CaptionSync produces a wide variety of output file formats to support captioning for broadcasts, DVDs, videotape, web players, video-sharing sites, and podcasts.
At the end of this article you can find media samples that you can use with these outputs. Please open a Support Ticket to request specific samples of these caption files.
If you're looking for encoded captions/subtitles, where the caption file is embedded into the media file, then please take a look at our Video Encoding tutorial for more information.
Following is a list of the various output file extensions and what they are typically used for:
Extension |
Description |
Transcripts and Support Files |
|
| .CLEAN.TXT | Clean text transcript without any timing information, formatted with blank lines between speaker changes. |
| .CLEAN.PDF | Clean text transcript in the .pdf format, without any timing information, formatted with blank lines between speaker changes. |
| .CLEAN.DOCX | Clean text transcript in the .docx format, without any timing information, formatted with blank lines between speaker changes. |
| .TXT | Raw text transcript without any timing information but may contain sync markers (used for redos). |
| .ID | A simple XML file noting the original AST ID pertaining to the submission (only present for AST-Link submissions which are not Batched) |
Production Transcript Files |
|
| .PROD.TXT | A time-stamped text transcript, with a timestamp at every speaker change and periodically within each speaker’s monolog. NOTE: This format can also be requested as a Captioning output, in which case timestamps will be placed at a fixed frequency of 60 seconds. |
Web Result Types |
|
| .ADB.XML | DFXP timed text for Flash (uses dur syntax). Also used for Panopto Lecture Capture systems. See .DFXP.XML below for DFXP timed text with begin/end syntax. |
| .ASS | Advanced SubStation Alpha format. This caption file is used by a wide variety of software packages -- particularly open-source and freeware packages. Examples include: iSubtitle, Handbrake, DivX, PS3, VLC, and MPlayer. |
| .VTT | WebVTT format for HTML5 video. The syntax for the align: tag is A:middle. |
| .2014.VTT | WebVTT format for HTML5 video. The syntax for the align: tag is align:middle. |
| .noalign.VTT | WebVTT format for HTML5 video. This format does not store alignment information. |
| .SRT | Captions for YouTube, older JW FLV Player or for DVD subtitles longer than 32 characters per line |
| .QT.XML | QuickTime TeXML subtitles. These are like QT.TXT (see below) but have a more modern UTF-8 character set support. |
| .QT.TXT | Text track captions for QuickTime video or audio (.MOV, .MP3, .M4A, .M4V, .MP4, .WAV, …). See QT.XML above for more modern character set support. |
| .QT.SMIL | + SMIL pointer file to tell the QuickTime player how to play the QuickTime text track captions with the QuickTime video or audio |
| .SMI | SAMI captions for Windows Media video or audio (.WMV, .WMA, .ASF, .MP3, .WAV, …). Also used for Camtasia and other systems. |
| .ASX | + ASX pointer file to tell the Windows Media player how to play the SAMI text captions with the Windows Media video or audio |
| .WMP.TXT | Captions for embedding into Windows Media video (.WMV) |
| .RT | RealText captions for RealMedia video or audio (.RM, .RA, .MP3, .WAV, …) |
| .RT.SMIL | + SMIL pointer file to tell the RealPlayer how to play the RealText captions with the RealMedia video or audio |
| .DFXP.XML | DFXP timed text for Flash with begin/end tags. See .ADB.XML above for DFXP timed text with dur syntax. Compliant with the TTML specifications. |
| .SMPTETT.XML | The SMPTE-TT file is the FCC standard for internet captioning. It's derived from the DFXP format, but contains some extra fields to support the broadcast industry. It is also sometimes called TTML, SMPTE-TTML, or SMPTE-2052. This format supports a "708" style captions, being suitable for broadcasters looking for 708 captions or HD captions. It also supports vertical and horizontal positioning, so it is suitable for all FCC requirements. There is an increasing number of applications accepting the SMPTE-TT format, like Adobe Premiere. |
| .LRC | MP3 Lyric file |
| .APRESO.XML | XML captions for Apreso and Echo360 Lecture Capture systems |
| .PPT.XML | Captions for the STAMP plugin for Powerpoint |
| .TEGRITY.TXT | Captions for Tegrity Lecture Capture systems (prior to the Summer 2013 release) |
| .BC.XML | DFXP captions for Brightcove Video |
| .ENSEMBLE.XML | DFXP captions for Ensemble Video |
| .CUE.XML | Adobe Cuepoint file |
| .GPAC.TTXT | Caption file format used by mp4box |
| .CPT.XML | XML captions for Captionate to encode into Flash video |
| .QTWRD.TXT | QuickTime word level text track captions for QuickTime video or audio (.MOV, .MP3, .M4A, .M4V, .MP4, .WAV, …). Words highlighted as spoken. |
| .QTWRD.SMIL | + SMIL pointer file to tell the QuickTime player how to play the QuickTime word level text track captions with the QuickTime video or audio |
| .QTWRDRVL.TXT | QuickTime word level text track captions for QuickTime video or audio (.MOV, .MP3, .M4A, .M4V, .MP4, .WAV, …). Words revealed as spoken. |
| .QTWRDRVL.SMIL | + SMIL pointer file to tell the QuickTime player how to play the QuickTime word level text track captions with the QuickTime video or audio |
| .KAR.TXT | QuickTime karaoke captions for QuickTime video or audio (.MOV, .MP3, .M4A, .M4V, .MP4, .WAV, …) |
| .KAR.SMIL | + SMIL pointer file to tell the QuickTime player how to play the QuickTime karaoke captions with the QuickTime video or audio |
Broadcast Result Types |
|
| .CAP | Cheetah binary captions |
| .ASC | Cheetah text captions |
| .XMS | Rapidtext captions |
| .SCC | 29.97 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, DVD Studio Pro, Encore, and others (Important for DVD Studio Pro that the timecode of captions match the timecode of the MPEG video). Also used to caption content for iTunes, iPods, and iPhones. |
| .NDF.SCC | + 29.97 fps Non-drop-frame timecode version of DVD captions for Sonic Scenarist, DVD Studio Pro, Encore, and others (Important for DVD Studio Pro that the timecode of captions match the timecode of the MPEG video). |
| .24P.SCC | 23.976 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, DVD Studio Pro, Encore, and others (Important for DVD Studio Pro that the timecode of captions match the timecode of the MPEG video). Also used to caption content for iTunes, iPods, and iPhones. |
| .24.SCC | 24 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, DVD Studio Pro, Encore, and others (Important for DVD Studio Pro that the timecode of captions match the timecode of the MPEG video). Also used to caption content for iTunes, iPods, and iPhones. |
| .25.SCC | 25 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, DVD Studio Pro, Encore, and others (Important for DVD Studio Pro that the timecode of captions match the timecode of the MPEG video). Also used to caption content for iTunes, iPods, and iPhones. Also called PAL output in Europe. |
| .60P.SCC | 59.94 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, DVD Studio Pro, Encore, and others (Important for DVD Studio Pro that the timecode of captions match the timecode of the MPEG video). Also used to caption content for iTunes, iPods, and iPhones. |
| .SRT | Subtitles for SubRip |
| .STL | Drop-frame timecode version of DVD subtitles for DVD Studio Pro (Important that the timecode of subtitles match the timecode of the MPEG video) |
| .NDF.STL | + Non-drop-frame timecode version of DVD subtitles for DVD Studio Pro (Important that the timecode of subtitles match the timecode of the MPEG video) |
| .ADB.TXT | Drop-frame timecode version of DVD subtitles for Encore |
| .ADB.NDF.TXT | + Non-drop-frame timecode version of DVD subtitles for Encore |
| .24P.ADB.TXT | 23.976 fps Drop-frame timecode version of DVD subtitles for Encore |
| .24.ADB.TXT | 24 fps Drop-frame timecode version of DVD subtitles for Encore |
| .25.ADB.TXT | 25 fps Drop-frame timecode version of DVD subtitles for Encore. Also called PAL output in Europe. |
| .60P.ADB.TXT | 59.94 fps Drop-frame timecode version of DVD subtitles for Encore |
| .DVDIT.TXT | Subtitles for Sonic DVDit |
| .SONIC.SUB | Subtitles for Sony DVD Architect and for Sonic DVD Creator |
| .AVIDDS.TXT | Drop-frame timecode version of subtitles for the Avid DS system |
| .AVIDDS.NDF.TXT | + Non-drop-frame timecode version of subtitles for the Avid DS system |
| .AVIDDVD.TXT | Subtitles for Avid DVD by Sonic |
| .MICRODVD.SUB | Subtitles for MicroDVD; used by many programs to format subtitles, including mplayer |
| .PAL.STL | PAL 25 fps timecode version of DVD subtitles for DVD Studio Pro (Important that the timecode of subtitles match the timecode of the MPEG video) |
| .PC.SCC | 29.97 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, Adobe Premiere, and others. Uses PC CR/LF line breaks and has workaround for Premiere bug. See .SCC file above for the more standard variety. |
| .PC.NDF.SCC | + 29.97 fps Non-drop-frame timecode version of DVD captions for Sonic Scenarist, Adobe Premiere, and others. Uses PC CR/LF line breaks and has workaround for Premiere bug. See .NDF.SCC file above for the more standard variety. |
| .PC.24P.SCC | 23.976 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, Adobe Premiere, and others. Uses PC CR/LF line breaks and has workaround for Premiere bug. See .SCC file above for the more standard variety. |
| .PC.24.SCC | 24 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, Adobe Premiere, and others. Uses PC CR/LF line breaks and has workaround for Premiere bug. See .SCC file above for the more standard variety. |
| .PC.25.SCC | 25 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, Adobe Premiere, and others. Uses PC CR/LF line breaks and has workaround for Premiere bug. See .SCC file above for the more standard variety. Also called PAL output in Europe. |
| .PC.60P.SCC | 59.94 fps Drop-frame timecode version of DVD captions for Sonic Scenarist, Adobe Premiere, and others. Uses PC CR/LF line breaks and has workaround for Premiere bug. See .SCC file above for the more standard variety. |
Search Result Types |
|
| .XML | Pictron XML search data |
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