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NLE
Hardware
CPC software running on
both Windows and Macintosh platforms can add captions directly to video
using NLE systems. After adding captions to a 720x486 video with an NLE
system, you typically write the final video to a videotape using the
hardware (not firewire) associated with your NLE system.
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Caption
data sits in 720x486 video in Row 0, 1 or 2 depending on the NLE
system. In NTSC (525 line) video caption data sits in Line 21. When
you transfer the 720x486 video to NTSC, you must use an NLE
system which can map the caption data from Row 0, 1 or 2 of
720x486 video to NTSC video Line 21. For example, for Avid
systems, the caption data sits on Row 1 and column 26.
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Click
here to see a sample
720x486 black video with caption data near the top. The
caption data looks like tiny dashes. |
CPC
software can export a 720x486 black video with closed caption data on row 0,
1 or 2 as shown below.

The
720x486 video file is then imported into the NLE system and put on the
time line exactly like other video material. A crop or picture-in-picture
effect is
then applied to the imported video to mask off all but the closed
caption image lines to merge the imported video with the original video.
The resulting video output from the NLE system is closed captioned.
Using this method, no additional closed caption encoder is needed to
produce closed captioned video.
The
following NLE systems are caption compatible. Caption data for use with
NLE systems is stored in the following locations:
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NLE
Systems
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Primary
Row
|
Starting
Column
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AJA
Io LA *
|
1
|
24
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AJA
KONA *
|
2
|
24
|
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AJA
KONA (alternate) *
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1
|
24
|
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AJA
KONA LH/Lhe, LS/LSe *
|
2
|
24
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AJA
KONA LH/Lhe, LS/LSe (alternate)*
|
1
|
24
|
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Avid
ABVB
|
0
|
35
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Avid
ABVB
(alternate)
|
480
|
35
|
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Avid
Adrenaline
|
0
|
22
|
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Avid
Adrenaline (alternate)
|
1
|
35
|
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Avid
DS Equinox
|
1
|
26
|
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Avid
Express Pro
|
1
|
26
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Avid
Meridien
|
1
|
26
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Blackmagic
DeckLink
#
|
1
|
26
|
| Blackmagic
DeckLink (alternate)
* |
2 |
26 |
|
Leitch
DPS Velocity
|
1
|
26
|
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Matrox
DigiSuite#
|
1
|
30
|
|
Media
100
|
1
|
26
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NewTek
Video Toaster 3 & 4
#
|
1
|
19
|
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Sony
XPRI
|
1
|
26
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TARGA
1000-3000
|
1
|
26
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* Works
with Mac Final Cut Pro
# Works with Windows Adobe Premier
Notes:
1. Blackmagic DeckLink can be used with Final Cut Pro and Adobe
Premiere. Drivers for Decklink card smay be found at: www.blackmagic-design.com/support/software
2. The
KONA drivers that support closed captioning can be downloaded from
www.aja.com/support_kona.html
2. Matrox
DigiSuite hardware works with the following NLE systems
3.
The following Pinnacle
hardware used by many Windows NLE systems are caption compatible.
-
TARGA
1000 PRO
-
TARGA
2000 RTX
-
TARGA
2000 DTX
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TARGA
2000 PRO
-
TARGA
2000 SDX
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TARGA
3000
Compatibility Check 1
There may be other NLE hardware
devices which work with CPC CaptionMaker and MacCaption
software. To check whether the CPC software works with your specific
hardware, you can do the following test.
Take
a commercial video with closed captions and save it uncompressed via
your video input/output device (not Firewire) on your hard drive.
Now send the uncompressed video out of your computer to a TV with its
closed caption decoder turned on. If you see captions, your hardware is
most likely compatible.
Compatibility Check 2
You can download one of the two sample NLE 720x486 black videos
containing closed captions which were created with CPC software:
MOV
files for a number of NLE systems: NLE_MOV_Exports.zip
AVI files for a number of NLE systems: NLE_AVI_Exports.zip
Chose
either the mov or the avi zip file, unzip it and choose the appropriate
mov or avi file for your system. Open
the video in your NLE software and output the video via your video
input/output device (not Firewire) to your video deck. For
details, click here. To see the
captions, you would need a TV with its closed caption decoder turned on. If
you see captions, your NLE hardware is compatible.
If
your NLE system is not listed above
We created a tool to determine
the preset values for your NLE system if it is not listed
in the table above.
Please
click here for
instructions on how to find the correct settings for your NLE system.
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