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Overview

Switching Between Caption and Subtitle Modes

CaptionMaker 6.4 User Guide

Virtual Encoder and Generic Subtitles Default Devices

The default caption device Virtual Encoder and the default subtitle device Generic

Subtitles work well for a typical file-based workflow (which means, when hardware

devices are not used). Both of these devices are designed to emulate hardware

encoders. The Virtual Encoder and Generic Subtitles devices work for SD, HD, and

UHD resolutions. Generic Subtitles also provides more positioning options and user

selectable fonts.

When you need certain options you can also use devices for a file-based workflow that

have hardware names, and you do not need to have the actual hardware device

connected. Some of the available devices are only for SD resolution video, such as

Generic DVD. HD resolution, including 720p and 1080i/p, require devices such as

Blu-ray, or the default devices.

The following features are available with the Virtual Encoder caption device:

•

UHD (Ultra High Definition), HD (High Definition), and SD (Standard Definition).

•

2160i, 2160p, 1080i, 1080p, 720p, 480i (SD NTSC), 576i (SD PAL).

•

CEA-608 and CEA-708 captioning protocols.

•

Multiple frame rate support for 23.976 fps, 24 fps, 29.97 fps, 59.94 fps, 25 fps, 50 fps,

including drop frame and non-drop frame.

The following features are available with the Generic Subtitles device:

•

UHD (Ultra High Definition), HD (High Definition), and SD (Standard Definition).

•

2160i, 2160p, 1080i, 1080p, and 720p, 480i (SD NTSC), 576i (SD PAL).

•

Multiple frame rate support for 23.976 fps, 24 fps, 29.97 fps, 59.94 fps, 25 fps, 50 fps,

including drop frame and non-drop frame.

•

Provides the background opacity option.

•

Select from any font installed in your system.

•

Use multiple colors for font and background.

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Overview

What is 608 and 708 Closed Captioning?

CaptionMaker 6.4 User Guide

What is 608 and 708 Closed Captioning?

608

CEA-608 (formerly known as EIA-608) was the original closed captioning standard used

for analog TV broadcasts since 1980. This is also called "line 21" captions because they

are embedded in line 21 of analog TV signals.

608 captions are limited to a single block character font with gray mono-spaced text on

a black square background. Only the standard alphanumeric and certain accented

characters are supported. Due to bandwidth restrictions, it is uncommon to see more

than two languages encoded simultaneously.

Up-Converted from 608 to 708

608 captions that are up-converted to 708 do not take advantage of any of the new 708

caption features, such as multiple fonts and styles, multiple windows, Unicode

character support, or proper support for more than four languages.

708

CEA-708 (formerly known as EIA-708) is the new closed captioning standard used for all

DTV broadcasts, including both HD and SD. 708 supports a number of new features,

including:

1. 708 captions can appear in multiple fonts, sizes, colors, and styles:

2. 708 captions are drawn into "windows" which allows more creative and flexible

positioning of the captions, including use of the full 16x9 width of HD video.

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Overview

What is 608 and 708 Closed Captioning?

CaptionMaker 6.4 User Guide

3. 708 captions can contain up to 63 different captions tracks (although typically up to

6 are used simultaneously), without the bandwidth limitations of 608.

4. 708 captions also include a digital form of the 608 caption data for backwards

compatibility with older analog gear.

708 captions are required for all captioned DTV broadcasts, which includes both HD

and SD material. The DTV transition occurred on June 11, 2009. DTV broadcasts (with

very few exemptions) must now include both 708 and 608 captions.

When submitting a captioned SD tape to a broadcaster, the 708 captions are

automatically generated from the 608 data when the video is encoded for DTV.

However, when sending a pre-encoded file for broadcast (such as a MPEG-2 transport

stream), the file must contain both 708 and 608 data even if it is only SD, because it will

be transmitted as-is (not re-encoded by the broadcaster). HD tapes must always

contain both 708 and 608 captions as well.

Note: U.S. broadcast equipment does not support the full CEA-708 specification,

therefore, CaptionMaker only encodes simple CEA-708 that does not include any of

the advanced features. Unicode characters do not display properly.

Industry-Standard Caption Format Data

All existing industry-standard caption data formats, such as SCC files or CAP files, only

store CEA-608 caption data. However, CaptionMaker can import any industry standard

caption file format, and then up-convert the captions into CEA-708 caption data for

embedding into a video file or exporting into new formats that support CEA-708.

MacCaption developers have created a new file specification called MCC (MacCaption

Closed Caption file) which contains native CEA-708 encoded caption data.

CaptionMaker also supports the MCC file format. The MCC format is an open

specification and free for any hardware or software manufacturer to use. Please contact

Telestream for more information.

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Overview

Teletext in OP-47

CaptionMaker 6.4 User Guide

Teletext in OP-47

OP-47 (Operational Practice number 47) is a solution for inserting a Teletext ancillary

data channel into HD media. OP-47 was originally developed by Australian

broadcasters and is now widely used. The data can be stored in the SMPTE 436M track

of an MXF wrapper.

OP-47 Teletext stores data in selectable pages within magazines (1-8). These can be

selected by viewers using menu controls on their TV monitor. Typically, the subtitle

data can be stored in magazine 8 page 01, or Teletext 801. Other samples may have

Teletext 888, which is magazine 8 page 88. This is according to the SMPTE-RDD8

specification.

CaptionMaker can read and write OP-47 with a user selectable parameter that specifies

the magazine and page. Teletext information can have up to 40 characters per line of

text, including spaces.

Teletext supports Latin, Hebrew, Arabic, Greek, and Cyrillic alphabet. However, it does

not support Asian unicode characters such as Chinese and Japanese. CaptionMaker can

only insert Latin alphabet Characters into OP-47.

See OP-47 Teletext Workflows for more information on working with OP-47 Teletext

data in CaptionMaker.

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Overview

Live Captioning

CaptionMaker 6.4 User Guide

Live Captioning

For both live broadcast captioning and online (web) text streaming, you need a way to

input the text in real time. It is not possible to type text on the computer keyboard as

fast as people speak. There are two common practices—steno typing and speech

recognition software.

A professional real-time captioner can type more than 200 words per minute with over

99% accuracy using a steno machine. Due to their great skills, these professionals can

be expensive for a long term project. Speech recognition software is an alternative

solution—not as good as real-time captioning with a steno machine, but in some cases

it is acceptable.

Speech recognition software needs to be trained to recognize one person’s voice. This

can be the presenter, or a shadow speaker. A shadow speaker is also necessary when

there is more than one person speaking. See Transcribing a Video for more about

speech recognition software, and Shadow Speaker in the Glossary.

CC Encoder Hardware

For live broadcast TV encoding, you also need closed caption encoder hardware. They

range in price from $1,200 to $10,000 depending on whether the video is analog,

digital SD, or digital HD.

Overview

CaptionMaker Workspace

CaptionMaker 6.4 User Guide

CaptionMaker Workspace

The CaptionMaker workspace contains the following main sections.

•

Menus and Toolbars—To control toolbar display, choose View > Toolbars and Dock-

ing Windows. See the Menus chapter for details on menus and Toolbars for details

about the toolbars.

•

Video Playback and Caption Preview Panel—Play the video and preview the cap-

tion/subtitle timing, location, and formatting.

•

Editing Operation Controls—Buttons provide controls for most of the common

editing operations.

•

Text Panel—Provides timing and display parameters, text editing, and caption/sub-

title selection. To select the columns you want to display, choose View > Visible Col-

umns.

•

Status Bar—Provides information about some current settings and operations.

Main Toolbar

Video Playback and Caption Preview Panel

Text Panel

Status Bar

Operation Controls

Ancillary Toolbar

Overview

CaptionMaker Workspace

CaptionMaker 6.4 User Guide

Full Screen Text Panel

To have a large view of the text panel, select View > Full Screen Spreadsheet. Or, you

can click the

Full Screen Spreadsheet button on the Main toolbar.

Pop-Up Video Preview Window

To view the video preview panel in a separate window, select View > Pop-Up Preview

Window. You can place this window wherever you like, and adjust the size using the

Zoom menu.

Set Window Size

Overview

CaptionMaker Workspace

CaptionMaker 6.4 User Guide

Margin Indicator Frame

An optional white frame indicates where the margins are set for captions and subtitles.

To turn the display of this frame on or off, or to adjust the margins, see Set Caption

Margins and Set Subtitle Margins in the Menus chapter. The frame only displays when

captions or subtitles are present.

Black Text on White Background

You can switch to the CaptionMaker classic look of black text on white background for

the text panel. To change this, choose View > Black Text on White Background.

Prepari ng and Impor ting

Files

The topics in this chapter provide information on transcription, describe how to import

various types of files into CaptionMaker, and explain how to use a proxy movie.

■

Transcription

–

Transcription Mode

–

V-Pedal

–

Speech to Text Technology

–

Avoid Italics and Bold Text

–

Indicate Change in Person Speaking

–

Using Tab Delimited

–

Plain Text is the Preferred File Format

■

Import Caption or Subtitle Files

–

Types of Caption/Subtitle Files

–

Considerations When Importing Subtitles for Editing or Converting

–

Importing Files

–

Import Format Settings

–

Import Options for Free Form

■

Using Copy and Paste for Text

■

Opening a Movie

–

To Open or Replace a Movie

–

Video Playback Options

■

Importing Captions from a Video

–

QCC Multi-Format Import

■

Using a Proxy Movie

–

Use Episode to Make a Proxy Movie

–

Proxy Movie Settings

Preparing and Importing Files

Transcription

CaptionMaker 6.4 User Guide

Transcription

For non-live, prerecorded material, a transcript must be created of the dialog in the

video before the closed captioning process can begin. While listening to a video, a

typist can transcribe the video using any standard word processor.

Transcription Mode

Since CaptionMaker is designed primarily to format and timestamp the transcribed

text, the transcription process is usually done faster in a word processor, but can be

performed in CaptionMaker if the user prefers to.

If you want to do some transcribing within CaptionMaker, there is a Transcription Mode.

To enable/disable Transcription Mode, go to File > Transcription Mode. When enabled,

the cursor moves to the next caption cell when you press Enter. When this mode is

disabled, pressing Enter produces a carriage return within the same caption cell.

V-Pedal

The V-Pedal is a device that controls the playback of video and audio files on a

computer, using a foot pedal. This device is a time saver because it allows the

transcriber to easily pause and rewind the video without having to take their hands off

the keyboard. V-Pedal devices can connect via a USB port to either Mac or Windows.

The V-Pedal can also control video playback in CaptionMaker. CaptionMaker includes

the V-Pedal drivers.

For information about V-Pedal, go to: http://www.vpedal.com/

Speech to Text Technology

There are several ways that speech-to-text software can speed up the transcription

process. One option is a fully automated solution, such as Dragon Naturally Speaking

for Windows and Dragon Dictate for Mac, which is software that generates a transcript

from an audio file or spoken voice. The software can read the audio waveform and try

to match the sound to words in a dictionary. The results vary, and typically require the

user to proofread and correct mistakes.

Another option is to train the user’s voice to the speech-to-text software, and repeat

what is being said in the video. The result is a plain text document. This is a good

solution because it is very accurate. Punctuation will need to be corrected.

Recently, mobile phones have been equipped with speech-to-text technology that can

be used to create a transcript for captioning. Some users find it practical to simply

speak into their mobile phone while watching a video and create the transcript for

captioning. Consult with your device manufacturer for details.

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