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Here is a quick example on how you can use FFmpeg to slow down a video. Slowed down video by 50%: -vf setpts=2*PTS will slow down the video twice it’s original speed. -filter:a atempo=0.5 slows down the audio to 50%. Unfortunately, the caveat here is that the tempo must be in the range of 0.5 to 2.0. Also, you do not get that slow-motion down pitched sound as many slow-motion videos have. Sources: Speeding up/slowing down video

In FFmpeg merging files together is called concatenation. The video files have to have the same codec. Different file containers are allowed though. For the concatenation to work we need to make a list of every file we want to…

If the video has no audio: If the video already has audio: When you start to manipulate stuff like this you should try to get a basic grasp of FFmpeg streams. The example above is very basic so no need to dig deeper, but if you are editing a video with multiple audio tracks, for example, you should be a little careful. Here is one example if you want to know more.

FFmpeg is able to cut, trim and extract videos without transcoding the media. This is a great way to maintain the original quality, thus avoiding generation loss. However, FFmpeg cannot cut at exact points in time unless it re-encodes the…

Straight to the point this time. Let’s say we want to resize an 8K video to 4K or perhaps a 4k video to HD. To downscale while keeping the aspect ratio use: To set the resolution regardless of aspect ratio…