SRT (SubRip Text) is the most widely supported caption format in the world. If you need captions for YouTube, Vimeo, or almost any other platform, SRT is the right format — and Speechpad’s human captionists deliver them at 99% accuracy in 48 hours
Publishing captions alongside your video also makes every spoken word searchable, which helps new viewers find your content through the exact phrases you used.
An SRT file is a plain text file that tells a video player when to show captions and what to display. Each entry has three parts: a sequence number, a timecode range showing when the caption appears and disappears, and the caption text.
It’s the simplest caption format available — which is exactly why it works everywhere. No special software needed to open, read, or upload it.
Timecodes use a comma before milliseconds — for example, 00:01:07,053. Entries are separated by a blank line.
The following video shows an example of what you would get if you ordered Speechpad’s Standard Captions. After you begin playing the video, click the “CC” on the video player to turn the captions on.
Here’s a sample excerpt from a real SRT file. Each numbered block is one caption entry, separated by a blank
line. SRT is just one of many formats you can download once the captions have been created. You could then
use the SRT file to allow various players and video hosting services to present captions with your video
(see compatibility list below).
SRT is supported by virtually every video platform, player, and editing tool. Here are the most common ones Speechpad clients use:
If your platform isn’t listed, SRT almost certainly still works. It’s the default format most video tools look for first.
SubRip/SRT captions are available with either of Speechpad’s captioning services:
Common questions about SRT files, how they work, and how Speechpad’s captioning service handles them
An SRT file (SubRip Text) is a plain text caption file. Each entry contains a sequence number, a start and end timecode, and the caption text. Entries are separated by blank lines. It’s the most universally supported caption format across video platforms and players.
YouTube, Vimeo, Facebook, Wistia, Brightcove, VLC, Windows Media Player, Kaltura, Panopto, Camtasia, Adobe Presenter, Dailymotion, and most other video platforms. If your platform supports captions at all, it almost certainly supports SRT.
Upload your video or audio to Speechpad, select Standard Captions, and choose SRT as your download format. Human captionists handle your file and deliver it within 48 hours, starting at $1.50/min. Create a free account to get started.
Speechpad guarantees 99% accuracy on all caption orders. Every file is handled by a human captionist — not an AI tool. This matters for multi-speaker content, accents, technical terminology, and anything automated tools regularly miss. All work is covered by Speechpad’s satisfaction guarantee.
SRT is the simplest and most widely compatible format. VTT (WebVTT) adds styling options for web use. SCC is used for broadcast TV. TTML is common in streaming. For most distribution needs — YouTube, Vimeo, Wistia, LMS platforms — SRT is the safest default. Speechpad delivers captions in SRT and several other formats.
Speechpad’s Standard Captions in SRT format meet ADA requirements for online video. If you need FCC compliance or SDH (Subtitles for the Deaf and Hard of Hearing) for broadcast, Premium Captions are the right choice.
Yes. Speechpad supports transcription and captioning in 27+ languages and dialects, all handled by native speakers. SRT format is available for foreign language caption orders as well.Sonnet 4.6