Caption Format Converter

Free tool that converts SRT or SBV to various caption formats

The caption format converter lets you convert from SRT (SubRip subtitle) or from SBV (YouTube) to Flash DFXP, SMI or SAMI (Windows Media), SCC, CPT.XML (Flash Captionate XML), QT (Quicktime), and STL (Spruce Subtitle File).


Paste your SRT or SBV file and select which closed caption output format you need. Your caption file will be emailed to you as an attachment that preserves the integrity of the formatting.

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Caption and Subtitle Formats Explained

  • CAP – This is a common subtitle/caption file format for broadcast media. It was developed by Cheetah International.
  • CPT.XML – XML format used for encoding captions into Flash video. It originated in the caption-embedding software Captionate.
  • DFXP – This is a common format used for captioning Flash video. It’s a timed-text format that was developed by W3C and stands for “Distribution Format Exchange Profile”.
  • EBU.STL – This is a common subtitle/caption file format for PAL broadcast media. It was developed by the European Broadcast Union.
  • QT – Caption format used for QuickTime video or audio. It was developed by Apple.
  • RT – RealText captions for RealMedia video or audio.
  • SAMI (SMI) – Used for Windows Media video or audio. It was developed by Microsoft and stands for “Synchronized Accessible Media Interchange.”
  • SBV – This is a YouTube caption file format that stands for “SubViewer.” It’s what you get when you download captions from YouTube. It’s a text format that is very similar to SRT.
  • SCC – Popular standard used for Line 21 broadcast closed captions, web media, DVD, as well as iTunes, iPods, iPads, and iPhones. It was originally developed by Sonic and stands for “Scenarist Closed Caption.”
  • SRT – This is the most common subtitle/caption file format. It is a text format that originated in the DVD-ripping software SubRip and stands for “SubRip Subtitle” file.
  • STL – Used for DVD Studio Pro. It was developed by Spruce Technologies and known as “Spruce Subtitle File.”

Need to Convert Other Caption / Subtitle Formats?

Our caption import tool lets you convert to more than 50 caption/subtitle formats. You can even change the frame rate and starting timecode.

  • ADBE – Adobe
  • Apple XML – Apple XML Interchange Format
  • AAF – Avid
  • Avid DS – Avid
  • CCA – MacCaption
  • ASC – Cheetah International
  • ONL – CPC 715
  • Crackle TT – Crackle Timed Text (variant of SMPTE-TT)
  • DECE CFF – Variant of SMPTE-TT with auxiliary PNG files
  • Evertz ProCAP
  • ITT – iTunes Timed Text
  • Matrox4VANC – Matrox for MX02
  • MCC – MacCaption
  • MCC V2 – MacCaption
  • Multiplexed SCC – Multiple CC
  • Rhozet – XML file
  • RT – RealText captions for RealMedia
  • SonyPictures TT – Sony Pictures Timed Text XML
  • TIDLP Cinema – Texas Instruments DLP Cinema XML
  • WMP.TXT – Windows Media
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