Music researcher. Research musician. RITMO. University of Oslo. NIME. NordicSMC. Open Research. Father. He/him.
When working with various types of video analysis, I often end up with video files without audio. So I need to add the audio track by copying either from the source video file or from a separate audio file. There are many ways of doing this. Many people would probably reach for a video editor, … Continue reading Combining audio and video files with FFmpeg
In my ever-growing collection of smart FFmpeg tricks, here is a way of converting from one container format to another. Here I will convert from a QuickTime (.mov) file to a standard MPEG-4 (.mp4), but the recipe should work between other formats too. If you came here to just see the solution, here you go: … Continue reading Convert between video containers with FFmpeg
I take a lot of timelapse shots with a GoPro camera. Usually, I do this with the camera’s photo setting instead of the video setting. That is because I find it easier to delete unwanted pictures from the series that way. It also simplifies selecting individual photos when I want that. But then I need … Continue reading Create timelapse video from images with FFmpeg
FFmpeg is a fantastic resource for doing all sorts of video manipulations from the terminal. However, it has a lot of features, and it is not always easy to understand what they all mean. I was interested in understanding more about how the tblend function works. This is a function that blends successive frames in … Continue reading Visual effect of the different tblend functions in FFmpeg
Continuing my explorations of FFmpeg for video visualization, today I came across this very nice blog post on creating “pixel array” images of videos. Here the idea is to reduce every single frame into only one pixel, and to plot this next to each other on a line. Of course, I wanted to try this … Continue reading Pixel array images of long videos in FFmpeg
