Use a subtitle editor (like Subtitle Edit) or ffmpeg with itsoffset.
There are several tools available for converting and editing videos:
ASS supports positioning.
Using FFmpeg:
ffmpeg -i subs.srt -c:s ass subs.ass
Then edit subs.ass manually:
Or use Aegisub to visually position subtitles.
Check your media player’s subtitle settings. Some override embedded positioning. sone443engsub convert015651 min top
convert015651 – Likely refers to conversion at a specific timecode:
min top – Could mean: