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Journal for accession number: 	0039430
Created on:                     2016-12-19
By:				Fred Katz, National Centers for Environmental Information

Source: These data were sent to NCEI by the NOAA Office of Exploration on 4
MiniDV tapes.


Action(s): Video data on each MiniDV tape was transferred into Apple Final Cut
Pro in a real time capture process. From Final Cut Pro, a high-resolution
preservation file was created in a dv wrapper format, and exported into 
the subdirectory data/0-data/Islands_The_Stream-2001/. Each dv file was 
identified by the .dv file format extension.


The dv files were then transcoded with the ffmpeg command line utility to
create low-resolution access files in the Apple QuickTime wrapper format, 
which were copied into data/1-data/Cruise_ID-year/. Each QuickTime file was
identified by the .mov file format extension.


Files: 
about/ 
This directory contains files generated by NCEI with ancillary information about
the data submission.

0039430_lonlat.txt -
  Contains the geographical position of the center of the area where these 
  data were collected (longitude in the left column and latitude in the 
  right column, both in degrees).

0039430_map.jpg - 
  Sample location map for the geographical position of the center of the
  area where these data were collected. 

data/0-data/Islands_in_the_Stream-2001
This directory contains the high resolution videos which were transferred to video files
format from the originally submitted MiniDV tapes. All these files are encoded with the
dv video codec, however two different container formats were used, depending on the version
of Final Cut Pro used at the time to make the transfers.  The two older files, with the
 .dv file extension, were wrapped in a dv container format. The two newer files, with 
the .mov file extension, were wrapped in the Quicktime container format. 

  Clelia-622-1_3CHIP.dv
  Clelia-622-1_SIT.mov
  Clelia-622-2_3CHIP.dv
  Clelia-622-3_3CHIP.mov


These files use the following  naming convention:
vehicleID-diveNumber-tapeSetNumber_cameraType.dv 

where tapeSetNumber notates that multiple cameras captured the same temporal
sequence, and where cameraType notates the specific camera used, 
  3CHIP indicating a 3-CCD camera 
  Weaver indicating a hand-held camera operated by PI Doug Weaver from Clelia's interior


data/1-data/Sebastian-2001
This directory contains the low resolution video files which were transcoded by
NCEI to the QuickTime format from the NCEI-created dv-encoded files.

  IslandsInTheStream2001_Dive622_Tape01-1_3CHIP_low.mov
  IslandsInTheStream2001_Dive622_Tape02-1_SIT_low.mov
  IslandsInTheStream2001_Dive622_Tape03-2_3CHIP_low.mov
  IslandsInTheStream2001_Dive622_Tape04-3_3CHIP_low.mov


Unlike the high-res video files in 0-data/, these transcoded files use an
alternate naming convention for physical media that is consistent with other,
later video data from the same data provider: 

  CruiseID_DiveID_TapeID-tapeSetNumber_cameraType_low.mov

In this archival information package, the following mapping indicates which dv
file directly corresponds to an equivalent QuickTime file. Note that:
 Tapes 01 and 02 comprise Tape Set 1
 Tapes 02 alone comprises Tape Set 2
 Tapes 03 alone comprises Tape Set 3

  0-data/Sebastian-2001/Clelia-622-1_3CHIP.dv =
  1-data/Sebastian-2001/IslandsInTheStream2001_Dive622_Tape01-1_3CHIP_low.mov

  0-data/Sebastian-2001/Clelia-622-1_SIT.mov =
  1-data/Sebastian-2001/IslandsInTheStream2001_Dive622_Tape02-1_SIT_low.mov

  0-data/Sebastian-2001/Clelia-622-2_3CHIP.dv =
  1-data/Sebastian-2001/ IslandsInTheStream2001_Dive622_Tape03-2_3CHIP_low.mov

  0-data/Sebastian-2001/CClelia-622-3_3CHIP.mov =
  1-data/Sebastian-2001/IslandsInTheStream2001_Dive622_Tape04-3_3CHIP_low.mov