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everything remotely possible Effective Use of Digital Video for Subsea IRM
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Effective Use of
Digital Video for Subsea IRM
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Bill Parker-Jervis
VisualSoft Technical Manager
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Use of Digital Video
Digital Video offshore is not new...
…and VisualSoft is not new
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• 12 years
• Well over 1000 licenses
• Well over 100 companies
• Over 30 countries
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SD Video Standards
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Picture Resolution and Frame Rate
PAL 704 x 576 25 frames per second
NTSC 640 x 480 30 frames per second
Analogue standards, not digital, but a useful shorthand.
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Bitrates and Quality
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More data means better quality:
High bitrates generally mean better quality video…
…Low bitrates mean more compression so lower quality
No exact comparison because CODEC efficiencies differ.
WMV Most commonly being used at 4 Mbps
MPEG-2 Most commonly being used at 6 Mbps
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Video Resolutions
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PAL: 704 x 576
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Video Resolutions
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PAL: 704 x 576
HD 720: 1280 x 720
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Video Resolutions
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PAL: 704 x 576
HD 720: 1280 x 720
HD 1080: 1920 x 1080
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Resolutions, Bitrates & CODECs
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PAL: 704 x 576
HD 720: 1280 x 720
HD 1080: 1920 x 1080
Has usually been encoded as
WMV or MPEG-2, at 4 to 6 megabits per second
With H.264, we can use 5 megabits per second
With H.264 we can use
10 megabits per second, and possibly even lower
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Video Stills from Full HD 1080p
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Video Stills from Full HD 1080p
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Video Stills from Full HD 1080p
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Looking further ahead…
3D: More questions than answers?
• How many cameras?
• How are we going to watch it?
• Do we also need 2D recordings?
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Looking further ahead…
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• Increasing use of AUVs for pipeline survey
• Increasing use of video streaming to shore
• Increasing use of video streaming on ships
All of these indicate a need for ever better video
compression.
For now we have H.264, soon we’ll have H.265,
and no doubt more to follow.
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Camera views
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More and better data
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Overlay, online and offline
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Subsea 2013
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Data structure and access
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QC
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Pipeline History
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Year 1
Year 1
Year 2
Year 2
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Structure History
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ArcGIS plus VisualGIS
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Effective Use of
Digital Video for Subsea IRM
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“Effective Use” requires flexibility:
What is effective for one task may not be effective
for another.
• Multiple formats (WMV, MPG-2, H.264)
• Multiple resolutions (PAL SD, HD 720, HD 1080)
• Multiple bitrates and qualities
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Effective Use of
Digital Video for Subsea IRM
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“Flexibility” should not mean “Complexity”:
Changes and improvements should not cause
undue confusion and complexity.
• Configuration should be guided and “educated”
• If things can be automated they should be
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Effective Use of
Digital Video for Subsea IRM
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Flexibility requires cooperation – we can’t exist in
isolation, even if sometimes we’d like to.
Application Programming Interface (API)
• Open API commands to stop or start recording
• Open API commands for file names and locations
• Open API command for still images & video clips
• Open API commands for playback control
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Effective Use of
Digital Video for Subsea IRM
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“Effective Use” requires:
Flexible methods
Flexible configurations
Flexibility without complexity
Flexibility through cooperation
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VisualSoft Suite
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