Video

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Overview

Video from the Jason/Medea ROV includes both recordable and utilitarian streams. Utility cameras are used to aid vehicle and instrument operations and are generally not recorded.  There are three streams that are routinely recorded as normal operational procedure: PilotCam, BrowCam, and SciCam.

PilotCam, BrowCam, and SciCam cameras are the Insite MiniZeus, which produces 1080i 1920x1080x10 bit video at 29.97 fps.  All three are on pan and tilt mounts on Jason’s front face. PilotCam and SciCam are mid-height; BrowCam is high, on Jason’s light bar.

PilotCam and BrowCam are under the control of Jason crew and are used to create a 3D representation of the space in front of the vehicle to support manipulator operation.  SciCam is placed under science party control, typically the watch leader.  A pair of red lasers mounted on the pan and tilt platform in parallel with 10cm spacing provides a scale reference in SciCam’s video image.
 
Select moments from any of these HDTV cameras can be recorded as highlights by a hard disk recorder (currently Aja KiPro).  The recorded video files are compressed using the Apple ProRes422 family of codecs.  Each HDTV camera signal is also constantly recorded to h.264-encoded files, accompanied by subtitles of metadata.

Primary Video Streams - Four

Pilot's P/T, brow (light bar), science HDTV P/T, Medea down-looking
Displayed
Recorded (except for Medea) constantly to h.264 clips in Matroska container (.mkv)

Select moments recorded to ProRes422 file, one camera of SciCam, PilotCam, or BrowCam.
Distributed into ship
Framegrabbed (Virtual Van)

  Pilot’s Pan/Tilt Brow Camera Science Pan/Tilt Medea Color
Specs HDTV, HD-SDI
Color, 1080i Zoom, Pan/Tilt
HDTV, HD-SDI
Color, Zoom, Pan/Tilt
HDTV, HD-SDI
Color, Zoom, Pan/Tilt
10cm Laser Scalers
NTSC, Composite
Color, Zoom, Fixed
Camera 6.5kM Insite Mini-Zeus 6.5kM Insite Mini-Zeus 6.5kM Insite Mini-Zeus 6.5kM Wide Angle Pegasus
Location
View
Use
Jason
Center/Fwd
Pilot’s View
Jason
Light Bar/Fwd, Down
OverView
Jason
Port/Fwd
Science Operated P/T
Medea
Center/Downlook
Medea Overview of Jason
Displayed Yes Yes Yes Yes
h.264 Recorder
Yes
Continuously while on bottom
MPEG transport stream
Yes
Continuously while on bottom
MPEG transport stream
Yes
Continuously while on bottom
MPEG transport stream
No
Frame Grabbed
(Virtual Van)
Yes
Auto Interval
User I/P Events
1920x1080, jpg
Yes
Auto Interval
User I/P Events
1920x1080, jpg
Yes
Auto Interval
User I/P Events
1920x1080, jpg
Yes (Color)
Auto Interval
User I/P Events
1920x1080, jpg
HD Video Highlights
Yes Yes Yes No
HD Framegrabs
Yes Yes Yes No
Distributed Into Ship
Yes Yes Yes Yes (Color)
NDSF Archive Copy
(NDSF Archiving Policy)
h.264 encoded MPEG transport stream
Subtitle files
Audio time code
Voice narration, if performed
All merged into Matroska container file (.mkv)
h.264 encoded MPEG transport stream
Subtitle files
Audio time code
Voice narration, if performed
All merged into Matroska container file (.mkv)
h.264 encoded MPEG transport stream
Subtitle files
Audio time code
Voice narration, if performed
All merged into Matroska container file (.mkv)
(NA)
Science Copy
(Video Overlay)
h.264 encoded MPEG transport stream
Subtitle files
Audio time code
Voice narration, if performed
All merged into Matroska container file (.mkv)
h.264 encoded MPEG transport stream
Subtitle files
Audio time code
Voice narration, if performed
All merged into Matroska container file (.mkv)
h.264 encoded MPEG transport stream
Subtitle files
Audio time code
Voice narration, if performed
All merged into Matroska container file (.mkv)
(NA)

Secondary Video Streams - Multiple

Port/Stbd manipulator cameras, basket camera, BUTT camera
Pencil camera, DSC video, deck camera, winch camera, Medea termination
Displayed as required, not recorded, not distributed, not framegrabbed

  Port/Stbd Manip Center Cam Butt Cam Pencil Cam DSC Deck Cam Winch Cam Medea Termination
Specs NTSC
Color Composite Fixed
 NTSC
Color Composite Fixed
NTSC
Color Composite Fixed 
 NTSC
Color Composite Fixed
 NTSC
Color Composite Fixed
NTSC
Color Composite Fixed
NTSC
Color Composite Fixed 
NTSC
Color Composite Fixed 
Use  Monitor Manips Monitor Basket Aft Looking As Required Monitor
DSC Image Collection
Monitor Ship's Afterdeck Monitor Jason FO Winch Monitor
Medea Termination 
Displayed As Required As Required As Required As Required Yes Yes Yes As Required
Recorded  No  No No No  No  No  No  No
Frame Grabbed
No No  No  No   No Sometimes
(Launch Recovery) 
 No  No
Distributed Into Ship
No   No No  No   No  No No  N

Video Lighting (Jason)

Sixteen LED, including four 3-head units

Two 400 watt HMI (1 down/fwd, 1 aft)
Two 250 watt incandescent (1 fwd, 1 aft)

Video Distribution

All video is available for display within the Jason control vans via a video routing system.

Selected streams (typically from pilot's P/T, light bar cam, science P/T, Medea color, deckcam) can be run into the ship's video distribution system for ship-wide viewing.

Video Recording

MPEG transport stream
h.264 ecncoding
Three primary video streams recorded continuously when at depth:

• Pilot's pan/tilt: 1-chip, color, zoom, pan/tilt, ROV pilot's view (sample video)
• Light bar cam: 1-chip, color, zoom, fixed, fwd/down overview (sample video)
• Science pan/tilt: 3-chip, color, zoom, pan/tilt, science use, 10cm lasers (see sample image at left)

Audio Track Recording - Time Code, Audio Commentary

Audio Time Code: SMPTE standard audio time code disciplined by NTP from GPS/Master
Audio commentary: verbal commentary from a single source, push to talk microphone

NDSF archive copies: audio time code in right audio channel

Highlights Recording

One of the HDTV camera streams (Science, Pilot, or Brow) can be routed to a hard disk recorder. Highlights are captured under the control of a science party watchstander, who also records metadata (start/stop time, description of activity during the highlight).  SMPTE standard audio time code disciplined by GPS via NTP is recorded to both a dedicated time code and channel and to an audio channel.  If desired, the science party can perform voice narration to the other audio channel.

After the lowering the Jason data processor transfers highlight clips to hard drives, renaming them to include start and stop time in the file name.  A full set of the highlights is archived at WHOI/NDSF.  Another set is provided to the chief scientist on hard drives (exFAT filesystem) provided by the chief scientist.

Media

Data packages are provided on portable hard drive.

Typical filesystem format:  exFAT

Products

HDTV highlights in ProRes422LT Quicktime files

Constant HD recording of PilotCam, BrowCam, SciCam in h.264 Matroska files

Shipboard Real-Time Viewing

Video is distributed throughout the Jason control vans via a video routing system.  Anyone working in the control vans will have access to the display of all video as required.  Access to the vans is limited to those personnel on watch and any other personnel the Chief Scientist or watch leader designates as necessary.  Other personnel are invited into the control vans on a space available and need basis.

A remote station, normally set up in the ship's Main Lab, will have six-way split screen.

For personnel working elsewhere in the ship, the primary Jason/Medea video feeds can be run into the ship's video distribution system (Table 1 above).  Access and ease of viewing is dependent on the ship's video capabilities.  The Jason Group does not provide equipment for viewing video within the ship.  The science party must supply any additional monitors, cabling, etc., if there are additional requirements to view real time video beyond what the ship's video system is capable of providing.

Shipboard Post-Real-Time Processing

Post-real-time processing of the video, defined here as the ability to grab or digitize video clips, video editing, video compilation, etc. is primarily the responsibility of the science party depending on their specific needs.

Shipboard Duplication

The Jason Group provides a copy of all dive data to the Chief Scientist within a few hours.

The science party is responsible for carrying out all tasks involved in generating duplicate copies of science media. The science party must purchase and provide media required and provide/assign personnel to carry out the duplication.

User Provided System(s)

The science party is free to provide their own recording system to be used in addition to the standard recorders provided.  It cannot, however, be used instead of the standard recording systems.

The science party must supply ALL equipment, cables, and media for these systems.  Due to limited space available in the control vans, there is no guarantee that these systems can be accommodated within the vans.  In this case, video cables can be run to a ship laboratory for recording on these systems, but all cabling must be provided by the science party and all installation and operation carried out by the science party.

Jason personnel are not responsible for maintaining or servicing user-provided non-standard video systems in any way.  This includes real-time watchstanding for media change out, etc.  The science party must provide whatever additional personnel are needed to monitor these systems.

Investigators anticipating use of a non-standard system should contact Jason personnel to discuss needs and make necessary arrangements.

Post-Cruise Support

• NDSF Data Manager
• NDSF/archive copies - WHOI/NDSF Archives personnel, (508) 289-2865
• NDSF Archiving Policy
• Science party copies - contact the Chief Scientist