This library is an ffmpeg extension that makes it easy to use gl-transitions in ffmpeg filter graphs. Its extremely simple spec makes it really easy to customize existing transitions or write your own as opposed to struggling with complex ffmpeg filter graphs. GL Transitions, on the other hand, is a great open source initiative spearheaded by Gaëtan Renaudeau that is aimed at using GLSL to establish a universal collection of transitions. FFmpeg filter graphs are extremely powerful, but for implementing transitions, they are just too complicated and error-prone. Here are some convoluted examples of a simple cross-fade between two videos. IntroįFmpeg is the defacto standard in command-line video editing, but it is really difficult to concatenate videos together using non-trivial transitions. If you want an easier solution, I recommend checking out ffmpeg-concat, an npm module and CLI that allows you to concat a list of videos together using a standard build of ffmpeg along with the same sexy OpenGL transitions. 5.2.FFmpeg filter for applying GLSL transitions between video streams ( gl-transitions). Users can skip – map and let ffmpeg handle stream selection. It also sets the number of output audio streams.įinally, the -map flag in step 5 allows for a custom stream selection in each output file if there are multiple. Similarly, a (default is 0) sets the number of audio streams in each section. Next, we follow with v (default is 1), which sets the number of output video streams. In step 4, the number of files we want to join is in the value of n (default is 2). Map the resulting audio and video streams to the output.Select the actual streams in a specific order: video and audio from the first, second, and third file.Use -filter_complex to select streams from the input files.
Here’s a quick rundown of what’s going on in the command: To explain the contact filter, we’ll use start.mkv, body.mkv, and rear.mkv with a single audio stream: $ ffmpeg -i start.mkv -i body.mkv -i rear.mkv -filter_complex \
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