Later tasks in part two of this course take the use of ffmpeg much deeper. This is step is to start to alter files using a command line application like ffmpeg. So this seems like a good point in the course to give you the option of taking the next step in working with open video. Unfortunately this tool is for Mac only, and you may find it difficult to install. The video tutorial mentions FFmpegX which is a front end for ffmpeg. ffmpeg is easy to install on a on a Linux computer. There is a really easy way to achieve this using the command line application ffmpeg. If we were going to create a longer example we would want a tool which removed I frames all at once. Introduction to command line tools (optional)Īs you can see from the above example, removing the I frames of a longer video file using Avidemux would be very time consuming. TIP: You may need to resize clips to be able to combine them in Avidemux. Save to a new video file using the follow settings.Remove the Iframes from all your video, by manoeuvring to key frames with the double-arrows, setting in and out points one frame part and deleting the selected I-frame.Remove parts of the video so you have a short clip which cuts between suitable scenes with the right kind of motion.If needed add another clip using File > Append in Avidemux.Luckily, we can achieve a datamosh using only Avidemux (part 3 of the video) as long as we delete all I frames in the clips (apart from the first one). So we were a bit worried you may get stuck. However, FFmpegX is only available for Mac and it is pretty tricky to install. Avidemux and FFmpegX.Īvidemux is available for Mac, Linux and Windows. The how to video is aimed at people using Mac computers. If you are short of time here are two clips for you to use in this exercise. You can use openly licensed video or as you are using clips and sharing for educational use, you can be a more free about the clips you use. The following videos show you how to do datamoshing and gives you the chance to try hands on manipulation of video files. The process of creating a datamosh involves some understanding of processes in video encoding including i-frames, p-frames and the concept of motion tracking. This is normally done for entertainment in videos like music videos. ffmpeg - available for Mac, Linux & Windowsĭatamoshing refers to a particular way of breaking video files so that they look strange.Avidemux - available for Mac, Linux & Windows.Start to alter video encoding parameters using advanced tools.Understand how I frames and P frames are used for video compression.We aim to do this by entering the slightly crazy world of Datamoshing.īy the end of this task you should be able to: This chapter aims to take a humorous and unusual approach to explain some fundamentals of how video encoding works.
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