Influx

Support for Adobe Audition 2019 (v12) onwards until 2022 included, as always same features on both Windows and macOS and Apple silicon support. Influx adds support for audio and video of FLAC (.FLAC, .AVI), Vorbis (.WebM), FFV1 (.AVI, .MOV, .MKV), H.265 / HEVC (.MKV, .MOV, .MP4), VP8 / VP9 (.MKV, .WebM), AV1 (.WebM .MP4), .FLV, .BIK Bink V1, Opus (.WebA .WebM).

To use new formats in Audition with Influx, you might need to suffix your files with .influx (changing the extension) so that they're correctly imported with Influx, as Audition has issues with third party importers. This is also why the "Use Influx instead of default importers" setting doesn't work for all formats in Audition, whereas it works fine in Premiere Pro, Media Encoder and After Effects.