Closed Caption Format Support

verifycc iconDrastic professional level products support closed captions.  Video I/O products can capture and play back closed caption information.  MediaReactor can convert closed caption formats along with the video and audio files.  videoQC (Pro level and above) can decode and display both 608 and 708 captions for preview and confidence monitoring.  For some captions, default language/fonts can be set up, which are described here.

Supported Types

Here is the list of broadcast closed caption formats supported by Drastic products:

  • CEA-608
  • CEA-708
  • OP-47/RDD-08
  • Subtitles
  • MPEG-2 'user' CC (read)
  • h.264/MPEG-4/AVC1 'user' CC (read)
  • TS/MTS user and separate PID
  • MXF SMPTE 436M (read/write)
  • MXF Avid embedded CC (read)
  • GXF SMPTE 360 CC (read)
  • LXF Leitch/Harris CC (read)
  • MCC files side bar MacCaption/PC-Caption (read/write)
  • SCC files side bar MacCaption/PC-Caption (read/write)
  • MOV SD/HD CC tracks (read, and write with a special setup)
  • MP4 SD/HD CC tracks
  • AAF Data Track for Avid Editors (read/write)
  • N0 caption file for Grass Valley video servers (read/write)

Many subtitle caption formats are also supported for read and write:

  • Avid Caption - txt
  • Belle Nuit - stp
  • Comma Separated - csv
  • Digital Cinema 2007/2010 - xml
  • EBU Sub Titles - stl
  • Final Cut Pro - xml
  • Final Cut Pro X - xml
  • Flash - xml
  • iTunes Timed Text - txt
  • JSON (various) - json
  • QuickTime Text - txt
  • SAMI - smi
  • SMPTE 2052 - xml
  • SoftNI - sub
  • Sony DVD Architect - sub
  • Sony DVD - txt
  • SubRip - srt
  • Sub Station Alpha - ssa
  • Swift - sif
  • Timed Text - dxfp, ttml, xml
  • WebVVT - vvt
  • YouTube Annotations - xml
  • YouTube - sbv
  • YouTube Transcript - txt

Setting Defaults

Using the DDRConfig application, go to the Advanced tab and browse the XML tree to:

\VVW\Advanced\VGA\CCOP47DefaultCharacterSet

Depending on your default region, this should be set to one of the following to get the the correct fonts

  • 0 - Latin (English, French, German, Swedish, Finnish, Hungarian, Italian, Portuguese, Spanish, Czech, Slovak)
  • 1 - Latin (Polish)
  • 2 - Latin (Turkish)
  • 3 - Latin (Serbian, Croatian, Slovenian, Romanian)
  • 4 - Cyrillic (Serbian, Croatian, Russian, Bulgarian, Ukrainian) and Latin (Estonian, Latvian, Lithuanian)
  • 6 - Greek
  • 10 - Hebrew

Software Support

ccConvert

cc logo

ccConvert is a suite of tools for converting closed captions.  ccConvert supports capturing of 608 and 708 captions from live video, conversion between major closed caption types, and closed caption display and output to SDI. 

cc mainint

Drastic DDRs and MediaNXS 4K

medianxs logo approved

Drastic video I/O products will always capture side bar SCC (608 SD) or MCC (708 HD) text files if closed captioning is available.  SMPTE 436M is also captured, if recording a compatible MXF file type.  MOV closed caption track capture is also available, with a custom DDRConfig setup.

Video I/O products also support 608 and 708 insertion into the vertical blank area, if "Use Vertical Blank" is enabled.  MediaNXS 4K and DrasticDDR can read the MCC/SCC files, as well as MPEG-2 user closed caption (ATSC), Avid embedded, SMPTE 436 and MOV closed caption tracks.

These interfaces can also display the 608 or 708 captions to the VGA video preview area for confidence monitoring

MediaNXS-medium

MediaReactor Workstation

 mediareactor logo small

MediaReactor fully supports reading and writing the closed caption formats above.  All the supported formats are read when present.  SCC and MCC are always written, along with other formats when available.

mr editors2

videoQC/DrasticPreview Pro

dp logo 

videoQC (Pro and above) and DrasticPreview Pro support reading all the formats above, automatically.  These closed caption tracks are then decoded and can be displayed as a caption overlay on the VGA/DVI video signal.  This provides an incredibly cost effective closed caption monitor software.  With DrasticPreview Pro, the overlay can be displayed on the VGA/DVI image while the HD-SDI signal remains clean for viewing or measurement.

preview cc

More great products from Drastic

Advanced Time Code Setup
Advanced Time Code Setup Drastic products like DrasticDDR and MediaNXS support a wide variety of time code sources. The default selectable configurations will usually be the correct one... Tips, Tricks and Technical Information
Single/Dual Link Input Problems
Single/Dual Link Input Problems Connecting single and dual link inputs incorrectly can cause odd looking signals.  Here are each of the incorrect paths shown as they would be with a stand... Tips, Tricks and Technical Information
videoQC Network Stream Playback
videoQC Network Stream Playback videoQC software supports playing back a variety of network audio/video IP protocols including:  UDP, RTP, RTSP, SRT, NDI and SMPTE 2110/2022.  This d... Tips, Tricks and Technical Information
4KScope/HDRScope Multiple Inputs
4KScope/HDRScope Multiple Inputs 4KScope and HDRScope have the ability to use multiple inputs as individual inputs for some video capture boards (like AJA, Bluefish444 and some Blackmagic board... Tips, Tricks and Technical Information
Drastic Log Format
Drastic Log Format The Drastic LOG format uses the same basic layout as a LOG/~ALG/~ALE. The main differences are the 'Type:' header and the file name in the comment. The comment ... Tips, Tricks and Technical Information