Avanti GUI is a free front-end for FFmpeg with the option to
insert Avisynth as pre-processor.
It can be used with almost all Windows OS builds of FFmpeg. It offers user
friendly control over all basic and advanced FFmpeg options.
A number of template examples are included. There's no need to be familiar with
Avisynth to use the predefined Avanti/Avisynth pre-processor options.
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