracks and filters. (Search the forum for the methods other’s have described) Assumptions: - ffmpeg is installed (brew install ffmpeg on macOS). Concatenate (join together) all the clips into one final sped up clip. Trim off the first x frames of each of the copied/sped up clips. Shotcut doesn’t have this feature, but you can easily create this idea manually. Copy across and speed up video clips from an input dir to an output dir. The way many pro NLE’s handle it is to create a proxy file, which is an optimized version of the media for edit reasons but the original file is used when encoding the finished product. Using the computer to process the video information has a broad application prospect in many areas. You can also add filters if you want to change the output video, on Video > Filters. To set the frame rate, go to Video menu > Frame rate. VirtualDub will then load all of the images. Then just go to File > Open, and pick the first image. Your setpts might have created an output video that will try to play at 3840 frames per second (your original 60 fps times 64) And if. To create a timelapse, you need all of your photos numbered in order, without any gaps in the sequence. The above will process quite fast and make sure you notice the. If you have a video of any length to which you have applied several filters then you can expect a review lag as the program has to apply those filters to each frame in ‘real time’… That’s serious work for the CPU even at 24 frames each second, worse still when you have higher frame rate and/or have also changed the speed. ffmpeg -i in.mkv -filter:v 'setpts1/64PTS' -r 60 -f matroska -c:v libx265 -an -b:v 2048k out.mkv. ffmpeg -i video.avi -r 60 -filter:v 'setpts0.0625PTS' -vcodec libx264 -an timelapse. To double the speed of the video: ffmpeg -i input.mp4 -filter:v 'setpts0.5PTS' output.mp4. I had a H264 video from a camera and after lots of attempts found following command that produce 16x faster video with good result and 60 FPS (option -r) that is good for the YouTube timelapse. jpg -c:v libx264 -r 30 -pixfmt yuv420p out.mp4 The first pass, with one frame per second, wasn’t quite what I was looking for. You can speed up (or slow down a video) by using the setpts filter. And the whole time I had to deal with hardcore input lag and just a slow program in general, which has gotten slower the more that I’ve used it and worse on my newer computer which is superior in every way. ffmpeg -framerate 1 -patterntype glob -i. ![]()
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