Retrofitting CompactFlash Recording on the Camera

The declining price of CompactFlash storage components and sleek new product designs saw

the advent at this year’s NAB of several camera-mounted tapeless recording units not possible

even three years ago.

These new units are designed to work with a variety of tape- and disc-based cameras, such as

the shoulder-mounted Canon XL H1 and G1; JVC GY-HD250U; Panasonic AJ-2700 VariCam and

GP-US932; and Sony HVR-Z1U, F900 and XDCAM HD, and XDCAM EX. They’re also being used

for POV camera systems like the Iconix HR-1 and Panasonic’s GP-US932 CCD camera head.

They’re small (lightweight) and reliable, consume low power, and save considerable time during

production by allowing direct data file capture from today’s HD-SDI output. This ensures the

highest quality because you’re bypassing compression on tape and gets footage into the edit

system faster so you can begin working sooner. An added benefit for those with tape-based

cameras is that you can still record to videotape (if the camera has a tape drive) for backup.

One such product was the Flash Xstream Data Recorder (XDR) from Convergent Design, which

records HD-SDI 1080i/p and 720p video into a very high-quality MPEG-2 stream at bit rates up

to 100 Mbps 4:2:2 (long-GOP) and 160 Mbps 4:2:2 (I-frame) in full-raster (1920x1080).

Uncompressed 4-channel embedded or 2-channel analog audio is also captured with the video

into an MXF file stored on the Compact Flash cards. Additional processing options include

image flip, 24p pulldown removal, redundant recording (RAID1), time-lapse recording and

ASI I/O (as an optional firmware upgrade). Cost is $5,000.

A 32 GB CompactFlash card (about $150), coupled with the four card slots on Flash XDR,

enables up to 142 minutes of 100 Mbps recording time. In addition, the solid-state storage

cards are hot-swappable for continuous recording. After recording, the CF cards can be

loaded into multiple readers which can be daisy-chained together on a single FireWire 800

bus for download into an NLE at 3X to 6X real-time.

Another was Fast Forward Video’s Elite HD, a camera-mounted digital video recorder and

player that supports the JPEG 2000 (J2K) compression codec while recording HD-SDI video

signals as digital files. The Elite HD allows the direct recording of high-quality video from the

camera’s HD-SDI output. The Elite HD accepts an incoming HD-SDI video signal with up to

eight channels of embedded audio and records at data rates up to 100 Mbps with virtually no

loss in signal quality, according to the company. Video is stored to a 2.5-inch SATA drive,

which provides up to 10 times more storage than the camera’s recorder itself. Once data is

recorded, the compact unit can be detached from the camcorder and connected directly to

a nonlinear editing system via USB cable.

At NAB, JVC showed a prototype, camera-mounted, combination hard disk/solid-state media

recorder, the MR-HD200, which Secure Digital High Capacity (SDHC) solid-state memory cards.

The data writing speed of the (Class 6) SDHC cards is either 19.7Mbps (720p) or 25Mbps (1080i)

at 48 Mbps.

While the MR-HD200 is designed to attach permanently to JVC’s ProHD cameras, it features a

removable module that utilizes SDHC memory cards. A single 16GB SDHC memory card can

store 1.6 hours of HD in the 720p mode, and about 1.2 hours in the 1080i mode. JVC said that

with SDHC format, users get significantly more capacity at a cost per minute; one that’s similar

to Betacam SP videotape.

Serving as a hybrid recorder, the MR-HD200 also has a built-in hard disk drive for longer recording

times—up to 10 hours. Files are recorded in an editing-friendly native format (.MOV) so that post

production can begin without file conversion, transcoding or re-wrapping.

For more information, visit http://convergent-design.com, http://www.ffv.com

and http://www.jvc.com/prohd/.

Sid Rodrigue

Broadcast, Cable TV, and A/V Consultant
E-Mail: srodrigue@mpi-itec.com
Media Products of Atlanta, Inc.
1235 Old Alpharetta Road, Suite 130
Alpharetta , GA 30005
PHN:   770-772-4252, ext 18
FAX:   770-772-6583
CELL: 770-842-9927

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