The spoken dialogue is transcribed in the original language. Timing marks (time‑codes) are added to sync the text with the video.
As Vietnam tightened its internet censorship laws regarding explicit content, finding raw Western videos became harder. However, are much harder for automated filters to detect. A video file labeled "Eva_Elfie_Interview_Vietsub.srt" (subtitle file) could slip through where a video file could not. This technical loophole made "Vietsub" a necessary tool for access, not just convenience. eva elfie vietsub