How to modify subtitle timeline with Aegisub

Question: How to modify the subtitle timeline in Aegisub software? Aegisub is a powerful subtitle editing software that can help users easily modify and adjust the timeline of subtitles. If you need to add or modify subtitles to a video, it's crucial to know how to operate the timeline in Aegisub. In this tutorial, PHP editor Xigua will bring you a step-by-step guide to help you master the skills of modifying the subtitle timeline. We'll walk you through the entire process, starting with setting up the timeline to adjusting the start and end times of your subtitles. By reading the details below, you will be able to use Aegisub proficiently to ensure that subtitles are perfectly synchronized with the video.

Open Aegisub, click File → Open Subtitles to open the subtitle file, or directly pull the subtitle file into it.

Pull the video in at the same time to modify it more accurately.

Select the subtitles you want to adjust, and then click the adjustment icon on the toolbar. (If you need overall adjustment, you can not select it, or you can use Ctrl+A to select all)

The adjustment window will pop up later. The format of time in panning mode is h:mm:ss:cs, also It is hours: minutes: seconds: milliseconds. For example, adjusting one second is as shown in the figure, 0:00:01:00.

If the subtitles are too fast, choose the delay below. Otherwise, if the subtitles are too slow, choose the corresponding advance.

Continue to look at the application, which subtitles are applied to, generally use "selected rows" and "all rows". As mentioned above, if it is an overall adjustment, you do not need to select it, because you can choose to apply it to all rows here.

But it is recommended to select all subtitle lines and then use "Selected Lines" here.

Then there is the time. The default selection is "Start and End Time", which is to adjust the start time and end time of the subtitle line, delay or advance the main line.

P.S. If you have just finished speaking and the subtitles are still displayed and you need to shorten its duration, select "End Time Only" to move the end time of the selected subtitle line forward. On the contrary, the duration can be extended.

The same principle applies to "Start Time Only", what is modified is the start time of the subtitle line.

After setting the parameters, click OK.

The picture below shows before and after the modification.

You can see that the time of the selected row has been delayed by one second.

Then Ctrl+S to save the file.

The subtitle timeline adjustment is completed.

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