This was mostly good enough for studio use, but it was still difficult to set up for users who aren’t that technical, and almost impossible to do on locked down systems like Android or even a school computer. Previously, Krita required users to point to an FFmpeg executable somewhere on their system in order to use many of the features pertaining to video, such as animation video export, video import as animation, and the Recorder Docker for recording your painting sessions. Speaking of the video export option, FFmpeg is a massively important program that manages (among other things) rendering and conversion of audio and video formats. MLT is a proven and flexible framework used by video editing programs like Kdenlive and designed with frame-by-frame synchronization in mind, and should help Krita animators feel confident that their key frames will stay lined up with their voice work or background music, both inside of the program and in their exported animation videos.

In order to fix various audio-visual sync issues when playing animations with attached audio, Emmet and Eoin reworked much of the animation playback to use the MLT framework behind the scenes.

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