i’d be interested in processing video. vkdt has some support for loading and processing timelapse sequences, including keyframes, since the last release.
i did not succeed in loading your dng, apparently neither rawler nor rawspeed support them. probably possible to add support, but i’m no expert on this.
i’m currently not loading sidecar wav files, though that should not be difficult to do. i do load audio from magic lantern mlv video or regular mp4/compressed video.