Difference between revisions of "Multi camera system operation"

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(scripts for downloading from internal SSD (via eSATA))
 
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* record button - starts recording on raw paritions (camera internal)
 
* record button - starts recording on raw paritions (camera internal)
 
* snapshot button - saves a zip archive to host pc
 
* snapshot button - saves a zip archive to host pc
 +
 +
==Recording manual LWIR+XCAM==
 +
LWIR camera:
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  1. http://192.168.0.36/camogmgui.php
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  2. Format-tab, select mov, enter /mnt/sda1/, click OK
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  3. click recording
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XCam
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  1. http://192.168.0.38/camogmgui.php
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  2. (optinal?) select fast recording, click OK
 +
  3. click recording
  
 
===Howto===
 
===Howto===

Latest revision as of 17:23, 3 August 2020

Recording

# Example for 2 cameras (2 X-Cams) - list comma-separated addresses in the GET line:
http://192.168.0.39/multicam/?ip=192.168.0.39,192.168.0.38
# LWIR + XCAM
http://192.168.0.36/multicam/?ip=192.168.0.36,192.168.0.38
  • tests button to get some diagnostics
  • record button - starts recording on raw paritions (camera internal)
  • snapshot button - saves a zip archive to host pc

Recording manual LWIR+XCAM

LWIR camera: 
  1. http://192.168.0.36/camogmgui.php
  2. Format-tab, select mov, enter /mnt/sda1/, click OK
  3. click recording
XCam
  1. http://192.168.0.38/camogmgui.php
  2. (optinal?) select fast recording, click OK
  3. click recording

Howto

Basic

  1. Power on
  2. Refresh multicam gui to get camogm started
  3. Record-button the recording will be started from the Current LBA (in /mnt/sda1/camogm.disk)

Start from the beginning of raw partition

  1. Power on
  2. Remove /mnt/sda1/camogm.disk on each camera (a new one is created by camogm on recording start)
  3. Refresh multicam gui to get camogm started
  4. Record-button

Note: Steps 2 and 3 can be swapped. Camogms will recreate camogm.disks on recording start. The free space in the multicam gui will also update to correct value on recording start.


Download footage

  • /dev/sda1 - ext4
  • /dev/sda2 - raw

raw partition write pointer position

root@elphel393:~# cat /mnt/sda1/camogm.disk    
Device          Start LBA       Current LBA     End LBA 
/dev/sda2       12500992        38196200        250068992

How much is written:

(Current - Start)*512/2^30 GB

scripts for downloading from internal SSD (via eSATA)

~$ ssh-copy-id root@192.168.0.39
~$ ssh-copy-id root@192.168.0.38
~$ python2 int_ssd_download.py -h
# Download 100GB from each
~$ python2 int_ssd_download.py -c root@192.168.0.39 -n 10 /path
~$ python2 int_ssd_download.py -c root@192.168.0.38 -n 10 /path

This script:

  • creates a UID (/path/UID) directory, where UID - ID of the SSD
  • switched the SSD to eSATA port

Note: Essentially the script does dd. If there is no eSATA cable it's possible to run dd over network. Something like:

ssh root@192.168.0.39 "dd if=/dev/sda2 bs=20M count=10 | gzip -1 -" | dd of=image.bin.gz

scripts for extraction

~$ cd /path/UID-of-192.168.0.39
~$ /path-to-script/split_mov_jp4.php 0
~$ cd /path/UID-of-192.168.0.38
~$ /path-to-script/split_mov_jp4.php 4