Web video players read WebVTT, not SRT. Filemorph converts a subtitle file from SRT to VTT on your iPhone, ready to attach to a web player.
SRT is the subtitle format most editing tools export by default, but HTML5 video and most web players expect WebVTT instead. Filemorph reads the SRT file's timestamps and caption text and rewrites them in VTT format, locally on your device.
Filemorph converts SRT's timestamp format and numbering into the header and timing syntax WebVTT expects, while keeping every caption's text and timing intact. The result is a .vtt file ready to reference from a video element's track tag.
In the app: Convert → To VTT.
WebVTT is the caption format HTML5 video and most browser-based players actually read, while SRT is common everywhere else, especially editing software exports. Converting once means the same captions work in both a desktop editor and a website.
Yes. Unlike web converters that upload your files to a server, Filemorph converts every file locally using Apple's frameworks. Nothing leaves your device, and it works with no internet connection. This operation is part of Filemorph Pro ($29.99/year, 7-day free trial on monthly and annual plans).
No. Filemorph carries over every caption's start and end time exactly, only reformatting them into VTT's timestamp syntax.
Yes. Filemorph's VTT to SRT operation converts a WebVTT file back into SRT format.
Yes. The conversion works on the file's text and timing structure, independent of the caption language.
On-device, no upload. Plus 300+ more file operations.
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