Difference between revisions of "Multi camera system operation"
From ElphelWiki
(→raw partition write pointer position) |
|||
| (6 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
==Recording== | ==Recording== | ||
| − | Example for 2 cameras (2 X-Cams) - list comma-separated addresses in the GET line: | + | # 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 | 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) | * 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: | ||
| + | 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==== | ||
| + | # Power on | ||
| + | # Refresh multicam gui to get camogm started | ||
| + | # Record-button the recording will be started from the '''Current LBA''' (in /mnt/sda1/camogm.disk) | ||
| + | |||
| + | ====Start from the beginning of raw partition==== | ||
| + | # Power on | ||
| + | # Remove /mnt/sda1/camogm.disk on each camera (a new one is created by camogm on recording start) | ||
| + | # Refresh multicam gui to get camogm started | ||
| + | # 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== | ==Download footage== | ||
| Line 18: | Line 47: | ||
===scripts for downloading from internal SSD (via eSATA)=== | ===scripts for downloading from internal SSD (via eSATA)=== | ||
* Get [https://git.elphel.com/Elphel/elphel-tools-x393 int_ssd_download.py]: | * Get [https://git.elphel.com/Elphel/elphel-tools-x393 int_ssd_download.py]: | ||
| − | ~$ | + | ~$ 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 | # 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=== | ===scripts for extraction=== | ||
Latest revision as of 16:23, 3 August 2020
Contents
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
- Power on
- Refresh multicam gui to get camogm started
- Record-button the recording will be started from the Current LBA (in /mnt/sda1/camogm.disk)
Start from the beginning of raw partition
- Power on
- Remove /mnt/sda1/camogm.disk on each camera (a new one is created by camogm on recording start)
- Refresh multicam gui to get camogm started
- 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)
- Get int_ssd_download.py:
~$ 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
- Get split_mov_jp4.php. It takes channel shift as argv[1] when splitting. Example:
~$ 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
