The audio is reversed creating and finally the two streams ( + ) will merge and output as a new file, output.mp3: $ ffmpeg -i input.mp3 -filter_complex 'asplit areverse amix=inputs=2' -map '' output.mp3ĭon’t worry if the above code looks intimidating, distinct linear chains are easy once the more you use them and get used to the syntax. The input.mp3,, will split into a temporary stream. Below is an example of a distinct linear chain. Below is an example of a linear chain horizontally flipping a video and then inverting the colors: $ ffmpeg -i input.mp4 -vf 'hflip,negate' output.mp4ĭistinct linear chains use secondary inputs or create temporary streams before creating the final output.

Linear chains are filtering done on the input stream or virtual temporary streams but do not require an additional temporary stream before creating the output file. In this case, we first slow down the video. If you're filtering multiple streams in some sequence, then all filters need to be specified within a single filtercomplex. Linear chains are separated by commas while distinct linear chains are separated by semicolons. ffmpeg -i input.mp4 -i watermark.png -filtercomplex ' 0setptsPTS10,fps24 v v 1overlay10:10' -c:v libx264 -preset ultrafast -crf 26 -c:a copy output.mp4. There are two types of filter chaining in FFMPEG Linear chains and distinct linear chains. It is possible to apply one filter at a time constantly referencing the last output file but ideally, chains are used to efficiently apply multiple filters. As you use FFMPEG one command might get the job done but at times applying multiple filters to a video is needed.

Ffmpeg filter vf