TIkTok does have an auto-trim feature, but it is a hidden element in its Sound Sync under Adjust clips tool. Under Sound Sync, TikTok implements an auto-snipping off of all the individual clips in the video to apace the dominant sound added as the unifying background music. To that effect, Sound Sync is as a quick trim tool to escape the effort invested in manual video clipping. However, auto trimming could lead to quality loss, as the portions snipped off could be vital to the video. Hence, it is a tool best to edit collage or video slides that do not carry any relevant weight in the content.