Here are some features of Subtitld you can use
Opening various common subtitle and video file formats are supported.
Adjust the start, duration and end of a subtitle directly in the timeline.
Subtitle saves your project in SRT format by default.
All information you need. No more, no less.
Merge to the last or next subtitle, or slice in the middle at the text cursor position.
Add a subtitle with an editable duration or remove the selected subtitle.
Set the start or end of the subtitle to the current timeline cursor.
Up to 20 levels of zoom, so you can make fine editings.
You can show the grid to help visualize by frames, seconds or scenes.
While dragging subtitles, it can snap the starts/ends, moving and to the grid.
Play from the start of the last/current subtitle, stop, play at current timeline cursor position, and from the start of the next subtitle.
Timecode information always visible, and seconds marking in the timeline.
Select subtitles from a numbered list.
Open a recent file from a list of recent used files.
You can undo mistakes with no limits.
Change the timing of all subtitles.
Frame-accurate editing of timing.
Default keyboard shortcuts to accelerate workflow.
Useful for transcribe: adjust the playback speed without changing the pitch.
Useful for transcribe: set the duration and times to repeat while playing.
Visual aid for safety margins.
Choose other formats to save by default.
Import from TXT files, slice them and insert into the timeline automatically. Also, it can export the subtitles as simple TXT files.
Generate videos with the subtitle burned in.
Configure custom keyboard shortcuts
Automatically transcribe subtitles