Convert between video containers 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: ffmpeg -i infile.mov -acodec copy -vcodec copy outfile.mp4 In the following I will explain everything in a little more detail....

January 24, 2021 · 5 min · 992 words · ARJ

New run of Music Moves

I am happy to announce a new run (the 6th) of our free online course Music Moves: Why Does Music Make You Move?. Here is a 1-minute welcome video: The course starts on Monday (25 January 2021) and will run for six weeks. In the course, you will learn about the psychology of music and movement, and how researchers study music-related movements, with this free online course. We developed the course 5 years ago, but the content is still valid....

January 22, 2021 · 1 min · 154 words · ARJ

How to work with plug-in-power microphones

I have never thought about how so-called plug-in-power microphones actually work. Over the years, I have used several of them for various applications, including small lavalier microphones for cameras and mobile phones. The nice thing about plug-and-play devices is that they are, well, plug and play. The challenge, however, is when they don’t work. Then it is time to figure out what is going on. This is the story of how I managed to use a Røde SmartLav+ lavalier microphone with a Zoom Q8 recorder....

January 7, 2021 · 10 min · 1918 words · ARJ

Create timelapse video from images 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 a way to create a timelapse video from the photos easily. Here is an FFmpeg one-liner that does the job:...

January 2, 2021 · 1 min · 127 words · ARJ

New paper: Who Moves to Music? Empathic Concern Predicts Spontaneous Movement Responses to Rhythm and Music

A few days after Agata Zelechowska defended her PhD dissertation, we got the news that her last paper was finally published in Music & Science. It is titled Who Moves to Music? Empathic Concern Predicts Spontaneous Movement Responses to Rhythm and Music and was co-authored by Victor Gonzalez Sanchez, Bruno Laeng, Jonna Vuoskoski, and myself. The paper is based on Agata’s headphones-speakers experiment. We have previously published a paper showing that people move more when listening on headphones....

December 23, 2020 · 2 min · 350 words · ARJ

Running a hybrid disputation on Zoom

Yesterday, I wrote about Agata Zelechowska’s disputation. We decided to run it as a hybrid production, even though there was no audience present. It would, of course, have been easier to run it as an online-only event. However, we expect that hybrid is the new “normal” for such events, and therefore thought that it would be good to get started exploring the hybrid format right away. In this blog post, I will write up some of our experiences....

December 12, 2020 · 6 min · 1220 words · ARJ

PhD disputation of Agata Zelechowska

I am happy to announce that Agata Zelechowska yesterday successfully defended her PhD dissertation during a public disputation. The dissertation is titled Irresistible Movement: The Role of Musical Sound, Individual Differences and Listening Context in Movement Responses to Music and has been carried out as part of my MICRO project at RITMO. The dissertation is composed of five papers and an extended introduction. The abstract reads: This dissertation examines the phenomenon of spontaneous movement responses to music....

December 11, 2020 · 2 min · 372 words · ARJ
Open Science puzzle pieces

Opportunities and Challenges with Citizen Science

Citizen Science is on everyone’s lips these days, at least on the lips of people working in research administration, funding agencies and in institutional leadership. As a member of the EUA Expert Group on Open Science/Science 2.0, I am also involved in ongoing discussions on the topic. Yesterday, I took part in the workshop Citizen Science in an institutional context organized by EUA and OpenAire. A recording of my talk is available here:...

December 10, 2020 · 6 min · 1235 words · ARJ

Music thumbnailing

A couple of days ago, I read an interesting paper about a new AI algorithm that can summarize long texts. This is an attempt to solve the problem of tl;dr texts, meaning “too long, didn’t read”. The article reminded me that the same problem exists for music, in which case it would probably be tl;dl: “too long, didn’t listen”. I was interested in this topic back when I wrote my master’s thesis about short-term music recognition....

December 6, 2020 · 3 min · 581 words · ARJ

Meeting New Challenges

Life is always full of challenges, but those challenges are also what drives personal development. I am constantly reminded about that when I see this picture, which was made by my mother Grete Refsum when I started in school. I think the symbolism in the image is great. The eager child is waiting with open arms for an enormous ball. Even though I am much older now, I think the feeling of starting on something new is always the same....

December 2, 2020 · 1 min · 159 words · ARJ