Eyesis4Pi 393 Downloading footage
From ElphelWiki
Contents
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 - for 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 - for help
- extract_images.php - split downloaded footage into individual pictures.
$./extract_images.php -h - for help
- eyesis4pi393/footage_filter.php - filter out incomplete panorama sets from the footage directory
$ eyesis4pi393/footage_filter.php -h - for help
Step 1: 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 smaller 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 └── Crucial_CT2050MX300SSD1_003-part2 ├── file_2.img ├── file_3.img └── file_4.img
Step 2: Split footage into pictures
- extract_images.php:
$./extract_images.php dest_path=/data/footage/test1
Step 3: Filter
- eyesis4pi393/footage_filter.php
$ eyesis4pi393/footage_filter.php path=/data/footage/test1/0 trash_path=/data/footage/test1/trash
