Video Subsystem

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Contents

Main Goals

  • All hardware shall fit in 6" diameter airframe
  • Provide a state of the art compression and storage technology for high-bandwidth video recording.
  • Utilize G-impervious solid state recording media to eliminate any possibility of flight failure.
  • Capture HD video from multiple cameras/views to onboard solid state memory.
  • Stream SD video from a single camera/view live to the base-station and multiple wireless receivers.
  • Be able to produce stunning Bluray/HD quality video from multiple camera sources
  • Provide overlaid trajectory information and video/graphics mixing of Google-Earth rendering of telemetry data.
  • Provide a state of the art compression and storage technology for high-bandwidth video recording.

Camera Requirements

  • 360 degree field of view feature with enable/disable
  • Active Image stabilization feature with enable/disable
  • 1920x1080 progressive resolution
  • Up to 30fps mandatory, 120fps and more desirable for 4X realtime operation
  • Carl Zeiss Vario Tessar 10x lens
  • Exmor CMOS sensor with ClearVid pixel layout
  • Realtime control of image enhancement features, zoom

Video Encoder

  • H.264/AVC (MPEG-4/AVC) encoder
  • Support Profile/Level up to 4.2 (1920x1080@60)
  • Main profile for Wireless transmission: L3/L3.1 (720x480@30, 1-4Mbps, 720x480@80, 4-8Mbps) - NTSC - subject to quality evaluation
  • Main profile for Onboard recording: L4.1/4.2 (1920x1080@30/60, 6-16Mbps/8-20Mbps) - HD 1080p - subject to quality evaluation
  • Support IDR (Internal decoder refresh) on the fly (IDR OTF) for realtime encoder feature
  • Support Context Adaptive Binary Arithmetic Coding (CABAC) feature
  • Realtime control of start/stop/IDR-insert

Audio Encoder

  • AAC-LC Audio encoder
  • 48K sample rate (PCM S16_LE)
  • 2-Channel (Stereo)
  • Support up to 320Kbps - subject to quality evaluation
  • Realtime control of mute, volume, decibel/gain-adjustment

Live Transport

  • Realtime control of start/stop/idr-insert
  • Support H.264 RTP Encapsulation and Transmission via RFC3016
  • Support concurrent recording of Audio/Video ES or MP4 file - magic-gate or solid-state drive
  • Support H.264 video streaming compliant with VideoLAN Client (VLC) (RFC3016)
  • Support transmission over IEEE 802.3 Ethernet (10/100/1000Mbps)

Onboard Recording

  • Support AVCHD (MPEG2-TS) recording up to 16Mbps (L4.1), would like 20Mbps (4.2)
  • Support recording to Magic Gate Duo (16GB) devices

Hardware Components

  • Sony Bloggie (4)
  • Sony SNT-EX101 Video Network Station - Realtime NTSC Encoder (1 or 2)
  • Sony HXR-MC1/ACC HXRMC1/ACC Digital HD POV Camera Recorder with Accessory Kit (4)
  • Sony NP-FH100 Extended duration Battery option for HXR-MC1 (4)
  • Sony IMZNS116 IMZNS116 Intelligent Monitoring Software (RealShot Manager Advanced) for 16 Cameras (1)
  • Sony SNCCH140 SNCCH140 Network HD Fixed Camera with View-DR Technology (1)
  • Sony SSCDC374 SSCDC374 Fixed Color Camera with 480 TVL (1 or 2, equal in number of SNT-EX101)

Onboard Components Block Diagram

Block diagram for onboard video components.

Ground/Launch site setup

Video setup for ground-based work and launch site.

Camera Placement

  • Analysis shall be done to determine the best field of view (FOV)
  • The Bloggie cameras could be put in the nose for view of the horizon
  • The SD realtime encoders will not stream beyond a few miles, so they should be placed opposing each other in the booster
  • The HD recorder could be placed in the sustainer airframe or nosecone
  • Multiple HD recorders could be employed for 360 degree FOV 4Kx4K HD content

Component Dimensions

  • Sony SNT-EX101 (WxHxD) 2 7/8 x 1 3/8 x 6 1/8 (WxHxD)
  • Sony HXR-MC1 Control unit: 3 1/4 x 4 1/4 x 1 11/16 inches (81 x 107 x 42 mm) (WxHxD)
  • Sony HXR-MC1 Camera head: 1 1/2 x 1 11/16 x 3 1/2 inches (37 x 42.5 x 86.5 mm) (WxHxD)
  • Sony HXR-MC1 Cable length: 110 inches (2.8 m) between control unit and camera head (cable is not detachable)
  • Sony SNCCH1402 7/8 x 2 1/2 x 5 3/4 inches (72 x 63 x 145 mm) (WxHxD)
  • Sony SSCDC374 2 3/8 x 2 1/4 x 4 3/4 inches (60 x 54 x 120 mm) (WxHxD)
  • Sony Bloggie - TBD
  • Sony VAIO - TBD

Open Issues

  • SD/HD Camera Field of view (FOV) & placement analysis
  • SD Camera placement - an SD camera on either side of the payload section or booster would be optimal
  • HD Camera placement - the ultimate would be 4 x 1920x1080p recordings from each 90 degree FOV quandrant (assuming placement within the sustainer airframe); this would allow for a full 360 degree view of the flight and provide for 4K content which has real commercial value as only now are displays of this resolution becoming available (CES 2010 demonstrated many of these)
  • Sony SNT-EX101 may need to be taken out of the case (it is 6 1/8" and may barely fit)
  • Operating temperature of the payload bay
  • Streaming tests need to be done with SNT-EX101/SSDC374 and the SNCCH1402 to find optimal bitrates and settings
  • Range tests need to be performed with WiMax radio
  • HXR-MC1 ground testing with a car-race would be good for testing camera performance in presence of shock/vibration
  • Need VAIO model for dimensions
  • Need Bloggie dimensions

External References

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