Difference between revisions of "Eyesis4Pi 393 Downloading footage"
From ElphelWiki
| Line 22: | Line 22: | ||
'''result tree:''' | '''result tree:''' | ||
<font size='2' color='darkblue'>/data/footage/test1 | <font size='2' color='darkblue'>/data/footage/test1 | ||
| − | └── | + | └── Crucial_CT2050MX300SSD1_001-part2 <font color='black'>- each drive has a unique identifier, the script creates a corresponding directory for each drive and partition</font> |
├── file_2.img | ├── file_2.img | ||
├── file_3.img | ├── file_3.img | ||
| Line 32: | Line 32: | ||
5. Repeat steps 1.-4. for the next SSD (if PC fits only one). | 5. Repeat steps 1.-4. for the next SSD (if PC fits only one). | ||
'''Note: The 3rd subcamera SSD's footage is 6 times less than the 1st and the 2nd as it contains images from 2 sensors, others - from 12 each''' | '''Note: The 3rd subcamera SSD's footage is 6 times less than the 1st and the 2nd as it contains images from 2 sensors, others - from 12 each''' | ||
| + | |||
| + | After footage is downloaded from all SSDs the tree will look similar to the following: | ||
| + | <font size='2' color='darkblue'>/data/footage/test1 | ||
| + | ├── Crucial_CT2050MX300SSD1_001-part2 | ||
| + | │ ├── file_2.img | ||
| + | │ ├── file_3.img | ||
| + | │ └── file_4.img</font> | ||
| + | ├── Crucial_CT2050MX300SSD1_002-part2 | ||
| + | │ ├── file_2.img | ||
| + | │ ├── file_3.img | ||
| + | │ └── file_4.img</font> | ||
| + | └── Crucial_CT2050MX300SSD1_003-part2 | ||
| + | ├── file_2.img | ||
| + | ├── file_3.img | ||
| + | └── file_4.img</font> | ||
| + | |||
| + | ==Next step: split footage into images== | ||
| + | '''extract_images.php''' | ||
Revision as of 16:24, 22 April 2017
Install
git clone https://git.elphel.com/Elphel/elphel-tools-x393.git
Scripts
- ext_ssd_download.py - download footage from external SSD (connected to PC, camera off)
$./ext_ssd_download.py -h - print help
- int_ssd_download.py - download footage from Eyesis4Pi-393 internal SSD (camera's eSATA cables allow to download data from internal SSDs)
$./int_ssd_download.py -h - print help
Download footage example
1. Connect SSD to PC
2. Identify the device (using dmesg, for example). Example: /dev/sdc. The second partition contains footage = /dev/sdc2
3. cd to the dir
$ cd elphel-tools-x393
4. Download footage in 10GB chunks (the script has 20MB overlapping to prevent corrupted images in the preceding chunk)
- Download 30GB but skip the first 20GB (download range = 20-50GB on the SSD), to /data/footage/test1 on PC:
$./ext_ssd_download.py -p /dev/sdb2 -n 3 -s 2 /data/footage/test1 result tree: /data/footage/test1 └── Crucial_CT2050MX300SSD1_001-part2 - each drive has a unique identifier, the script creates a corresponding directory for each drive and partition ├── file_2.img ├── file_3.img └── file_4.img
- Download whole partition, to /data/footage/test1 on PC:
$./ext_ssd_download.py -p /dev/sdb2 /data/footage/test2
5. Repeat steps 1.-4. for the next SSD (if PC fits only one).
Note: The 3rd subcamera SSD's footage is 6 times less than the 1st and the 2nd as it contains images from 2 sensors, others - from 12 each
After footage is downloaded from all SSDs the tree will look similar to the following:
/data/footage/test1 ├── Crucial_CT2050MX300SSD1_001-part2 │ ├── file_2.img │ ├── file_3.img │ └── file_4.img ├── Crucial_CT2050MX300SSD1_002-part2 │ ├── file_2.img │ ├── file_3.img │ └── file_4.img</font> └── Crucial_CT2050MX300SSD1_003-part2 ├── file_2.img ├── file_3.img └── file_4.img</font>
Next step: split footage into images
extract_images.php
