You can use any of the supported file formats, by clicking on the Browse button (the one with three dots) on the right.
Subtitle File Source setup
After that you should point to the exact subtitle file you want to imprint in your video clip and click the Ok button within the corresponding dialog.
The very first choice to be made concerns the subtitle file that is going to be encoded and also the corresponding Reference Timecode.
It will provide you with two options to choose from, but first please familiarize yourself with some background concerning the timecode if you need to.
The Time Code, in general, represents the moment in time a subtitle shall appear on or disappear off the screen.
So each individual subtitle is represented by an In Cue - the time it has to appear on the screen, and an Out Cue - the moment it has to disappear off the screen.
Source Timecode is the timecode originally encoded with the video file. The EZTitles Plug-in automatically detects and uses it with the selected subtitle file.
If the original source Timecode cannot be used for some reason (there is a shift between the subtitles file and the embedded TC for example), you shall consider using the second available option Frame Counter.
The Frame Counter automatically generates timecode for each frame according to the sequential number of the video frames in the clip and the already associated with the clip Programme Start TC.
Timecode Format changes the format of the running timecode when Frame Counter is used for Reference Timecode. It is intended to work in a workflow with the video running at 48, 50, 59.94 or 60 fps while the subtitles are prepared for 24, 25, 29.97 of 30 fps. In scenarios like this, adjusting the Timecode Format in the way that it matches the timecode format of the subtitles, will result into perfectly synchronized subtitles.
Please consider changing it to something else rather than the Default for Video only when required. Otherwise it may cause serious issues and the subtitles may appear earlier or later than expected.
Programme Start TC - you can specify the timecode of the very first frame in your clip, for example at 00:00:00:00 as shown in the image. This parameter will be later used to keep the sync between the video clip and the subtitles.
The Drop Frame option shall be set to Yes, only for an NTSC drop-frame video clip. In all other cases you have to click the No indication.